condair DA Series Desiccant Dryer Instruction Manual
- June 15, 2024
- condair
Table of Contents
DA Series Desiccant Dryer
Product Information
Specifications
- Model: Condair DA-Series
- Dehumidification
Product Description
The Condair DA Series Desiccant Dryer is a high-quality
dehumidifier designed to efficiently remove moisture from the air.
It is suitable for various applications and offers reliable
performance.
Installation and Planning
Location Requirements
Before installing the unit, ensure that the location meets the
following requirements:
-
Clearance Requirements: Provide sufficient space around the
unit for proper airflow and maintenance access. -
Site Requirements: The site should be clean, well-ventilated,
and free from excessive heat or corrosive gases. -
Air Supply Requirements: Ensure proper air supply to the unit
for effective dehumidification. -
Power Supply Requirements: Connect the unit to a stable power
source according to the specified electrical requirements.
Installation
To install the Condair DA Series Desiccant Dryer, follow these
steps:
-
Choose the appropriate installation location based on the
location requirements. -
Mount the dehumidifier securely using the provided mounting
hardware. -
Connect the process air duct inlet, reactivation air duct
inlet, and wet air duct outlet to their respective connections on
the unit. -
Install the electrical connections according to the provided
checklist.
User Interface
The Condair DA Series Desiccant Dryer features a user-friendly
control software interface. The user interface provides access to
various settings and information related to the unit’s
operation.
Control Software
The control software allows you to navigate through different
pages and configure the unit’s operation. The main pages
include:
-
Main Page: Provides an overview of the unit’s status and key
information. -
Operation Page: Allows you to start and stop the unit, adjust
settings, and monitor performance. -
I/O Input Outputs Page: Displays the input and output signals
of the unit. -
Menu Page: Provides access to additional settings and
options. -
Runtime Alarms Page: Displays any active alarms and allows you
to reset them. -
Service Level Settings Page: Allows you to configure the
service level of the unit. -
Communication Settings Page: Provides options for communication
settings.
Operation
Starting Up
To start the Condair DA Series Desiccant Dryer, follow these
steps:
-
Ensure that the unit is properly installed and connected to the
power supply. -
Access the control software interface.
-
On the Operation Page, select the desired operating mode and
adjust the settings as needed. -
Press the Start button to initiate the dehumidification
process.
Shutting Down the Unit
To shut down the Condair DA Series Desiccant Dryer, follow these
steps:
-
Access the control software interface.
-
On the Operation Page, press the Stop button to stop the
dehumidification process. -
Ensure that all power supply connections are safe to
disconnect.
Maintenance
General
Regular maintenance is essential to ensure the optimal
performance and longevity of the Condair DA Series Desiccant Dryer.
Follow the maintenance guidelines below:
-
Perform routine inspections and cleaning of the unit.
-
Refer to the Maintenance List for specific maintenance tasks
and schedules. -
Reset the service reminder after completing maintenance
tasks.
Troubleshooting
If you encounter any issues with the Condair DA Series Desiccant
Dryer, refer to the Troubleshooting section of the manual for
general troubleshooting steps and solutions.
FAQ
-
1. **Q: How often should I perform maintenance on theunit?**
A: Regular maintenance should be performed according to the
provided Maintenance List. This ensures optimal performance and
prevents potential issues.
-
1. **Q: Can I install the unit in a room with hightemperatures?**
A: It is recommended to install the unit in a location free from
excessive heat or corrosive gases to prevent damage and ensure
proper operation.
-
1. **Q: How do I reset an alarm on the controlsoftware?**
A: Access the Runtime Alarms Page on the control software
interface and select the alarm you want to reset. Follow the
instructions provided to reset the alarm.
2597586_C_EN_2311_DA_IOM
IMPORTANT! Read and save these instructions. This manual to be left with the
equipment.
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Condair DA Series Desiccant Dryer Condair DA-Series
Dehumidification
Thank you for choosing Condair
Installation date (MM/DD/YYYY): Commissioning date (MM/DD/YYYY): Site: Model:
Serial number:
Proprietary Notice This document and the information disclosed herein are
proprietary data of Condair Ltd. Neither this document, nor the information
contained herein shall be reproduced, used, or disclosed to others without the
written authorization of Condair Ltd., except to the extent required for
installation, operation or maintenance of customer’s equipment. Liability
Notice Condair Ltd. does not accept any liability due to incorrect
installation , operation or operation of the equipment or due to the use of
parts/components/equipment that are not authorized by Condair Ltd. Copyright
Notice © 2022, Condair Ltd., All rights reserved. Technical modifications
reserved
Contents
1
1.1 1.2 1.2.1 1.2.2 1.2.3 1.3 1.3.1 1.3.2 1.4 1.5
2
3
3.1 3.2 3.3
4 4.1 4.2
5
6
6.1 6.1.1 6.2 6.3 6.4 6.4.1 6.4.2 6.5 6.5.1 6.5.2 6.5.3 6.5.4 6.5.5 6.5.6
6.5.7 6.5.8 6.5.9 6.5.9.1 6.5.10 6.5.11 6.5.12
Introduction
Getting Started General
Limitations of the Manual Symbols Used in This Manual Storage of Manual
Receiving and Storage Inspection Storage, Packaging, and Transportation Safety
Precautions Compliance
For your Safety
Product Description
General Description Model Designation Functional Description
Product Specifications Technical Specification Control Signal
Specification Drawings
Installation and Planning
General Installation Overview
Location Requirements Clearance Requirements Site Requirements
Air Supply Requirements Power Supply Requirements Installation Installing the
unit in the room to be dried Installing the unit in a separate room Dampers
and Air Balancing Schematic Safety Mounting the Dehumidifier Connecting the
Process Air Duct Inlet Connecting the Reactivation Air Duct Inlet Connecting
the Wet Air Duct Outlet Installing the Electrical Connections
Electrical Connections Checklist Installation Work External Controls
Connections Connection of External Controls for Process Air EC Fan Connection
of External Controls for Regeneration Air EC Fan
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6 6 6 6 6 7 7 7 7 8 8
9
12 12 13 13
16 16 16
17 18 18 19 19 20 20 20 20 21 21 21 23 24 24 24 25 25 26 26 27 29 30
Contents 3
7
7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.5.1 7.1.5.2 7.1.5.3 7.1.5.4
User Interface
Control Software Navigation Elements Main Page Operation Page I/O Input
Outputs Page Menu Page Runtime Alarms Service Level Settings Communication
Settings
8
Operation
8.1
General
8.2
Starting Up
8.3
Shutting Down the Unit
8.4
Configuring the Control Software
8.5
Resetting Alarms
9
Maintenance
9.1
General
9.2
Maintenance List
9.3
Resetting the Service Reminder
10
Troubleshooting
10.1
General Troubleshooting
11
Condair DA Spare Parts List
11.1
Obtaining Spare Parts
12
Commissioning
12.1
General
12.2
First-time Commissioning
13
Decommissioning
13.1
General
13.2
Removing Unit from Service
13.3
Disposing or Recycling the Unit
14
Appendix A
14.1
Appendix A-1: Installation Checklist
14.2
Appendix A-2: Maintenance Checklist
14.3
Appendix A-3: Wiring Diagrams
14.4 14.4.1 14.4.1.1 14.4.2 14.4.3 14.4.4 14.4.4.1 14.4.4.2 14.4.4.3
Appendix A-4: Communication Modbus RS485 Connection TCP/IP Network Settings Modbus Datapoints BACnet Network Settings Configure the Gateway Changing IP Addresses/ Troubleshooting
4 Contents
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32 32 32 33 33 34 34 35 36 39 40
41 41 42 43 43 43
44 44 44 45
46 46
49 54
55 55 55
57 57 57 57
58 58 59 60 64 64 64 65 66 67 67 68 69
Condair DA
15
Appendix B: Additional instructions pre- and post-cooling modules
72
15.1
Before you begin
72
15.2
Notes on the additional instructions
72
15.2.1
Limitation
72
15.2.2
For your safety
72
15.3
Receiving and Storage
73
15.3.1
Inspection
73
15.3.2
Storage and transportation
73
15.4
Product Overview
74
15.4.1
General description
74
15.4.2
Functional description
74
15.4.2.1
Pre-cooling module
74
15.4.2.2
Post-cooling module
74
15.4.3
Product specifications
76
15.4.3.1
Pre-cooling module
76
15.4.3.2
Post-cooling module
77
15.5
Installation
78
15.5.1
Location requirements
78
15.6
Installation procedure
78
15.7
Commissioning
81
15.8
Operation
81
15.9
Maintenance
82
15.9.1
Important notes on maintenance
82
15.9.2
Maintenance list
82
15.9.3
Freeze Protection
83
15.9.3.1
Blowing-out coils
83
15.9.3.2
Flushing coils
84
16
Appendix C: Additional instructions for the installation of Condair supplied transformers 86
16.1
Before you begin
86
16.2
Notes on the additional instructions
86
16.2.1
Limitation
86
16.2.2
General
86
16.2.3
Qualification of personnel
86
16.2.4
Intended use of transformers
86
16.3
Receiving, Storage and Ventilation
87
16.3.1
Receiving & Inspection
87
16.3.2
Storage
87
16.3.3
Ventilation
87
16.4
Product Overview
88
16.4.1
General description
88
16.4.2
Functional description
88
16.4.3
Transformer Sound Levels
88
16.5
Technical Specification
89
16.5.1
Transformer technical specification
89
16.5.2
Ampacity Rating for Transformer Wiring
90
16.6
Installation
91
16.6.1
Installation requirements
91
16.6.2
Installation procedure
91
16.6.3
Sample Installation
92
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Contents 5
1 Introduction
1.1 Getting Started
Thank you for purchasing the Condair DA Series Desiccant Dryer. The Condair DA
Series Desiccant Dryer incorporates the latest technical advances and meets
recognized safety standards. Improper use of the Condair DA Series Desiccant
Dryer may result in danger to the user or third parties, and/or damage to
property. To ensure safe, proper, and efficient operation of the Condair DA
Series Desiccant Dryer, please observe and comply with all information and
safety instructions contained in this manual, as well as all relevant
documentation of components of the installed dehumidification system. If you
have additional questions, please contact your Condair representative. They
will be glad to assist you.
1.2 General
1.2.1 Limitations of the Manual
The subject of this manual is the Condair DA Series Desiccant Dryer in its
different versions. The various options and accessories that are described in
this manual pertain to the proper operation of the equipment. Additional
information and instructions are supplied with the options and accessories. It
is intended as a supplement to the installation, operation and maintenance
manuals. This manual is restricted to the installation, operation, and
maintenance of the Condair DA Series Desiccant Dryer. This manual is intended
for competent personnel suitably qualified for their respective tasks. The
specifications are supplemented by various separate items of documentation
(such as the parts list). Where necessary, appropriate cross-references are
made to these publications in the specification.
1.2.2 Symbols Used in This Manual
CAUTION!
The word “CAUTION” in conjunction with the general caution symbol is used to
provide safety instructions that, if neglected, may cause damage or
malfunction of the unit, or damage to property.
WARNING!
The word “WARNING” in conjunction with the general warning symbol is used to
provide safety instructions that, if neglected, may cause injury to personnel.
Other specific warning symbols may also be used in place of the general
symbol.
DANGER!
The word “DANGER” in conjunction with the general danger symbol is used to
provide safety instructions that, if neglected, may cause severe injury to
personnel or even death. Other specific danger symbols may also be used in
place of the general symbol.
6 Introduction
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1.2.3 Storage of Manual
Keep this manual in a place where it is safe and readily accessible. If the
equipment is moved to another location, please ensure that it remains with the
equipment. If the manual is lost or misplaced, please contact Condair for a
replacement.
1.3 Receiving and Storage
1.3.1 Inspection
After receiving the shipment, inspect the goods as follows: · Inspect the
shipping boxes for damage. Report any shipping box damages to the shipping
company
without delay. · Check the goods against the packing slip to ensure that all
items have been delivered. Report any
shortages to your Condair representative within 48 hours of receipt of the
goods. Condair does not accept responsibilities for any shortages beyond this
period. · Unpack the parts/components and check for any damage. If
parts/components are damaged, notify the shipping company immediately. ·
Verify the model type on the specification label to ensure that it is suitable
for your installation. Refer to “Model Designation” on page 13.
1.3.2 Storage, Packaging, and Transportation
Storage Store the Condair DA Series Desiccant Dryer in its original packaging
inside a protected area that meets the following requirements until it is
installed, or if it needs to be stored for an extended period of time: Room
temperature: -34 to 104 °F (-30 to 40 °C) Room humidity: 0 to 90% RH (non-
condensing)
Transportation For optimum protection always transport the unit and components
in their original packaging, and use appropriate lifting/transporting devices
(ex. forklift). Lifting or handling must be carried out by trained and
qualified personnel. Ensure that lifting has been fully planned and assessed
for possible risks, and that equipment is checked and operated by a skilled
operator. It is the customer’s responsibility to ensure that operators are
fully trained to handle heavy goods and to enforce any applicable lifting
regulations. The unit should be protected from rain and snow, and stand
upright. Avoid placing other goods on top of the unit.
Packaging Keep the original packaging of the unit/components for later use. If
the packaging needs to be disposed, observe local regulations on waste
disposal. Please recycle packaging where possible.
Condair DA
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Introduction 7
1.4 Safety Precautions
IMPORTANT! Never use the dehumidifier without the filters. The filters help
prevent contamination of the desiccant rotor and reduces capacity losses.
Missing filters will lead to premature failure of the heaters and desiccant
wheel.
The dehumidifier is NOT rated to be installed in rooms that require explosion-
proof equipment. The service panel on the dehumidifier should remain closed at
all times, except during servicing. Disconnect the unit from the supply source
before servicing the unit. The dehumidifier is designed to meet IEC IP 44
requirements. Regard all safety precautions described in this manual. Refer to
“For your Safety” on page 9.
1.5 Compliance
Follow all local guidelines and regulations regarding the installation and
operation of the unit; this includes (and not limited to) mounting, plumbing,
water, gas, ventilation, and electrical connections. Please consult your local
Condair representative to learn more.
8 Introduction
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Condair DA
2 For your Safety
General Every person who is tasked with the installation, operation and/or
maintenance of the Condair DA Series Desiccant Dryer must read and understand
this manual, as well as any respective installation, operation and/or
maintenance manuals before performing any work. Knowing and understanding the
contents of these manuals is a basic requirement for protecting personnel
against any kind of danger, preventing faulty operation, and operating the
unit safely and correctly. All labels, signs and markings applied to unit must
be observed, kept in a readable state, and NOT removed or altered.
Personnel Qualifications All procedures described in this document must only
be performed by personnel who are adequately qualified, familiar with the
unit, well trained, and are authorized by the customer. For safety and
warranty reasons, any activity beyond the scope of this manual must only be
performed by qualified personnel authorized by Condair. The unit may not be
used by persons (including children) with reduced physical, sensory, or mental
abilities, or persons lacking experience and knowledge unless they are being
supervised by a person responsible for their safety, or have received proper
instruction on the operation of the system. All personnel working with the
Condair DA Series Desiccant Dryer unit must be familiar with, and comply with
the appropriate regulations on workplace safety and prevention of accidents.
Intended Use The Condair DA Series Desiccant Dryer is intended exclusively for
air dehumidification and product drying using Condair-approved parts within
specified operating conditions (such as dehumidification of air at atmospheric
pressure). Refer to “Technical Specification” on page 16 in for details. Any
other type of application, without the express written consent of Condair, is
considered to be NOT conforming to its intended purpose, and may lead to
dangerous operation and will void the warranty. In order to operate the
equipment in the intended manner all information contained in this manual, in
particular the safety instructions, must be observed closely.
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For your Safety 9
Safety Precautions that Must be Observed
DANGER! Risk of electric shock!
The unit is mains powered. Using the On/Off button on the touch screen to shut
down the unit will not remove power from the unit. Live parts may be exposed
when the access panels or doors are removed. Touching live parts may cause
severe injury or even death.
Prevention: Before performing any work inside the dehumidifier, shut down the
dehumidifier properly, as described in “Shutting Down the Unit” on page 43.
The unit must be connected to the mains only after all mounting, installation,
and maintenance work has been completed, checked for correct workmanship, and
the access panels/doors are closed and fastened securely. Secure the unit
against accidental powerup. Only qualified personnel should perform
maintenance or repairs on the unit. Follow any lockout procedures when
servicing the unit.
WARNING! Risk of severe burns from contact with hot vapors! The dehumidifier
has an internal heater that heats the air to over 248 °F (120 °C), and can
dispel wet air with temperatures over 176 °F (80 °C). Contact with hot vapors
can result in severe burns. Prevention: Never perform any work while the
dehumidifier is operating. Shut down the dehumidifier and wait for the
components to cool down (at least 15 min) before working on the system. Wear
appropriate personal protective equipment when working near hot vapors. Refer
to “Shutting Down the Unit” on page 43 before fixing any leaks in the system.
WARNING! Risk of severe burns from contact with hot surfaces! The components
in the dehumidifier get very hot during operation. Some components in the
dehumidifier can be over 248 °F (120 °C). Contact with hot surfaces can result
in severe burns. Prevention: Avoid contact with hot surfaces. Shut down the
dehumidifier and allow components to cool down before working on the
dehumidifier. Refer to “Shutting Down the Unit” on page 43.
DANGER! The unit contains moving parts. Putting objects or body parts into the
unit can result in serious injury or damage to equipment! The unit contains
rotating parts, such as fans and a rotor. The rotor is heated by air with a
temperature between 176-248 °F (80-120 °C). Putting objects into the fan or
rotor will affect the proper functioning of the unit, causing damage to the
object and the equipment, and will become a safety hazard for people in the
vicinity of the unit.
Prevention: Avoid placing objects and body parts into the fan, and if work
must be performed, ensure that the unit is properly shut down and electrical
power is removed.
CAUTION!
The desiccant dryer can only be used for dehumidification of air and product
drying at atmospheric pressure. The desiccant dryer must NEVER be used without
the filters. This is to protect the rotor and heaters, and maintain capacity.
The desiccant dryer must NOT be installed in areas where explosion proof
equipment is required.
10 For your Safety
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Condair DA
Preventing Unsafe Operation All personnel working with the Condair DA Series
Desiccant Dryer must immediately report to the customer any alterations or
changes to the unit that may affect safety, and secure the unit against
accidental power-up.
If it is suspected that the unit cannot be operated safely for any of the
reasons listed below, shut it down immediately. Alterations and changes that
may affect safe operation include: damage to the unit loose or damaged
electrical connections improper operation leaks in the distribution system
Modifications to the Unit Prohibited Modifications are NOT permitted on the
Condair DA Series Desiccant Dryer without the express written consent of
Condair.
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For your Safety 11
3 Product Description
3.1 General Description
The Dehumidifier consists of a solid desiccant wheel containing hygroscopic Silica Gel that absorbs moisture from process air (air to be dried), at atmospheric pressure, with a temperature range between -22 to 104 °F (-30 to 40 °C).
Examples of applications:
Drying temperature of sensitive products
Helps protect sensitive equipment from corrosion
Drying after water damage, and during construction
Controlling humidity in museums and archives
Controlling humidity in production processes
Improving environment in damp areas
The Condair DA series comes in seven model sizes with two different voltages. Refer to “Technical Specification” on page 16 for more information.
12 Product Description
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3.2 Model Designation
The specification label on the side of the Condair DA Desiccant Dryer shows
the model type, serial number, and other ratings. Refer to the Fig. 1 below.
MODEL: XXXXXXXXXXXXXXXXXXXX
VOLTS: XXXX V
PHASE: 3
AMPS: XXXXX AMPS
KW: XXXXXX
MAX: xxx AMPS
Circuit Protection
Fig. 1: Specification label
DEHUMIDIFIER
E505566
S/N: XXXXXXXXXX HZ: 50/60
DATE: XXXXXXX MADE IN CANADA
3.3 Functional Description
The Condair DA Series Desiccant Dryer operates with two air streams; a large
volume air stream (process air) and a smaller volume air stream (reactivation
air) that pass through a desiccant rotor in the unit. The air streams pass
through the rotor in opposing directions and are driven by fans at the process
air inlet and the reactivation air inlet. These air streams are separated by
dividers on the surface of the rotor, and the opposing air streams are ducted
separately. Refer to Fig. 2 below.
4
3
1
2
Fig. 2: Dehumidification Process
1 Process air 2 Dry air
3 Reactivation air 4 Wet air
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Product Description 13
The desiccant, embedded in a matrix on axial flutes of the rotor, contains
Silica gel, a hygroscopic material, that absorbs water vapor directly from the
air. As the water vapor in the process air is absorbed, the air exiting the
desiccant becomes warmer and dryer, and the moisture content in the desiccant
increases. The dry air leaving the rotor then enters the space that needs
dehumidification. The adsorption process works in temperatures between -22 to
104 °F (-30 to +40 °C).
IMPORTANT! The adsorption process works in temperatures between -22 to 104 °F
(-30 to +40 °C); however, the adsorption process may also be reversed (i.e.
the desiccant is reactivated). Heated air, +248 °F (120 °C), can remove
moisture from the desiccant.
The smaller air stream (reactivation air) is heated to +248 °F (120 °C) by an
internal heater and passes through the rotor, absorbing moisture from the
Silica gel, reactivating it. As such, the reactivation air has an increase in
humidity. The warm, moist air is then ducted out of the building or space. The
warm wet air leaving the rotor can reach +176 °F (80 °C).
Casing
The dessicant dryer is for industrial and commercial use, and can be stacked.
Service to the unit can be performed by removing the access panel from the
side of the unit.
The resistant double-skin housing consists of Magnelis® and RAL9006 powder
coating and is insulated with 1.2 in (30 mm) thick non-combustible mineral
wool.
Rotor
Dehumidification is performed by passing air over a desiccant rotor made of
desiccant containing Silica Gel housed on heat-resistant sheets. These sheets
are placed axially through the rotor, providing a large surface area to volume
ratio for which moisture absorption may occur, and can withstand
moisturesaturated air without being damaged.
The rotor rotates around a stainless steel shaft and ball bearings to provide
consistent performance. A belt drive is tightly wrapped (under tension to
prevent slipping) around the rim of the rotor and is driven by a pulley on a
geared electric motor.
Note: The rotor will not be damaged even if the fan or the reactivation heater
should fail during operation.
Note: The rotor may be used in conjunction with a pre-cooling coil.
Note: The rotor is incombustible and non-flammable, with smoke index of 0.
Rotor Seals
The rotor has two silicone/Teflon seals on the rotor casing to help protect
the rotor. There are also four Teflon radial seals.
Rotor Guard
The unit is equipped with an inductive rotor guard. The rotation guard helps
ensure that the rotor is rotating quickly enough. A magnet on the rotor passes
by a sensor in the unit. If the magnet does not pass the sensor within 45
minutes, an alarm is activated. If the alarm is activated, the rotation guard
stops the unit from dehumidifying, and deactivates the reactivation heater if
the unit is restarted. If available, the rotor guard can be turned on by going
to the Service level page (refer to “Service Level Settings” on page 39).
14 Product Description
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Condair DA
Filters
IMPORTANT! Never use the dehumidifier without the filters. Operation without a
filter will result in reduced life of the unit and critical failure. The
dehumidifier has two separate panel filters; one for the process air (air to
be dried) inlet, and one for ther eactivation air inlet. Filters clean the air
prior to entering the unit and will extend the use of the rotor.
Fans (Process and Reactivation Air) The process air and reactivation air fans
(radial) are powered by energy efficient electronically commutated (EC)
motors. They are accessible for service behind the panels on the dehumidifier.
The reactivation fan in the unit will continue to operate for 6 minutes after
the unit is turned off.
Reactivation Heater The positive temperature coefficient (PTC) type
reactivation heater warms air that passes from the reactivation fan to the
rotor to remove moisture from the desiccant rotor. The reactivation wet air is
then removed from the space.
Rotor Drive Motor The rotor drive motor has ball bearings that drive the rotor
using a drive belt and pulley system. The bearings are designed to last the
life of the motor and no maintenance is required.
Electrical Panel The electrical panel is located behind the service panel, in
a separate compartment in the dehumidifier. Switches and indications are
located on a touch screen on the unit.
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Product Description 15
4 Product Specifications
4.1 Technical Specification
DA 300N DA 400N DA 600N DA 800N DA 1400N DA 2000N DA 2400N
Drying capacity at 68°F 60%rh Process airflow nominal Reactivation airflow nominal Nominal external pressure process air side Nominal external pressure reactivation air side Admissible temperature Admissible humidity Power Supply (208/3 option) Power consumption Electric power of regeneration heater Rated current for 208/3/60 models External fuse for 208/3/60 models Power supply (480/3 option) Power consumption Electric power of regeneration heater Rated current for 480/3/60 models External fuse for 480/3/60 models Connection diameter process air Connection diameter dry air Connection diameter reactivation air Connection diameter wet air Filter class process air Filter class reactivation air Dimension (HxWxD) Sound Pressure level 1) Weight
lb/hr
7.3 11.2 15.6 22.0 29.7 31.9
cfm
300 400 600 800 1400 2000
cfm
90 130 200 235 295 325
in. H2O in. H2O °F
1.2 0.8 1.2 0.8 1.2 1.2
1.2 1.0 0.8 1.2
1
0.8
-30 to +104
%RH
0 to 100 (non-condensing)
V/Ph/Hz
208/3/60
kW
5.8 8.8 11.9 14.8 21.6 22.1
kW
4.0 7.0 10.2 13.0 17.0 18.0
A
16 24.5 33.1 41
60 61.5
A
25
35
45
60
80
80
V/Ph/Hz
480/3/60
kW
7.9 9.6 12.9 15.6 20 23.4
kW
4.0 7.0 10.2 13.0 17.0 18.0
A
9.5 11.5 15.5 18.8 24.2 28.2
A
15
15
20
25
35
40
in.
15.75
in.
12.40
in.
7.9
in.
7.9
MERV 7
MERV 7
in.
38.5 x 50.6 x 39.0
Db(A)
62
62
62
63
68
69
lb
408 419 419 430 441 441
- Maximum sound pressure level at 3.3 ft. distance, with 10 ft. applied ducting.
44.1 2400 500 0.8 0.8
31.4 23.0 37.8 50
69 452
4.2 Control Signal
Control Signal Type
External Control (humidistat)
0-10 VDC; at 3 V, first heating stage at 5 V, second heating stage (if applicable)
Internal Control
Reactivation air fan speed: full speed or variable, depending on setting. Humidity sensor 1) Setpoint entered at dehumidifier control interface.
- Humidity sensors are not included with the unit. The sensors are offered by Condair for purchase. Please contact your local Condair representative.
16 Product Specifications
2597586_C_EN_2311_DA_IOM
Condair DA
5 Specification Drawings
D
A
47.2 in (1199 mm)
B C
35.8 in (910 mm)
39.0 in (991 mm)
Fig. 3: Specification Drawing
A Proc ess air inlet: B Dry air outlet: C Reactivation air inlet: D Wet air outlet:
Ø 15.7 in (400 mm) Ø 12.4 in (315 mm) Ø 7.9 in (200 mm) Ø 7.9 in (200 mm)
50.6 in (1284 mm)
Maintenance Access Panel
Condair DA
2597586_C_EN_2311_DA_IOM
Specification Drawings 17
6 Installation and Planning
6.1 General
Strictly observe and perform all installation tasks including the mounting of
the unit and power supplies as described in this manual. Observe and comply
with all local and national codes dealing with electrical installations.
Condair does not accept any liability for installation of humidification or
dehumidification equipment by unqualified personnel, or the use of equipment
and parts that are not authorized by Condair.
Personnel Qualifications All installation work must be performed only by
licensed personnel authorized by the customer. It is the customer’s
responsibility to verify qualifications of the personnel.
Safety Observe the following safety precautions:
DANGER! Risk of electric shock! The unit is mains powered. Using the On/Off
button on the touch screen to shut down the unit will not remove power from
the unit. Live parts may be exposed when the access panels or doors are
removed. Touching live parts may cause severe injury or even death.
Prevention: Before performing any work inside the dehumidifier, shut down the
dehumidifier properly, as described in “Shutting Down the Unit” on page 43.
The unit must be connected to the mains only after all mounting, installation,
and maintenance work has been completed, checked for correct workmanship, and
the access panels/doors are closed and fastened securely. Secure the unit
against accidental powerup. Only qualified personnel should perform
maintenance or repairs on the unit. Follow any lockout procedures when
servicing the unit.
WARNING! Risk of severe burns from contact with hot vapors! The dehumidifier
has an internal heater that heats the air to over 248 °F (120 °C), and can
dispel wet air with temperatures over 176 °F (80 °C). Contact with hot vapors
can result in severe burns. Prevention: Never perform any work while the
dehumidifier is operating. Shut down the dehumidifier and wait for the
components to cool down (at least 15 min) before working on the system. Wear
appropriate personal protective equipment when working near hot vapors. Refer
to “Shutting Down the Unit” on page 43 before fixing any leaks in the system.
WARNING! Risk of severe burns from contact with hot surfaces! The components
in the dehumidifier get very hot during operation. Some components in the
dehumidifier can be over 248 °F (120 °C). Contact with hot surfaces can result
in severe burns. Prevention: Avoid contact with hot surfaces. Shut down the
dehumidifier and allow components to cool down before working on the
dehumidifier. Refer to “Shutting Down the Unit” on page 43.
18 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
WARNING! The unit contains moving parts. Putting objects or body parts into
the unit can result in serious injury or damage to equipment! The unit
contains rotating parts, such as fans and a rotor. The rotor is heated by air
with a temperature between 176-248 °F (80-120 °C). Putting objects into the
fan or rotor will affect the proper functioning of the unit, causing damage to
the object and the equipment, and will become a safety hazard for people in
the vicinity of the unit. Prevention: Avoid placing objects and body parts
into the fan, and if work must be performed, ensure that the unit is properly
shut down and electrical power is removed.
CAUTION!
The desiccant dryer can only be used for dehumidification of air and product
drying at atmospheric pressure. The desiccant dryer must NEVER be used without
the filters. This is to protect the rotor and heaters, and maintain capacity.
The desiccant dryer must NOT be installed in areas where explosion proof
equipment is required.
6.1.1 Installation Overview
The Condair DA Desiccant Dryer is designed for indoor installation and can be
installed, with ducts, in the room to be dehumidified or in a separate room.
The installation requires a duct to remove wet air from the Condair DA
Desiccant Dryer, an air duct for the reactivation air, a duct for the dry air
outlet (recommended, especially for distribution), and connection to the mains
supply (with disconnect switch). IMPORTANT! The reactive air supply and
exhaust duct needs to be routed outside the space to be dehumidified to
prevent negative pressure.
6.2 Location Requirements
The location of the dehumidifier is dependent on the space to be dehumidified
and the distance wet and reactivation air must travel to or from the
dehumidifier. It is recommended that the wet air duct and reactivation air
duct be as short as possible to minimize heat losses in the ducts.
The Condair Condair DA Desiccant Dryer must be placed: · Indoors. · In a
location that allows it to be inspected and serviced. Refer to “Clearance
Requirements” on page
20. · Horizontally, on its legs, and bolted (recommended) to the floor.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 19
6.3 Clearance Requirements
E
A B
D C
Fig. 4: Clearances
Table 1: Clearances for Condair Condair DA Desiccant Dryers (all units). Refer to Fig. 4 above.
A 0 in (0 mm)
B 0 in (0 mm)
C 15.7 in (400 mm)
D 39.4 in (1000 mm)
E 0 in (0 mm)
6.4 Site Requirements
Prepare the Condair DA Series Desiccant Dryer for installation by ensuring the
following site requirements are satisfied. Report any discrepancies to your
Condair representative. Ensure that the installation of the Condair DA Series
Desiccant Dryer is compliant with all applicable local regulations and codes.
6.4.1 Air Supply Requirements
Filters in the dehumidifier unit help preserve the longevity of the unit and
helps prevent dangerous situations. The unit uses a heater for reactivation
air and a silica gel rotor, so care must be taken to reduce or prevent
contaminants from entering the unit. Such contaminants may include sugar or
wood “dust”, or flammable vapors. For specific situations and filters, please
contact your Condair representative.
6.4.2 Power Supply Requirements
Mains powered Electrical disconnect switch
20 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
6.5 Installation
The Condair DA Desiccant Dryer may be installed in the dehumidified room, or
in a separate room. To obtain the best performance, equip diffuser to fan
outlets. IMPORTANT! Ensure that the rooms supplying air to the dehumidifier
and rooms requiring dry air from the dehumidifier are properly vented to
reduce formation of pressure imbalance. Install dampers in the process air
duct to correct the dry air volume.
6.5.1 Installing the unit in the room to be dried
In this set-up, the unit is placed in the room needing dehumidification. ·
Process air may come from the room itself, or from another source or location.
Does not require duct
if coming from the room itself. Requires a duct if coming from elsewhere. ·
Dry air enters the room from the unit. Does not require duct. · Wet air leaves
the unit to another location or outside. Requires duct out of the room. ·
Reactivation air may come from the room itself, or from another location. Does
not require duct if
coming from the room itself. IMPORTANT! The intake and exhaust must be at
least 6 ft (2 m) apart and installed in a way to prevent exhausted air from
being directed into the intake. For example, use 90° hoods oriented away from
each other.
6.5.2 Installing the unit in a separate room
In this set-up, the room that is housing the unit and the room needing dry air
are separate. · Process air may come from the room housing the unit, or from
another source or location (including
the room needing dry air). Does not require duct if coming from the room
housing the unit. Requires a duct if coming from elsewhere. · Dry air is
ducted to the desired room. Requires a duct. · Reactivation may come from the
room housing the unit, or from another location (including the room needing
dry air). Does not require duct if coming from the room housing the unit.
Requires a duct if coming from elsewhere. · Wet air leaves the unit to another
location or outside. Requires duct out of the room housing the unit.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 21
-C-
-B-
-A-
5
1 4
50.6 in (1284 mm) 47.2 in (1199 mm)
-C-
-B-
2
3 -A-
Process Air Wet Air
Dry Air Reactivation Air
Fig. 5: Connections for the Unit
1 Process air connection Ø 15.7 in (400 mm), see “Connecting the Process Air
Duct Inlet” on page 24) 2 Dry air connection Ø 12.4 in (315 mm) 3 Reactivation
air connection Ø 7.9 in (200 mm), see “Connecting the Reactivation Air Duct
Inlet” on page 25) 4 Wet air connection Ø 7.9 in (200 mm), see “Connecting the
Wet Air Duct Outlet” on page 25) 5 Service panel
22 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
6.5.3 Dampers and Air Balancing Schematic
Important: All units are delivered with process and reactivation air fans set to operate at nominal RPM and flow rate at maximum allowed inlet and outlet duct pressures. It is recommended to adjust the airflows as per the submittal approved by the engineers to ensure correct unit operation and performance.
Process Air Duct (1)
Dry Air Duct (2)
Damper for Process Air
Process Air In Wet Air Out
Dry Air Out Reactivation Air In
Wet Air Duct (4)
Damper for Reactivation Air Reactivation Air Duct (3)
Fig. 6: Example of Damper Locations and Air Balancing setup
1 Process Air: There are two methods for achieving the require airflow:
a. Add a manually set damper to the process air duct, as illustrated in Fig.
6. The damper must be adjusted to achieve the appropriate air volume in CFM,
as measured with suitable anemometers.
b. The EC fan is factory wired with a link “J5” installed between terminals 4
& 5 shown in Appendix A-3: Wiring Diagrams to operate at nominal RPM and flow
rates at nominal allowed combined inlet and outlet pressure (see table in
Section 4.1). The link “J5” can be replaced with an external independent 0-10V
signal from an external fan controller or 10-turn 500-ohm potentiometer (see
“Connection of External Controls for Process Air EC Fan” on page 29).
Regardless of the method used, it is crucial to calibrate the fan to ensure
that the required CFM is achieved.
2 Dry Air: The ducts should be selected to have the minimum possible pressure
drop (see table in Section 4.1 for nominal external pressure for process and
reactivation air side), also to prevent unnecessary positive pressure building
up in the dry air chamber inside the unit.
3 Regeneration Air: There are two methods for adjusting the airflow:
a. Add a manually set damper in the regeneration air duct, as illustrated in
Fig. 6 above. The damper needs to be adjusted to achieve the appropriate air
volume in CFM, as measured with suitable anemometers.
b. The EC fan is factory wired with a link “J6” installed between terminal
blocks 10 & 12 shown in Appendix A-3: Wiring Diagrams to operate at nominal
RPM and flow rates at nominal allowed combined inlet and outlet pressure (see
table in Section 4.1). The link “J6” can be replaced with an external
independent 0-10V signal from an external fan controller or 10-turn 500-ohm
potentiometer (see “Connection of External Controls for Regeneration Air EC
Fan” on page 30). Regardless of the method used, it is crucial to calibrate
the fan to ensure that the required CFM is achieved.
4 Wet Air: The wet air duct should be insulated and the ducts should be
selected to have the minimum possible pressure drop at nominal allowed
combined inlet and outlet pressure (see table in Section 4.1). In this duct,
there is a risk of condensation. To prevent a collection of condensate, this
duct should slop down in angle of at least >2° or have a condensate drain on
its lowest point (p-trap with condensate well). If the unit is equipped with
full modulating capacity, there is an increased risk of condensate. In this
case, we recommend using corrosion resistant ducts.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 23
6.5.4 Safety
Observe all safety precautions and comply with local installation codes. Refer
to “For your Safety” on page 9.
6.5.5 Mounting the Dehumidifier
Refer to “Mounting Requirements” for mounting requirements. The Condair DA
Desiccant Dryer comes equipped with legs and is intended to be mounted indoors
and on the floor. It is recommended to bolt the legs down to the floor.
Mounting considerations: · Ensure that there is enough clearance around the
unit for ducting and servicing. Refer to “Clearance
Requirements” on page 20. · Ensure that the unit is horizontal and on a level
surface. · Ensure that the unit is secured (ex. bolted).
6.5.6 Connecting the Process Air Duct Inlet
Typical installations of the Condair DA Desiccant Dryer do not require a
process air duct to the unit because the unit is installed in the space
needing dehumidification. Instead, air into the dehumidifier is taken from the
space directly. Diameter of the Process Air Connection: 15.7 in (400 mm)
Considerations for the Process Air Connection: · Units installed in the
dehumidified room should be installed with a protection net for the process
air
inlet. · Use rivets or mounting screws to ensure that the duct connection is
secure. · For units installed in a separate room, use a duct to supply the
unit with process air. Follow local guidelines. Note: A damper may be
installed in the process air duct to allow the correct commissioning of the
dry air volume.
24 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
6.5.7 Connecting the Reactivation Air Duct Inlet
Reactivation air enters the dehumidifier and passes through a heater. The air
is heated and then passes through a section of the rotor, where moisture from
the Silica Gel is released into the air stream and removed from the system.
Because of the moisture content of the exiting reactivation air, condensation
may form and should be removed. Refer to “Connecting the Wet Air Duct Outlet”
on page 25. Typical set-ups, where the Condair DA Desiccant Dryer is installed
in the dehumidified room, do not require a duct connection for the
reactivation air. In these installations, the air is taken from the space. A
coarse wire net is recommended to filter out debris and other small objects
from entering the unit. Diameter of the Reactivation Air connection: 7.9 in
(200 mm)
Considerations for the reactivation air duct: · Ensure that the duct feeding
the unit is as short as possible. · Use rivets or mounting screws to ensure
that the duct connection is secure. · Ensure that a filter (coarse wire net)
is used at the inlet to prevent foreign objects from entering the
dehumidifier and internal heater. · The duct may be sloped upwards. Prevent
objects from falling into the duct. · Install a condensate drain at the exit.
6.5.8 Connecting the Wet Air Duct Outlet
Wet air leaving the Condair DA Desiccant Dryer comes from the reactivation air
that has passed through the internal heater and desiccant rotor.
IMPORTANT! The reactivation air leaving the desiccant rotor is hot and can
reach temperatures of over 176 °F (80 °C). Diameter of Wet Air Connection: 7.9
in (200 mm)
Considerations for the wet air duct: · Wet air from the desiccant dryer should
be exhausted to the outside. · A coarse wire net should be installed at the
exhaust opening to prevent entry from animals and large
debris. · The duct should be as short as possible. · Condensate could form in
the duct; slope the duct downwards to prevent condensate from returning
to the dehumidifier. The downward slope should have an angle of 2° or more. ·
Prevent standing water. Condensate could form in the duct if it is long, or
slopes upwards. A drain-
age hole ~0.15-0.25 in (4-6mm) may be drilled at the duct’s lowest position.
Alternatively, a drain line may installed in the duct. Contact your Condair
representative for information on proper draining. · Place warning signs at
the outlet, or where applicable. The wet air temperature may reach above 176
°F (80 °C). · Use rivets or mounting screws to secure the duct connection to
the unit. · Insulate the wet air duct system.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 25
6.5.9
Installing the Electrical Connections
Refer to “Model Designation” on page 13 and “Power Supply Requirements” on
page 20 for the electrical requirements. All wiring must be in accordance with
local electrical codes.
Safety The electrical installation work requires removal of the door panels in
the humidifier. Observe the following safety precautions:
DANGER! Risk of electric shock!
The unit is mains powered. Using the On/Off button on the touch screen to shut
down the unit will not remove power from the unit. Live parts may be exposed
when the access panels or doors are removed. Touching live parts may cause
severe injury or even death.
Prevention: Before performing any work inside the dehumidifier, shut down the
dehumidifier properly, as described in “Shutting Down the Unit” on page 43.
The unit must be connected to the mains only after all mounting, installation,
and maintenance work has been completed, checked for correct workmanship, and
the access panels/doors are closed and fastened securely. Secure the unit
against accidental power-up.
Only qualified personnel should perform maintenance or repairs on the unit.
Follow any lockout procedures when servicing the unit.
· All electrical installation work must be performed only by a licensed
electrician authorized by the customer. It is the customer’s responsibility to
verify qualifications of the personnel.
· The electrical installation must be performed according to the wiring
diagrams in this manual, the instructions in this section, as well as
applicable national and local codes.
· All cables must lead into the unit, via appropriate cable glands or
grommets, and be properly supported.
· Make sure the cables are secured, and do not rub on any components or become
a tripping hazard. · Observe national and local codes for maximum cable length
and required wire sizes for cables. Ensure that the external
isolation/disconnect switch is open and the unit is disconnected from mains,
and the unit is switched to the Off position before proceeding. Refer to the
“Appendix A-3: Wiring Diagrams” on page 60. Once the unit is connected to the
main power supply, check that all three phases, at terminals L1, L2, and L3,
are live, and the unit is on standby (the standby light on the touch screen is
lit and the machine is not dehumidifying).
6.5.9.1 Electrical Connections Checklist
Power supply meet the voltage and current requirements shown on the
specification label? Refer to “Model Designation” on page 13.
All cables fastened securely? All electrical connections meet applicable
codes? Electrical installation meet the applicable national and local codes?
26 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
1 2 3 4 5 6 7 8 9 10 11 12 GND / 0V 24V N/A N/A N/A AO 0-10V N/A Temp. Reset
6.5.10 Installation Work External Controls Connections
Connecting a demand signal
DA
Constant Speed J6 Variable Speed
RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
On/Off Humidity Controller Input
RDC 0-10V Digital Wall Humidistat
2602797
1 234 567 8
Factory Jumper
The signal cable of an external controller demand signal (if the internal P/PI
controller is used) is to be connected according to the wiring diagram to
terminal “5” (GND), “7” (+24V) and “6” (0-10V Humidity Controller Signal) of
the dehumidifier terminal block inside the control panel compartment.
The connecting cable must be led through a cable gland into the control panel
compartment.
Note: For modulating control do not connect any wires to terminal 1 & 2 of the
dehumidifier.
Note: This configuration package is offered by Condair (P/N 2602797) factory
programmed for dehumidification. Please contact your local Condair
representative.
Connecting a humidity sensor
DA
Constant Speed J6 Variable Speed
RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
On/Off Humidity Controller Input
CDC-NA
2-10V Duct Humidity Sensor 1509857
123
1 2 3 4 5 6 7 8 9 10 11 12 0V/GND 24V AC/DC 2-10 VDC
The signal cable of a humidity sensor is to be connected according to the
wiring diagram to terminal “5” (GND), “7” (+24V) and “4” (Humidity Transducer
Signal RH(0-10V)) of the dehumidifier terminal block inside the control panel
compartment.
The connecting cable be led through a cable gland into the control panel
compartment.
Note: For modulating control do not connect any wires to terminal 1 & 2 of the
dehumidifier.
Note: This configuration package is offered by Condair (P/N 2597926). This
package will require programming for dehumidification. Please contact your
local Condair representative.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 27
1 2 3 4 5 6 7 8 9 10 11 12 0V / GND 24V AC/DC DO1 DO1 DO2 DO2 RT RT
Connecting 24V On/Off humidistat
DA
Constant Speed J6 Variable Speed
RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
CHR-NA On/Off Digital Wall Humidistat
2548731
1 234 567 8
The signal cable of 24V On/Off humidistat is to be connected according to the
wiring diagram to the terminals “1” and “2” (On/Off Humidity Controller
Input), “5” (GND) and “7” (+24V) of the control terminal block inside the
control panel compartment.
The connecting cable must be led through a cable gland into the control panel
compartment.
Note: This configuration package is offered by Condair (P/N 2597934). Please
contact your local Condair representative.
Connecting 0-10V humidistat with remote duct sensor
DDC-NA
Wall Humidistat without sensor
DA
2520261
Constant Speed J6 Variable Speed
RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
On/Off Humidity Controller Input
1 234 567 8
Factory Jumper
CDC-NA
2-10V Duct Humidity Sensor 1509857
123
1 2 3 4 5 6 7 8 9 10 11 12 0V / GND 24V N/A N/A N/A A0 0-10V Ext. Sens In Temp. Reset 0V/GND 24V AC/DC 2-10 VDC
The signal cable of an external controller or of a humidity sensor (if the
internal P/PI controller is used) are to be connected according to the wiring
diagram to terminal “5” (GND), “6” (0-10V Humidity Controller Signal) of the
control terminal block inside the control panel compartment.
The connecting cable must be led through a cable gland into the control panel
compartment.
Note: This configuration package is offered by Condair (P/N: 2602796). Please
contact your local Condair representative.”
28 Installation and Planning
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Condair DA
6.5.11 Connection of External Controls for Process Air EC Fan
Note: Only adjust the speed of the fan to achieve the nominal CFM. The
dehumidification output should be controlled by the humidistat connected to
the control terminal.
Connecting a 0-10V control signal
0-10V Controller
0V/GND 0-10 V
KL1
L3
L3
L2
L2
L1
L1
PE
KL3
D1
GND
GND
4
0-10V
E1
5
+10V
10V
KL2
24V
COM
COM (11)
NC
NC (12)
DA-300-1400 DA-2000-2400 480VAC (EBM)480VAC (Z-A)
DA
Black Blue
Gr/Ye
Blue Yellow
Red
L N
PE
GND 0-10V +10V
White2 White1
COM NC
DA-300-800 208VAC (EBM)
Process Air Fan
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (12)
EC-M
DA-1400-2000 208VAC (Z-A)
The signal cable of an external 0-10V controller is to be connected according
to the wiring diagram to terminal “4” and “GND” of the process air fan
terminal block inside the control panel compartment. Important: Factory
installed link “J5” between terminals “4” and “5” must be removed.
The connecting cable must be led through a cable gland into the control panel
compartment.
Connecting a potentiometric control signal
Potentiometric Controller
P1
GND 1 2
4 5
KL1 L3 L2 L1 PE
KL3
GND 0-10V +10V
KL2
COM NC
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (12)
Black Blue
Gr/Ye
Blue Yellow
Red
L N
PE
GND 0-10V +10V
White2 White1
COM NC
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (12)
DA
Process Air Fan
EC-M
DA-300-1400 DA-2000-2400 480VAC (EBM)480VAC (Z-A)
DA-300-800 208VAC (EBM)
DA-1400-2000 208VAC (Z-A)
The signal cable of an external potentiometric controller is to be connected
according to the wiring diagram to terminal “4”, “5” and “GND” of the process
air fan terminal block inside the control panel compartment. Important:
Factory installed link “J5” between terminals “4” and “5” must be removed.
The connecting cable must be led through a cable gland into the control panel
compartment.
Condair DA
2597586_C_EN_2311_DA_IOM
Installation and Planning 29
6.5.12 Connection of External Controls for Regeneration Air EC Fan
Note: In the below setup potentiometer should only be used to achieve the nominal airflow.
Connecting a demand signal and potentiometer
Potentiometric Controller
P1
0-10V Wall Humidistat
1 2 3 4 5 6 7 8 9 10 11 12 GND / 0V 24V N/A N/A N/A AO 0-10V N/A Temp. Reset
DA
Constant Speed Variable Speed RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
On/Off Humidity Controller Input
GND 1 2
1 234 567 8
Factory Jumper
The signal cable of an external controller demand signal (if the internal P/PI
controller is used) is to be connected according to the wiring diagram to
terminal “5” (GND), “7” (+24V) and “6” (0-10V Humidity Controller Signal) of
the dehumidifier terminal block inside the control panel compartment.
The signal cable of an external potentiometric controller is to be connected
according to the wiring diagram to terminal “10” (RA Fan Input), “12”
(Constant Speed) and “5” (GND) of the control terminal block inside the
control panel compartment.
Important: Factory installed link “J6” between terminals “10” and “12” must be
removed.
The connecting cables must be led through cable glands into the control panel
compartment.
30 Installation and Planning
2597586_C_EN_2311_DA_IOM
Condair DA
1 2 3 4 5 6 7 8 9 10 11 12 GND / 0V 24V N/A N/A N/A AO 0-10V N/A Temp. Reset
Modulating the reactivation air fan based on the demand signal (true
modulation)
0-10V Wall Humidistat
DA
Constant Speed
Variable Speed J6
RA Fan Input
RA Fan Modulation Control
Remote Fault Indication (24 V, 1 Amp max.)
+24V 0-10V Humidity Controller Signal GND RH (0-10V) Humidity Transducer Signal GND
On/Off Humidity Controller Input
1 234 567 8
Factory Jumper
The signal cable of an external controller demand signal (if the internal P/PI
controller is used) is to be connected according to the wiring diagram to
terminal “5” (GND), “7” (+24V) and “6” (0-10V Humidity Controller Signal) of
the dehumidifier terminal block inside the control panel compartment.
Factory installed link “J6” between terminals “10” and “12” must be removed
and connected between terminal “11” and “10”.
The connecting cable must be led through the cable glands into the control
panel compartment.
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Installation and Planning 31
7 User Interface
7.1 Control Software
The programmable logic controller (PLC) in the Condair DA Desiccant Dryer
features a touchscreen, LCD display, that allows you to control the
dehumidifier, runtime meters, and alarms. The controller also features
functions to protect the rotor from excess rotation, functions to safely cool
the internal heater, and functions that control dehumidity through an external
0-10 V humidity sensor or control signal.
7.1.1 Navigation Elements
The graphic interface comprises of several pages that allow you control the
unit or navigate to other pages in the software. To activate the touch screen,
simply tap on the display. This will reveal the Main page. From there, you may
access the Operation, I/O’s, or Menu page. The general structure of the
software is shown in Fig. 7 below. The display will automatically turn off
after 15 minutes. Touch the screen to turn the display on. Note: The display
remains on while an alarm is active.
Main View unit status. Turn the unit on/off, manual or auto. Turn on process fan (auto).
Operation View status of the unit, such as operation status and control options
I/O’s View the digital inputs and
outputs of the controller
View Runtime
Menu
View Alarms
View and reset
Pending Alarms
View, refresh, or
reset Alarm Group
View, reset, or acknowledge Alarm Details
View Alarm
History
Service Level
Reset runtime
meters
passcode: 1111
Communication Setup
Change Modbus or TCP/IP settings
passcode: 4498
Fig. 7: GUI Layout
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7.1.2 Main Page
The Main page shows the unit status and three buttons that allow you to turn
the unit on/off, set the unit to manual or automatic mode, and set the process
fan to run continuously.
There are three status lights on the Main page: Operation – turns green when
the unit is turned on and the unit is dehumidifying. Stand by – turns orange
while the unit is on, AND the unit is NOT dehumidifying. Alarm – turns red
or yellow while an alarm is active. This light will remain on until the
alarm(s) is
acknowledged and reset. Refer to “Reset Alarms” on page 45.
Unit On/Off Turn the unit ON or OFF.
Manual/Auto MANUAL: Run the unit continuously. AUTO: Unit is run with a
humidity control signal, or an external on/off signal.
Cont. P. A. Fan Run the process air fan continuously. Allows the air to
circulate, even if no dehumidification is required.
7.1.3 Operation Page
The Operation page shows the operational status of the unit and the available
control options.
Operation Status Operation mode shows the unit in AUTO or MANUAL mode. If
dehumidification is ON, the unit is operational. If OFF, the unit is in Stand
by. This information can also be seen on the Main page.
Dehumidifier Control Options If a humidity sensor is connected, the unit
starts when the sensed humidity is greater than the setpoint humidity(default
setpoint: 50%). If there is no sensor, the humidity sensor value will read 0%.
If a 0-10 V signal is used to control the humidity, the first heating stage
occurs when the control signal exceeds 3 V. At 5 V, the second heating is
activated (if applicable. The reactivation fan runs at full speed.
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User Interface 33
7.1.4 I/O Input Outputs Page
The I/O’s page shows the current digital inputs and outputs in the controller.
The inputs and outputs are indicated with 1’s and 0’s. · 1 = On (or Auto) · 0
= Off Note: These inputs/outputs differ based on the unit size and version.
Digital Inputs Rotation guard Reactivation heater fuse Process air fan fuse
Reactivation air fan/Drive motor fuse OH2 Overheat protection Process air fan
thermal Filter guard External start/humidstat External emergency stop
Reactivation air fan thermal
Digital Outputs Reactivation heater step 1 Reactivation heater step 2 Process
air fan Reactivation air fan Rotor drive motor External alarm indication
7.1.5 Menu Page
The Menu page shows the unit’s component runtime, alarms, software version,
time and date. Accessing the Service level screen and the Communication Setup
screen allows you to reset the service timer and set up how the unit
communicates
Runtime – view how long components in the unit have been on. See “Runtime” on
page 35. Alarms – view alarm history and details, acknowledge, and reset
acknowledged alarms. See “Alarms” on page 36. Service Level – (requires
password) reset runtime meters. See “Service Level Settings” on page 39.
Communication Setup – (requires password) communicate via Modbus, TCP/IP, or
remotely. See “Communication Settings” on page 40.
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Condair DA
7.1.5.1 Runtime The Runtime page shows the active time of components in the
Condair DA Desiccant Dryer, as well as the total dehumidifier runtime, and
hours since maintenance.
Here, you can find the runtime (in hours) for the: Dehumidifier Process
air fan Reactivation air fan Drive motor You can also find out the time
(in hours) since maintenance of the following components: Process air filter
Reactivation air filter Rotor seals Note: The runtime meters for
maintenance (bottom three) can be reset from the Service Level page. Refer to
“Service Level Settings” on page 39.
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User Interface 35
7.1.5.2 Alarms
Alarms alert you to any complications with the operation of the unit. While an
alarm is active, the alarm status light on the Main page will display a red or
yellow light, depending the urgency. Urgent alarms are shown with red, and
non-urgent alarms are shown with yellow.
Issues causing urgent alarms may cause damage to the unit, so the dehumidifier
ceases operation. Non-urgent alarms do not cease operation of the unit.
The button
If an urgent alarm occurs, the unit will stop running. The unit can be
restarted, but without the functions connected to the cause of the alarm. The
alarm will remain active until the cause of the alarm has been taken care of.
A non-urgent alarm will not stop the unit.
To remove the alarm, once the issue is resolved; the alarm must be
acknowledged under the Pending alarm submenu. Then turn off and restart the
unit.
The Alarms page shows Urgent or Non-Urgent alarms (see “Pending Alarms” on page 37, and “Alarm History” on page 38.
Urgent alarms indicate an issue with components critical to proper functioning
of the unit.
These items include: Reactivation air heater Process air fan / dry air fan
Reactivation air fan / wet air fan Drive motor Process air fan thermal
protection Reactivation air fan thermal protection
(when available) High temperature limit (when available) OH2 Overheat
protection
Non-urgent alarms indicate possible issues that may affect the performance of
the unit.
These components include: Process air filters Reactivation air filters
Rotor seals Reactivation air temperature thermostat
(stops the reactivation heaters when active) Filter guard
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Pending Alarms Access your list of all pending alarms by tapping on the
Pending Alarms button on the Alarms page.
On this page, you can see the number of active issues of urgent and non-urgent
alarms. Details button ( ) – See the alarms in the group.
Press the button again to see the specific alarm’s details. ESC – Return to
the previous page. Reset – Resets all inactive alarms in the group.
Refresh – Reloads the page.
Alarms in Group and Alarm Details You can view the alarms in either urgent or
non-urgent groups. The Alarms in Group page shows a brief overview of the
alarms in the group. This information includes the alarm’s: ID –
Identification number Time On – When the alarm was triggered Ack –
Acknowledged: (Y)es or (N)o Alarm Name – Name of the alarm Pressing the
Details button ( ) next to an alarm brings you to the Alarm Details page,
where you press Ack to acknowledge the alarm. Pressing Reset will reset the
alarm, only if the cause for the alarm is NOT active. IMPORTANT! Reset an
alarm after it has been acknowledged.
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User Interface 37
Alarm History Alarm history shows information about old alarms. It shows the
time the alarm occurred and was resolved, the time elapsed before
acknowledgment and when it was reset. Use the left and right arrows on the
touchscreen to go between alarm entries.
To clear the alarm history, go to the second service level page (see “Service
Level Settings” on page 39, requires password) and press Clear alarm history.
38 User Interface
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Condair DA
7.1.5.3 Service Level Settings Password: 1111 There are two service level
pages. The second service level page is accessed by pressing the arrow button
( ) at the bottom of the screen.
The first service level page shows the runtime meters and runtime reset
buttons for the following components (in hours): Time since process air
filter was changed. Time since reactivation air filter was changed. Time
since rotor seals were replaced. Process air fan runtime. Reactivation air
fan runtime. Drive motor runtime. The second service level page shows the
adjustable interval period for the process air filter, reactivation air
filter, and the rotor seal, before an alarm is activated. If you are using a
humidity sensor, the page also shows the PID controller settings: P-band –
range above and below the humidity setpoint. I-time – controls the speed of
the controller. PID output – displays the dehumidication demand between
0-100 (stop = 0, start = 30). IMPORTANT! The PID settings should not be
changed. Consult your Condair representative. In addition to this, the second
service level page shows buttons that will allow you to clear the alarm
history (refer to “Reset Alarms” on page 45), and turn on/off the rotor
rotation guard (if available).
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User Interface 39
7.1.5.4 Communication Settings
Password: 4498 The Communication Settings page displays settings for Modbus
TCP/IP and RS485 connections, as long as a communication card is installed.
Note: The Modbus data points are located here:”Appendix A-4: Communication” on
page 64.
Modbus Network ID Default: 35
RS 485 Choose between six different combinations, then save.
Modbus TCP/IP Enter the IP Address, Gateway, and Subnet, then save.
40 User Interface
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8 Operation
8.1 General
Personnel Qualifications The Condair DA Series Desiccant Dryer must only be
operated by personnel who are adequately qualified, competent, and are
authorized by the customer.
Safety Observe the following safety precautions.
DANGER! Risk of electric shock! The unit is mains powered. Using the On/Off
button on the touch screen to shut down the unit will not remove power from
the unit. Live parts may be exposed when the access panels or doors are
removed. Touching live parts may cause severe injury or even death.
Prevention: Before performing any work inside the dehumidifier, shut down the
dehumidifier properly, as described in “Shutting Down the Unit” on page 43.
The unit must be connected to the mains only after all mounting, installation,
and maintenance work has been completed, checked for correct workmanship, and
the access panels/doors are closed and fastened securely. Secure the unit
against accidental powerup. Only qualified personnel should perform
maintenance or repairs on the unit. Follow any lockout procedures when
servicing the unit.
WARNING! Risk of severe burns from contact with hot vapors! The dehumidifier
has an internal heater that heats the air to over 248 °F (120 °C), and can
dispel wet air with temperatures over 176 °F (80 °C). Contact with hot vapors
can result in severe burns. Prevention: Never perform any work while the
dehumidifier is operating. Shut down the dehumidifier and wait for the
components to cool down (at least 15 min) before working on the system. Wear
appropriate personal protective equipment when working near hot vapors. Refer
to “Shutting Down the Unit” on page 43 before fixing any leaks in the system.
WARNING! Risk of severe burns from contact with hot surfaces! The components
in the dehumidifier get very hot during operation. Some components in the
dehumidifier can be over 248 °F (120 °C). Contact with hot surfaces can result
in severe burns. Prevention: Avoid contact with hot surfaces. Shut down the
dehumidifier and allow components to cool down before working on the
dehumidifier. Refer to “Shutting Down the Unit” on page 43.
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Operation 41
DANGER! The unit contains moving parts. Putting objects or body parts into the
unit can result in serious injury or damage to equipment! The unit contains
rotating parts, such as fans and a rotor. The rotor is heated by air with a
temperature between 176-248 °F (80-120 °C). Putting objects into the fan or
rotor will affect the proper functioning of the unit, causing damage to the
object and the equipment, and will become a safety hazard for people in the
vicinity of the unit. Prevention: Avoid placing objects and body parts into
the fan, and if work must be performed, ensure that the unit is properly shut
down and electrical power is removed.
CAUTION!
The desiccant dryer can only be used for dehumidification of air and product
drying at atmospheric pressure. The desiccant dryer must NEVER be used without
the filters. This is to protect the rotor and heaters, and maintain capacity.
The desiccant dryer must NOT be installed in areas where explosion proof
equipment is required.
8.2 Starting Up
Ensure that the proper commissioning has been performed, and the Condair DA
Desiccant Dryer is connected to the mains power supply. Refer to “First-time
Commissioning” on page 55.
To start the Condair DA Desiccant Dryer: 1. Tap on the touchscreen to see the
main page. The unit should be on Standby. 2. Under Unit On/Off, tap the switch
button to ON. 3. Determine if the dehumidifier should run off of a signal, or
run continuously.
· Tap the Manual/Auto switch button to MAN or AUTO. » MAN – (manual) run the
dehumidifier continuously. » AUTO – (automatic) run the dehumidifier on a
control or on/off signal.
4. Determine if the process fan should run continuously (in automatic mode).
· Tap the Cont. P. A. Fan (Continuous Process Air Fan) switch button to OFF or
ON. » ON – the process fan will run continuously while the unit is in
Automatic mode. » OFF – the process fan energizes only when dehumidification
is needed.
42 Operation
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8.3 Shutting Down the Unit
IMPORTANT! The Condair DA is mains powered. Disconnect the dehumidifier from
the mains power supply before opening any service panels. Ensure that the
external disconnect switch has removed the unit from the mains power supply.
To shut down the Condair DA Desiccant Dryer: 1. Touch the LCD screen to
display the Main Page of the dehumidifier. On the touch screen, tap the
Unit On/Off button to turn the unit OFF. Note: If the unit has been running,
the reactivation air fan will continue to run for 6 minutes to purge excess
heat.
8.4 Configuring the Control Software
Insert communication modbus table and forward to instructions for write-able
settings: · Analog Setpoint – humidity setpt for hum sensor · On/Off (see
shutting down/starting) · Turn on cooling fan · Set unit to automatic or
manual · Allow process fan to run continuously
8.5 Resetting Alarms
Refer to “Reset Alarms” on page 45.
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Operation 43
9 Maintenance
9.1 General
Strictly observe all safety precautions, and perform only those maintenance
tasks described in this manual. Refer to “For your Safety” on page 9. Use only
original Condair replacement parts. All maintenance work must be performed
only by licensed personnel authorized by the customer. It is the customer’s
responsibility to verify qualifications of the personnel. The maintenance work
may require removal of the cover on the unit.
9.2
Maintenance List
The maintenance intervals for the dehumidifier depend on the environment. As
such, the maintenance frequency will differ between units, so regular
inspections should be performed until a suitable maintenance interval is
created. Incorrect service and maintenance may reduce the efficiency of the
unit.
Perform the following maintenance tasks at the (suggested) intervals specified
in “Maintenance List” on page 44 on the next page. For the components
referenced in the table, refer to “Condair DA Spare Parts List” on page 49.
Table 2: Maintenance List
Task/Component Filters Rotor (and bearings)
Rotor Drive Belt
Frequency
Description
Monthly, or as needed Check the filters for debris and dust, and replace them as necessary. Blockages in the filter may result in pressure drops across the filter. Clogged filters will lead to failure of the heater and desiccant rotor.
A service reminder alarm will activate after a set time to check the filters regularly.
NEVER operate the unit without the filters. Dust can damage the desiccant rotor and heater, and reduce the efficiency of the unit.
Annually
Inspect the rotor for damage, dust, or any other debris. Use compressed air to clean the rotor.
Direct the compressed air in the opposite direction of process air flow to prevent particles from embedding further into the desiccant rotor.
For severe levels of debris and dust, consult your Condair representative, then (optional) use water to wash the rotor.
The rotor bearings and rotor surface should also be inspected for any damages. Contact Condair for a replacement if necessary.
Bi-annually
Check the tension of the drive belt and readjust the tension as needed. The unit comes with an internal belt tension device so readjustment of the belt is only required bi-annually.
Tension: 15° deflection.
Note: The belt will stretch over time.
Do NOT over tighten the belt. This may cause damage to the drive motor.
44 Maintenance
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Task/Component Rotor Seals
Frequency Bi-annually
Heater Motors
Bi-annually Annually
Description
Inspect the seals on the rotor for damage and correct positioning. The seals
should slide along with the rotation of the rotor.
A service reminder alarm will activate after a set time to check the rotor
seals regularly.
Inspect the heater, including heating elements, for damage.
Inspect the motor and ball bearings for damage, or any unexpected sounds or
vibrations.
9.3 Resetting the Service Reminder
Reset Runtime Hours The dehumidifier alerts you when a filter or seal need to
be changed, or when the interval runtime hours for the fans and motor exceed a
factory defined threshold. The threshold values for runtime hours may be
changed, but only after consulting your Condair representative. For more
information about runtime hours, refer to “Service Level Settings” on page 39.
To reset runtime hours: Menu page > Service Level (password: 1111) > Reset
Reset Alarms Only reset applicable alarms after performing maintenance, or
when complications are resolved. For more information about alarms, refer to
“Alarms” on page 36. Reset the alarm directly if the cause of the alarm has
been fixed. Acknowledge an alarm to remove it from the pending list, if the
cause of the alarm is fixed. When an issue is acknowledged and reset (provided
the cause of the alarm is fixed), the alarm will be removed from the pending
alarm list.
To acknowledge an alarm: Menu page > Alarms > Pending Alarms > Details ( ) >
Details ( ) > Ack To reset an alarm, tap on the Reset button when viewing your
pending alarms.
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Maintenance 45
10 Troubleshooting
Troubleshooting of the Condair DA Series Desiccant Dryer must only be
performed by qualified and competent personnel. Electrical repairs must only
be performed by a licensed electrician authorized by the customer, or by
Condair service technicians. Troubleshooting the Condair DA Series Desiccant
Dryer may require the user to access the inside of the unit, to the control
cabinets, which may expose the user and equipment to hazards described in “For
your Safety” on page 9.
10.1 General Troubleshooting
Most operation warning and fault conditions are caused by improper
installation, or by not adhering to the suggested best practices for
installation of the dehumidifier and system components. Hence, a full fault
diagnosis always requires a thorough examination of the entire system (hose
connections, control systems, etc.). General guidelines for troubleshooting
are described below. For detailed troubleshooting of auxiliary system
components, refer to their respective manuals.
Nothing happens when the On/Off switch is turned On. No control circuit, or
fuse for the controls is faulty. Check the electrical components, including
control and main fuses. Internal circuit breaker has tripped. Check the
internal circuit breaker in the dehumidifier. Faulty control signal. Check the
external signal. Overheat Protection Alarm (OH2) Check the reactivation air
filters, fan, airflow, and duct obstructions. Once the issue has been resolved
the switch needs to be manually reset. Phase fault. Check main fuses, breaker,
and phase sequence.
Rotor is not moving. Drive belt is damaged, worn, or slipping. Check the belt
and ensure there are no damages, and the belt is not worn. Check the tension
of the belt, 15° deflection. The drive belt may need to be replaced. Drive
motor is faulty. Replace the gear motor. Rotor is jammed. Check the rotor and
ensure there are no obstructions at the rim of the rotor and rotor shaft.
Ensure that the rotor shaft is undamaged.
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No dry air, or no wet air volume is produced. Internal breakers are flipped.
Check the internal breakers. Filters or ducts are blocked. Check and clean the
filters. Replace them if necessary. Check the dampers and ducts, and remove
any obstructions. Phase fault. Check the main fuses and phase sequence. Faulty
fans. Check the fans, motor, and impeller for any damages or obstructions.
Dehumidification capacity reduced, or at zero. Airflow is reduced. The airflow
could be reduced due to clogged filters, leaks in the unit or seals, or
altered air volumes. Ensure that the air volumes are measured correctly, and
check dampers, openings, ducts, and filters for blockages. Replace filters if
necessary. Reduced airflow lowers the drying capacity for the space. Check the
internal and external seals, internal springs, and outside panels for air
leakage. Reactivation or process air fans are not working. Check the fans if
they are engaged. Verify contactor operation for heaters and fans. Electrical
heater is faulty, or the reactivation temperature has been changed. Check the
reactivation heater and check the fuses. Rotor is not rotating. Check the
rotor shaft and rotor rim for blockages or damage. Check the drive belt for
wear and proper tension.
Circuit breaker or fuses are faulty. Air volume is too large. Check the air
volumes and dampers. Correct as necessary. Faulty fans. Check the fans, motor,
and impeller for any damages or obstructions. Rotor is not rotating. Check the
rotor shaft and rotor rim for blockages or damage. Check the drive belt for
wear and proper tension, 15° deflection. Electrical heater is faulty, or the
reactivation temperature has been changed. Check the reactivation heater and
check the fuses. Contactor seizing. Check the reactivation heater, and check
the volume of airflow entering the reactivation side. There is a delay between
the heater stages to ensure there is no high current inrush that occurs during
startup.
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Troubleshooting 47
The reactivation air temperature leaving the unit is high (above 200 °F)
Rotor speed no correct.
Check the rotation of the rotor and ensure that there are no obstructions on
the rim or shaft of the rotor. Any blockages can impede the flow of air
through the unit and reduce its outputy.
Reactivation heat power not turned on. Check that the reactivation heaters are
turned on during the cycle.
Airflow of the regeneration air too high. Reduction in airflow reduces the air
velocity, allowing the air to remove more moisture from the rotor. This
reduction in airflow can be accomplished by adjusting the damper or using a
control signal/ potentiometer. It’s essential to ensure that the airflow is
not reduced significantly, as this can result in reduced performance or even
damage to the unit.
48 Troubleshooting
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11 Condair DA Spare Parts List
055 030
005
015
010
010
010
010
060 010
040
090
Fig. 8: Spare Parts (Refer to “Condair DA 300N-800N Parts List” on page 51 and
“Condair DA 1400N – 2400N Parts List” on page 53)
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Condair DA Spare Parts List 49
080 120
112 113 105
110 111 100 106 114 107 130 115
085
Fig. 9: Spare Parts (Refer to “Condair DA 300N-800N Parts List” on page 51 and “Condair DA 1400N – 2400N Parts List” on page 53)
50 Condair DA Spare Parts List
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Table 3: Condair DA 300N-800N Parts List
Item Item No. Description
Condair DA Model 300N 400N 600N 800N
Part Number
208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~
005 Auxiliary Switch, MCB DIN Rail
3 3 3 3 3 3 3 3 2594702
010 Breaker MCB, DIN rail, 4 Amps
1 1 1 1 1 1 1 1 2594703
Breaker MCB, DIN rail, 13 Amps
1 2 1 2 1 1 1 1 2594704
Breaker MCB, DIN rail, 15 Amps
1
2594705
Breaker MCB, DIN rail, 16 Amps
1
2594706
Breaker MCB, DIN rail, 20 Amps
1 2594707
Breaker MCB, DIN rail, 25 Amps
1
2594708
Breaker MCB, DIN rail, 32 Amps
2594709
Breaker MCB, DIN rail, 63 Amps
2594710
Breaker MCB, DIN rail, 40 Amps
1
1
2594732
015 Contactor, 80A AC1 DIN, 24VDC coil
1
2594733
Contactor, 40A AC1 DIN, 24VDC coil
1 2 1 2 1 2 1 2 2594712
020 Relay module, 24VDC DIN Rail
3 3 3 3 3 3 3 3 2594735
030 Transformer, 208/416: 12/24VAC 50VA
1
1
1
1
2595400
Transformer, 240/480: 12/24VAC 50VA
1
1
1
1 2595403
035 SP Transformer, 600/480: 240VAC 750VA 1
1
1
1
2604525
(Replaces PN: 2595352)
040 Power Supply_AC_DC Converter 24V 96W 1
1
1
1
2595406
Power Supply_AC_DC Converter 24V 40W
1
1
1
1 2595734
055 SP Fuse Kit, Dehumidifier 480V, (S2) (Replaces PN: 2601283)
1 1 1 1 1 1 1 1 2604526
060 Contactor, 18A AC1 DIN, 24VDC coil
2 2 2 2 2 2 2 2 2594711
080 DA Process Air Filter Kit
1 1 1 1 1 1 1 1 2595407
085 DA Reactive Air Filter
1 1 1 1 1 1 1 1 2594714
090 DA Series Logic Controller
1 1 1 1 1 1 1 1 2594715
100 Drive Motor w Gearbox, Capacitor
1 1 1 1 1 1 1 1 2602554
105 Capacitor, Drive Motor, Dehum
1 1 1 1 1 1 1 1 2594742
106 Belt Tensioner, Dehumidifier
1 1 1 1 1 1 1 1 2602223
107 Rotation Guard Sensor with Magnet
1 1 1 1 1 1 1 1 2602230
110 Drive Belt DA 300/400/600
111111
2602555
Drive Belt DA 800/1400/2000/2400
1 1 2594718
111 Pulley, Belt Drive DA 300/400/600
111111
2595351
Pulley, Belt Drive DA 800/1400/2000/2400
1 1 2602222
112 Peripheral Seal DA 300/400/600
111111
2602224
Peripheral Seal DA 800/1400/2000/2400
1 1 2602225
113 Clamp for Peripheral Seal 300/400/600
111111
2602226
Clamp for Peripheral Seal 800/1400/2000/2400
1 1 2602227
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Condair DA Spare Parts List 51
Item Item No. Description
114 Radial Seal DA 300/400/600 Radial Seal DA 800/1400/2000/2400
115 SP Fan, Reac. Air, DA 800 480V (S2) (Replaces PN: 2601285) SP Fan, Reac.
Air, DA 800 208V SP Fan, Reac. Air, DA 600 480V, (S2) (Replaces PN: 2601286)
SP Fan, Reac. Air, DA 600 208V SP Fan, Reac. Air, DA 400 480V, (S2) (Replaces
PN: 2594720) SP Fan, Reac. Air, DA 400 208V SP Fan, Reac. Air, DA 300 480V,
(S2) (Replaces PN: 2594731) SP Fan, Reac. Air, DA 300 208V
120 SP Fan, Poc. Air, DA 800 480V SP Fan, Poc. Air, DA 800 208V SP Fan, Poc.
Air, DA 600 480V SP Fan, Poc. Air, DA 600 208V SP Fan, Poc. Air, DA 400 480V
SP Fan, Poc. Air, DA 400 208V SP Fan, Poc. Air, DA 300 480V SP Fan, Poc. Air,
DA 300 208V
125 Rotor, Dehumidifier DA 800-2000 Rotor, Dehumidifier DA 300-600
130 SP Heater Bank, DA600-800, 500V (Replaces PN: 2601272) SP Heater Bank, DA
800, 208V SP Heater Bank, DA 600, 208V SP Heater Bank, DA 400, 500V (Replaces
PN: 2601271) SP Heater Bank, DA 300, 500V (Replaces PN: 2601270) SP Heater
Bank, DA 300-400, 208V
N/S = item not shown
208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~
Condair DA Model 300N 400N 600N 800N
Part Number
111111
2602228
1 1 2602229
1 2604530
1 1
2601288 2604529
1 1
2594720 2604528
1 1
2601387 2604527
1
2601249
1 2601251
1
2601258
1
2601253
1
2601259
1
2601254
1
2601260
1
2601255
1
2601261
1 1 2601263
111111
2601262
1
1 2604797
1
2601268
1
2601267
1
2604796
1
2604795
1
1
2601265
52 Condair DA Spare Parts List
2597586_C_EN_2311_DA_IOM
Condair DA
Table 4: Condair DA 1400N – 2400N Parts List
Item Item No. Description
Condair DA Model 1400N 2000N 2400N
Part Number
208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~
005 Auxiliary Switch, MCB DIN Rail 010 Breaker MCB, DIN rail, 4 Amps
Breaker MCB, DIN rail, 13 Amps Breaker MCB, DIN rail, 15 Amps Breaker MCB, DIN
rail, 16 Amps Breaker MCB, DIN rail, 20 Amps Breaker MCB, DIN rail, 25 Amps
Breaker MCB, DIN rail, 32 Amps Breaker MCB, DIN rail, 63 Amps Breaker MCB, DIN
rail, 40 Amps 015 Contactor, 80A AC1 DIN, 24VDC coil Contactor, 40A AC1 DIN,
24VDC coil 020 Relay module, 24VDC DIN Rail 030 Transformer, 208/416: 12/24VAC
50VA Transformer, 240/480: 12/24VAC 50VA 035 SP Transformer, 600/480: 240VAC
750VA (Replaces PN: 2595352) 040 Power Supply_AC_DC Converter 24V 96W Power
Supply_AC_DC Converter 24V 40W 055 SP Fuse Kit, Dehumidifier 480V, (S2)
(Replaces PN: 2601283) 060 Contactor, 18A AC1 DIN, 24VDC coil 080 DA Process
Air Filter Kit 085 DA Reactive Air Filter 090 DA Series Logic Controller 100
Drive Motor w Gearbox, Capacitor 105 Capacitor, Drive Motor, Dehum 106 Belt
Tensioner, Dehumidifier 107 Rotation Guard Sensor with Magnet 110 Drive Belt
DA 800/1400/2000/2400 111 Pulley, Belt Drive DA 800/1400/2000/2400 112
Peripheral Seal DA 800/1400/2000/2400 113 Clamp for Peripheral Seal
800/1400/2000/2400 114 Radial Seal DA 800/1400/2000/2400 115 SP Fan, Reac.
Air, DA 2400 480V, (S2) SP Fan, Reac. Air, DA 2000 480V, (S2) SP Fan, Reac.
Air, DA 2000 208V SP Fan, Reac. Air, DA 1400 480V, (S2) (Replaces PN: 2594719)
SP Fan, Reac. Air, DA 1400 208V
3333 1111 1111
1
1
1
1
1
1
1212
3333
1
1
1
1
1
1
1
1
1
1
1111
2222 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111 1111
1 1 1
1
3 2594702 1 2594703 1 2594704
2594705 2594706 2594707 2594708 2594709 2594710 1 2594732 2594733 2 2594712 3
2594735 2595400 1 2595403 1 2604525
2595406 1 2594734 1 2604526
2 2594711 1 2595407 1 2594714 1 2594715 1 2602554 1 2594742 1 2602223 1
2602230 1 2594718 1 2602222 1 2602225 1 2602227 1 2602229 1 2604793
2604792 2594740 2604791
2601288
Condair DA
2597586_C_EN_2311_DA_IOM
Condair DA Spare Parts List 53
Item Item No. Description
120 SP Fan, Poc. Air, DA 2400 480V SP Fan, Poc. Air, DA 2000 480V SP Fan, Poc.
Air, DA 2000 208V SP Fan, Poc. Air, DA 1400 480V SP Fan, Poc. Air, DA 1400
208V
125 Rotor, Dehumidifier DA 2400 Rotor, Dehumidifier DA 800-2000
130 SP Heater Bank, DA2400, 500V SP Heater Bank, DA1400-2000, 500V (Replaces
PN: 2601282) SP Heater Bank, DA 1400-2000, 208V
N/S = item not shown
Condair DA Model 1400N 2000N 2400N
Part Number
208V/3~ 480V/3~ 208V/3~ 480V/3~ 208V/3~ 480V/3~
1 1 1 1
1111
1
1
1
1
1 2604794 2604800 2601256 2601250 2601257
1 2601264 2601262
1 2604799 2604798
2601269
11.1
Obtaining Spare Parts
Obtain additional spare parts from your local Condair Agent, or through
www.CondairParts.com.
54 Condair DA Spare Parts List
2597586_C_EN_2311_DA_IOM
Condair DA
12 Commissioning
12.1 General
The Condair DA Series Desiccant Dryer must be commissioned and operated only
by personnel who are adequately qualified and familiar with the Condair DA
Series Desiccant Dryer. It is the customer’s responsibility to verify the
qualifications of personnel.
12.2 First-time Commissioning
The unit must always be commissioned for the first time by a service
technician from your Condair representative, or by personnel who are well
trained and authorized by the customer. For this reason, this manual only
provides an outline, and not the details of the commissioning protocol. On
initial start-up, the following steps should be taken in this order: 1. Ensure
that the external isolation switch is isolating the unit from the mains and
that the main switch
on the desiccant dryer is set in the OFF position. 2. Open the service panel
of the desiccant dryer and ensure that no foreign objects are left inside the
unit or in the electrical compartment. 3. Ensure that the process and
reactivation air dampers are open, and that ducts are clean and free
of blockages. 4. Check that air filters are installed and clean. 5. Access the
fan chambers by removing the panels/safety grids, rotate the fan impellers by
hand and
make sure they can move freely. After checking the fans, mount the service
panels/safety grids back on the unit. 6. Ensure that the mains supply fuse is
suitably rated. 7. Mount the main service panel on the desiccant dryer. 8.
Connect the desiccant dryer to the main electrical supply by turning the
external isolation switch to ON, and check all three phases are live. Terminal
L1, L2, L3 in the desiccant dryer. 9. Check to see that the lamp on the PLC
called STAND BY is lighting up, but that the machine doesn’t start. 10. Start
the desiccant dryer for a short moment (approx. 1 minute) by turning the
switch on the PLC to the ON respectively MAN position or by pressing “unit on”
and “Manuel / Auto” on the PLC. Check that there is no apparent vibration
while the fans are ramping up to full speed. Also check that the green
operation lamp on the PLC lights up. 11. Stop the desiccant dryer by turning
the ON/OFF switch on the PLC to OFF. 12. The reactivation air fan will
continue to work for 6 minutes after the unit has been turned OFF on the PLC.
13. The desiccant dryer is now ready for operation. 14. Start the desiccant
dryer and check that the unit is operating at the correct air volumes and air
pressures by taking measurements in the dry air and wet air ducts. 15. If
requested check the dehumidification performance by measuring humidity in the
dry air outlet from the desiccant dryer. Compare the result with the
performance charts. 16. The dehumidifier is now ready for operation.
Condair DA
2597586_C_EN_2311_DA_IOM
Commissioning 55
Ensure the following: · Dampers (in reactivation air and process air ducts)
are open. · Ducts are clean and unobstructed. · There are no foreign objects
in the unit (including electrical cabinet). · Air filters are clean and
installed properly. · Fans can rotate freely. Fans can be accessed by removing
the safety panels from the fan housing.
Ensure that the safety panels are reinstalled. · Rotor belt tension is at 15°
deflection. The belt will stretch over time, so tension should be adjusted
during maintenance. · Check the pressure at the inlet and outlet ducts of
process air side. · Check rotation direction of the rotor (wiring capacity
incorrectly can reverse the rotation). · Ensure that the service hatch for the
reactivation air section is properly sealed to prevent any air
leakage. · Check the power consumption of the overall unit using an amp clamp.
The power consumption value
should match the unit specification label. · Check to confirm that the air
entering the unit is not contaminated or polluted. · Inspect the area
underneath the rotor for any powder duct. If any is a present, please use a
brush
to remove it from the inside of the unit.
56 Commissioning
2597586_C_EN_2311_DA_IOM
Condair DA
13 Decommissioning
13.1 General
If the Condair DA Series Desiccant Dryer needs to be replaced or removed from
service for disposal, strictly follow the instructions in this section.
Personnel Qualifications All decommissioning work must be performed only by a
qualified service technician authorized by the customer. It is the customer’s
responsibility to verify proper qualifications of the personnel. Safety Refer
to “For your Safety” on page 9 .
13.2
Removing Unit from Service
Remove the unit from service for disposal, or long-term storage, as follows.
Use a qualified service technician. 1. Disconnect the humidifier from the
power source. 2. Disconnect the control signal inputs (including any power and
security loop connections) from the
terminal strips in the humidifier. 3. Remove the Condair DA Series Desiccant
Dryer from its mounting surface. 4. If the unit is to be disposed, refer to
“Disposing or Recycling the Unit” below.
13.3
Disposing or Recycling the Unit
The Condair DA Series Desiccant Dryer and its components must NOT be disposed
in domestic waste, and should be brought to an authorized collection point. If
required, dispose in accordance with local regulations at authorized
collection facilities. If you have any questions, please contact the
appropriate local authorities, or your local Condair representative.
Condair DA
2597586_C_EN_2311_DA_IOM
Decommissioning 57
14 Appendix A
14.1 Appendix A-1: Installation Checklist
Mounting Unit installed in a suitable location? Refer to “Location
Requirements” on page 19. Unit installed with suitable clearances? Refer to
“Clearance Requirements” on page 20. Mounting surface is stable and capable of
supporting the full operating weight of the unit? Refer to
“Technical Specification” on page 16. Unit is level? Unit is fastened
securely?
Electrical Connection Power supply meet the voltage and current requirements
shown on the specification label? Refer to
“Model Designation” on page 13. All cables fastened securely? All electrical
connections meet applicable codes? Electrical installation meet the applicable
national and local codes?
58 Appendix A
2597586_C_EN_2311_DA_IOM
Condair DA
14.2 Appendix A-2: Maintenance Checklist
Follow all safety precautions. Refer to “For your Safety” on page 9. Shut down
the unit before performing maintenance procedures. Refer to “Shutting Down the
Unit” on page 43. Do NOT ignore alarms. Refer to “Troubleshooting” on page 46.
Refer to “Maintenance List” on page 44 and “Maintenance Procedures” for
descriptions on maintenance procedures.
Table 5: Maintenance Log
Component Frequency Dates
Last Performed (DD/MM/YY) and Initials
Filters
Monthly or as needed
Rotor (and bearings)
Annually – contact Condair representative
Rotor Drive Belt
Bi-annually
Rotor Seals Bi-annually
Heater
Bi-annually – visually inspect the heater. Replace if necessary. Contact Condair representative.
Motors
Annually
Comments:
Condair DA
2597586_C_EN_2311_DA_IOM
Appendix A 59
Condair DA
2597586_C_EN_2311_DA_IOM
60 Appendix A
Abb. 1: Wiring Diagram for DA Series Dehumidifiers 208V – Refer to the wiring diagram on the actual unit
Ext. Int.
L1 L2 L3
Ext. Int.
12 3 6
4 22 6 4 2
sss
F1
21 5 3 1
5 22 6 4
2
F2
21 5 3 1
sss sss
F3
22
21
6
5
4
3
2
1
26 27
28
30
34
15
35 36
37
41
11 9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+V 0V
I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1 I0
Degson EDGK-5.0 Terminal Block #1
Degson EDGK-5.0 Terminal Block #2
+VO 0V
O7 O6 O5 O4 O3 O2 O1 O0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
29 31
32
84 38 40 42 43 44 45
33
14 12
18 17 16
–
SMPS 24VDC L1 N
83
13C 10C
SS
13B 10B
25
S
25A
19 20
21
X1 X4 X2 Tx – 25 480-240 J1 H1 H2 X3
X4 X1
Tx – 23 480/208-24
H1 H4
13 10
13A 10A
78
49 51A
Over Temp Safety
70
50 11
14
A1
A2
Rk1 57 59
Assist Relay
See Separate Heater Bank Wiring
A2 A1
1/L1 3/L2 5/L3
K1
2/T1 4/T2 6/T3
51 11
14
60
Desiccant Side Heater Bank
A1
A2
RK2
58
52 Assist Relay
A2 A1
1/L1 3/L2 5/L3
K2
2/T1 4/T2 6/T3
46 47 48
Fan Side Heater Bank
11
14
64 67
55
A1
A2
Fault Relay
11
14
63
A1
A2
56
Gear Motor Relay
54
A2
A1
1/L1 3/L2 5/L3
K4
2/T1 4/T2 6/T3
61 65 68
PA Fan
82
Contactor
22 23 24
53
A2
A1
1/L1 3/L2 5/L3
K3
2/T1 4/T2 6/T3
RA Fan Contactor
62
66 69
84 85
71 72
18 19 15 25
14 24 13 23 22
J3
20
21
89 90
88
11
} Constant Speed
J6 Variable Speed
RA Fan Modulation Control
RA Fan Input
10
81 80 79 78
77 76 75
3
4
5
6
7
8
9
Remote Fault Indication (N.0.) (24 V, 1 Amp Max.)
+24V
0-10 V Humidity Controller
GND
Signal
RH (0-10V) Humidity Transducer
GND
Signal
2
74
On/Off Humidity
73
Controller Input
Int. Ext. 1
Emergency Stop or Jumper (N.C.)
J2
28
29
Rotor Sensor (N.O.)
12 11
14
A1
A2
7 8 9
C1 0.5uF
J5 4 5
J2
35
36
86
87 1 2
J2
30
31
Red White
Blue
M Rotor
KL1 L3 L2 L1 PE
KL3
GND
0-10V +10V
KL2
COM NC
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (12)
DA-300-1400 DA-2000-2400 480VAC (EBM) 480VAC (Z-A)
Black Blue
Gr/Ye
Blue Yellow
Red
L N
PE
GND 0-10V +10V
White2 White1
COM NC
DA-300-800 208VAC (EBM)
Process Air Fan
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (14)
EC-M
DA-1400-2000 208VAC (Z-A)
KL1 L3 L2 L1 PE
KL3
GND 0-10V +10V
KL2
COM NC
DA-300-2400 480VAC (EBM)
Blue Black Gr/Ye
Blue Yellow
Red
N L PE
GND 0-10V +10V
White2 White1
COM NC
DA-300-2000 208VAC (EBM)
EC-M
Reactive Air Fan
DA Series Dehumidifier
Wiring Diagram (with modulation)
2595740 Rev. H
Oct 10, 2023
12
Int. Ext.
14.3 Appendix A-3: Wiring Diagrams
Appendix A 61
2597586_C_EN_2311_DA_IOM
Condair DA
Abb. 2: Wiring Diagram DA Series Dehumidifiers 480V (S2) – Refer to the wiring diagram on the actual unit
Ext. Int.
L1 L2 L3
Ext. Int.
12 3 6
4 22 6 4 2
sss
F1
21 5 3 1
5 22 6 4
2
F2
21 5 3 1
26 27
28
30
34
15
35 36
37
41
11 9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+V 0V
I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1 I0
Degson EDGK-5.0 Terminal Block #1
Degson EDGK-5.0 Terminal Block #2
+VO 0V
O7 O6 O5 O4 O3 O2 O1 O0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
29 31
32
84 38 40 42 43 44 45
33
14 12
18 17 16
–
SMPS 24VDC L1 N
83
10 13
92 49 51A
Over Temp Safety
70
50 11
14
A1
A2
Rk1 57 59
Assist Relay
See Separate Heater Bank Wiring
A2 A1
1/L1 3/L2 5/L3
K1
2/T1 4/T2 6/T3
51 11
14
60
Desiccant Side Heater Bank
A1
A2
RK2
58
52 Assist Relay
A2
A1
1/L1 3/L2 5/L3
K2
2/T1 4/T2 6/T3
46 47 48
Fan Side Heater Bank
11
14
64 67
55
A1
A2
Fault Relay
25 X4 X1 Tx – 23 480/208-24 H1 H4
78
S
19 20 21
25A
11
14
63
A1
A2
56
Gear Motor Relay
54
A2
A1
1/L1 3/L2 5/L3
K4
2/T1 4/T2 6/T3
61 65 68
PA Fan
82
Contactor
sss sss
F3
22
21
6
5
4
3
2
1
22 23
480-240 Step-down transformer All DA 480 VAC units
22a
X2 X3
22b
23a
H1
X1
23b
H2
X4
Tx 480-240
1/L1 3/L2 5/L3
K3
2/T1 4/T2 6/T3
53
A2 A1
62 66
RA Fan Contactor
84
85
71 72
18 19 15 25
14 24 13 23 22
J3
20
21
89 90
88
11
} Constant Speed
J6 Variable Speed
RA Fan Modulation Control
RA Fan Input
10
81 80 79 78
77 76 75
3
4
5
6
7
8
9
Remote Fault Indication (N.0.) (24 V, 1 Amp Max.)
+24V
0-10 V Humidity Controller
GND
Signal
RH (0-10V) Humidity Transducer
GND
Signal
2
74
On/Off Humidity
73
Controller Input
Int. Ext. 1
Emergency Stop or Jumper (N.C.)
J2
28
29
Rotor Sensor (N.O.)
7 8 9
C1 0.5uF
J5 4 5
J2
35
36
Red White
Blue
M Rotor
KL1 L3 L2 L1 PE
KL3
GND
0-10V +10V
KL2
COM NC
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (14)
DA-300-1400 DA-2000-2400 480VAC (EBM) 480VAC (Z-A)
Black Blue
Gr/Ye
Blue Yellow
Red
L N
PE
GND 0-10V +10V
White2 White1
COM NC
DA-300-800 208VAC (EBM)
Process Air Fan
L3 L2 L1
D1 GND
E1 10V 24V
COM (11) NC (14)
EC-M
DA-1400-2000 208VAC (Z-A)
12 11
14
A1
A2
86
87 1 2
J2
30
31
Black Blue
Gr/Ye
Blue Yellow
Red
L N
PE
GND 0-10V +10V
White2 White1
COM NC
DA-300-2000 208VAC DA-300-2400 480VAC
EC-M
Reactive Air Fan
DA Series Dehumidifier,(S2)
Wiring Diagram (with modulation)
2604850 Rev. C
Oct 23, 2023
12
Int. Ext.
500 VAC Dehumidifier Heater Bank Wiring
(Supplement to Wiring Diagram 2604850)
L1
L1
L2
L2
L3
L3
A1(+) 1 3 5
K1
A2( – ) 2 4 6
A1(+) 1 3 5
K2
A2( – ) 2 4 6
Desiccant Side Desiccant Side
View A
D-2 Heater
L1 1
L2 2
L3 3
L1 4
L3 5
L2 6
D-3 Heater
1
L1
2
L2
3
L3
4
L1
5
L3
L2 6
DeRsoictcoar nt
A
F-2 Heater
L1 1
L2 2
L3 3
L1 4
L2
5
L3 6
F-3 Heater
L1 1
L2 2
L3 3
L1 4
L2
5
L3 6
Heaters Omitted on 2604467 And 2604468
F-1 Heater
1
L3
L2 2
L1 3
L3 4
L1 5
L2 6
F-4 Heater
1
L3
L2 2
L1 3
L3 4
L2 5
L1 6
Heater Omitted on 2604469
View B
D-1 Heater
L3 1
L2 2
L1 3
L3 4
L1
5
L2 6
D-4 Heater
L3 1
L2 2
L1 3
L3 4
L2
5
L1 6
Heater Omitted on 2604467 And 2604469
Heaters Omitted on 2604466
Item
2604466
2604467
2604468
2604469
2604470
Heater Bank 500V, Heater Bank 500V, Heater Bank 500V, Heater Bank 500V, Heater Bank 500V,
Wired, DA300
Wired, DA400
Wired, DA600 -800 Wired, DA1400 -2000 Wired, DA2400
D-1
–
PTC Heater
PTC Heater
PTC Heater
PTC Heater
B
D-2
PTC Heater
D-3
PTC Heater
PTC Heater PTC Heater
PTC Heater PTC Heater
PTC Heater PTC Heater
PTC Heater PTC Heater
D-4
–
–
PTC Heater
–
PTC Heater
F-1
–
–
–
PTC Heater
PTC Heater
F-2
–
–
–
PTC Heater
PTC Heater
F-3
–
–
–
PTC Heater
PTC Heater
F-4
–
–
–
–
PTC Heater
DA 500VAC HEATER BANK,(S2) Wiring Diagram
2604480 Revision: B
Date: 02/21/2023
.
Fig. 10: DA 500VAC (S2) Heater Bank Wiring Diagram
62 Appendix A
2597586_C_EN_2311_DA_IOM
Condair DA
208 VAC Dehumidifier Heater Bank Wiring
(Supplement to Wiring Diagram 2595740)
L1
L1
L2
L2
L3
L3
A1(+) 1 3 5
K1
A2( – ) 2 4 6
A1(+) 1 3 5
K2
A2( – ) 2 4 6
Desiccant Side Desiccant Side
View A
D-2 Heater
1
L1
L2 2
L3 3
L1 4
L3 5
L2 6
D-3 Heater
L1 1
2
L2
3
L3
4
L1
5
L3
L2 6
DeRsoictcoar nt
A
F-2 Heater
L1 1
L2 2
L3 3
L1 4
L2
5
L3 6
F-3 Heater
L1 1
L2 2
L3 3
L1 4
L2
5
L3 6
F-1 Heater
L3 1
L2 2
L1 3
L3 4
L1 5
L2 6
F-4 Heater
L3 1
L2 2
3
L1
L3 4
L2 5
L1 6
View B
D-1 Heater
L3 1
L2 2
L1 3
L3 4
L1
5
L2 6
D-4 Heater
L3 1
L2 2
L1 3
L3 4
L2
5
L1 6
Heaters Omitted on 2595401 And 2595404
Heater Omitted on 2595420
Heater Omitted on 2595401 And 2595420
DA 300/208VDA 400/208V DA 600/208V
DA 800/208V
DA 1400/48D0VA 2000/480V
Item Number
2595401
2595404
2595420
2595402
B
D-1 Heater PTC Heater D-2 Heater PTC Heater
PTC Heater PTC Heater
PTC Heater PTC Heater
PTC Heater PTC Heater
_ D-3 Heater PTC Heater
D-4 Heater
F-1 Heater
_
F-2 Heater
_
F-3 Heater
_
F-4 Heater
_
PTC Heater
PTC Heater
PTC Heater
PTC Heater PTC Heater PTC Heater
PTC Heater PTC Heater PTC Heater PTC Heater PTC Heater PTC Heater
DA 208VAC HEATER BANK Wiring Diagram
2597584 Revision: B
Date: 02/21/2023
Fig. 11: DA 208VAC Heater Bank Wiring Diagram
Condair DA
2597586_C_EN_2311_DA_IOM
Appendix A 63
14.4 Appendix A-4: Communication
14.4.1 Modbus
The Condair DA Desiccant Dryer can be ordered with optional Modbus TCP/IP or
Modbus RS485 network cards installed in the unit’s PLC. Connections can be
made with an Ethernet (RJ45) or RJ11 cable.
Note: The Condair DA Desiccant Dryer supports Modbus RTU with RS 232
interfaces.
Table 6: RS 232 Pin Interfaces
Pin # RS 232 (Port 1) Notes
1
Not connected
2
0V
Signals are related to the controller’s 0V; the same 0 V is used by the power
3
TDX signal
supply. The serial port is not isolated. If the controller is used with a non- isolated
4
RDX signal
external device, avoid potential voltage that exceeds ± 10V.
5
0V
Maximum cable length 50 ft (15 m).
6
Not connected
14.4.1.1 RS485 Connection
Connect using RJ11 connector provided (Blue Wire: RS485 A+, White/Blue: RS485 B-). By default, the RS485 signals are terminated by two wire ferrules coming from the RJ11 connector. Note: RJ45 connector can be used instead.
Table 7: RS 485 Connection
Wire RS485 A+ RS485 B-
Color Blue White/Blue
Notes
The ground is connected in the shielding of the RJ11 twisted pair connector.
Use a shielded twisted pair wire. Use a 2-wire splicing connector to connect
the two ferrules from RJ11 (or other similar connector) to extend the cables.
Maximum cable length 4000 ft (1200 m).
64 Appendix A
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Condair DA
PLC Software Configuration 1. Power up the PLC. 2. Navigate to Menu >
Communication Setup 3. Enter the user level password: 4498 4. Enter a Modbus
slave ID. The default is 35. 5. Navigate to RS485 settings. Select one of the
following serial communication options.
9600 Baud, 8 bits, No Parity, 1 Stop Bit 9600 Baud, 8 bits, Even Parity, 1
Stop Bit 19200 Baud, 8 bits, No Parity, 1 Stop Bit 19200 Baud, 8 bits,
Even Parity, 1 Stop Bit 57600 Baud, 8 bits, No Parity, 1 Stop Bit 57600
Baud, 8 bits, Even Parity, 1 Stop Bit 6. Enter the Modbus Network ID (range is
0 to 999). 7. Press SAVE
14.4.2 TCP/IP Network Settings
Connect a CAT V RJ45 Ethernet cable (shielded twisted pair) to Port 2 on the
PLC. 1. Power up the PLC 2. Navigate to Menu > Communication Setup 3. Enter
the user level password: 4498 4. The display will note the installation of an
Ethernet card. Navigate to Modbus TCP/IP settings. 5. Enter the IP address,
default gateway, and subnet mask. 6. Validate the network connection.
a. Connect an RJ45 Ethernet cable from the PLC port to a computer. b. Open the
command prompt terminal (enter “cmd” from the start menu). c. Enter “ping” and
the IP address you created in step 5.
Ex. > ping 192.168.0.150 d. If there are lost packets, there is no connection.
Check the Ethernet connection and IP address
and try again.
Condair DA
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Appendix A 65
14.4.3 Modbus Datapoints
Table 8: Analog and Misc. Datapoints
Holding Register
70 76
9
RS232, ID: 35 Bitrate: 9600, Parity: None, Stop bits: 1
Coil Status
Read/ Write
INFO
Text / Info
Analog inputs
R
Humidity sensor
R
0-10V dehumidification control
Analog setpoint
R/W
Humidity setpoint for humidity
sensor
Misc
2
R/W
1=On Unit on/off
3
R
1=On Urgent alarm
4
R
1=On Non urgent alarm
13
R/W
1=On Cooling time react. Air fan
15
R/W
1=Auto Unit automatic/manual mode
27
R/W
1=On Continuous process air fan
MBA MBE Format Var.
% RH
0
VDC
0.0
% RH
50
100
10.0
.
–
1/0
–
–
–
1/0
–
–
–
1/0
–
–
–
1/0
–
–
–
1/0
–
–
–
1/0
–
–
–
Table 9: Input and Output Datapoints
Holding Register
RS232, ID: 35 Bitrate: 9600, Parity: None, Stop bits: 1
Coil Status
Read/ Write
INFO
Text / Info
MBA MBE Format Var.
Digital inputs (Read)
24576
R
1=On Rotation guard sensor
1/0
–
–
–
24577
R
1=On Circuit breaker, react. Heater
1/0
–
–
–
24578
R
1=On Circuit breaker, process air fan
1/0
–
–
–
24579
R
1=On Circuit breaker, react. Air fan/Drive
1/0
–
–
—
motor
24580
R
1=On Overheating protection OH2
1/0
–
–
–
24581
R
0=On Proc. air fan, thermal protection/
1/0
–
–
—
alarm
24582
R
1=On Filter guard (option)
1/0
–
–
–
24583
R
1=On External start/Humidistat
1/0
–
–
–
24584
R
0=On External stop/Stop button
1/0
–
–
–
24585
R
0=On React. Air fan, thermal protection/
1/0
–
–
–
alarm
Digital outputs (Read)
16384
R
1=On React. Heater step 1
1/0
–
–
–
16385
R
1=On Process air fan
1/0
–
–
–
16386
R
1=On React. Air fan
1/0
–
–
–
16387
R
1=On Drive motor
1/0
–
–
–
16388
R
1=On Alarm indication
1/0
–
–
–
16389
R
1=On React. Heater step 2
1/0
–
–
–
16390
R
1=On React. air fan 10V control relay
1/0
–
–
–
66 Appendix A
2597586_C_EN_2311_DA_IOM
Condair DA
14.4.4 BACnet
The Condair DA Desiccant Dryer can be ordered with optional FieldServer
gateway card factory installed to translate DA Desiccant Dryers Modbus TCP
(fixed IP) into four optional protocols with configurable IP, node and other
settings.
14.4.4.1 Network Settings When factory installed, CAT 5 Ethernet cable is
connected from the PLC to gateway at ETH1 port. Connect a CAT 5 Ethernet cable
to ETH2 on the gateway module which will be connected to the Building
Management System (BMS) 1. Power up the unit. 2. On the PLC User Interface
navigate to Menu > Communication Setup. 3. Enter the user level password: 4498
4. The display will note the installation of an Ethernet card. Navigate to
Modbus TCP/IP settings. 5. Note the default PLC IP address, gateway, subnet
mask and the Modbus network ID. 6. Use a PC to validate the network
connection.
a. Connect an RJ45 Ethernet cable from gateway port (ETH2) to a computer. b.
Use network settings to configure the computer’s ethernet IP settings to
connect to the Gateway. c. Configure PC address to same subnet as IP address
of gateway (see label on gateway), set
default gateway to IP address of the gateway.
Note: Above image shows network settings for Windows 7
Condair DA
2597586_C_EN_2311_DA_IOM
Appendix B 67
d. Using a web browser enter the IP address and login with the following
credentials.
Username: admin Password: See label at the gateway (or scan QR code)
14.4.4.2 Configure the Gateway
· Under the Configuration Parameters, select/change the communication for
either IP or MSTP network:
BACnet IP · Select “1” in Protocol Selector · Click Submit · Click System Restart · Select/Adjust Desired Parameters · Click Submit · Click System Restart
BACnet MSTP · Select “2” in Protocol Selector · Click Submit · Click System Restart · Select/Adjust Desired Parameters · Click Submit · Click System Restart
· Add DA Device – Under Active Profiles Click
68 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
· Enter values below depending on type of connection (BACnet IP or BACnet MSTP):
BACnet IP
BACnet MSTP
· Enter Node ID as 1
· Enter Node ID: Enter the PLC’s Modbus
· Select BAC_IP_DA
Network ID that was noted above
· Parameters
· Select BAC_MSTP_NA
Ip_address: 192.168.0.150
· Click Submit
TCP_id:
Enter the PLC’s Modbus Net- · Click System Restart work ID that was noted above
· Click System Restart
Example after entering values (example is for BACnet IP)
· The gateway configuration is complete.
14.4.4.3 Changing IP Addresses/ Troubleshooting · Connect computer and login
to gateway as described in point 6 above. · Click Diagnostics & Debugging ·
Click Setup > Network Settings
Condair DA
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Appendix B 69
· In Network settings you can assign an IP address for ETH1 (For PLC and
Gateway Network) or ETH2 (For PC or BACnet network), set up a rule for the
output ethernet port.
· Set ETH1 IP address to connect to PLC or set ETH2 IP address to connect to
the laptop (BMS).
· Default routing priority is set to ETH2 and should not be changed. In case
of communication issues check that this is set correctly.
70 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
BACnet Object Table
Object name
Analog Inputs ANALOG INPUT 0 ANALOG INPUT 1
Analog Outputs ANALOG OUTPUT 0
Digital Value BINARY VALUE 0 BINARY VALUE 1 BINARY VALUE 2
BINARY VALUE 3
Digital Inputs BINARY INPUT 0 BINARY INPUT 1 BINARY INPUT 2 BINARY INPUT 3
BINARY INPUT 4
BINARY INPUT 5
BINARY INPUT 6
BINARY INPUT 7
BINARY INPUT 8 BINARY INPUT 9 BINARY INPUT 10 BINARY INPUT 11
BINARY INPUT 12 BINARY INPUT 13 BINARY INPUT 14 BINARY INPUT 15 BINARY INPUT
16 BINARY INPUT 17 BINARY INPUT 18
Object ID Read/Write Text / Info
Value
001
R
Humidity sensor
0.0 100.0 % rH
002
R
0-10V Dehum Control
0.0 10.0 V
003
R/W
Humidity Setpoint
50.0 % rH
004
R/W
Unit on/off
1=On
007
R
Cooling time react. Air fan 1=On
008
R
Unit automatic/manual 1=On
mode
009
R/W
Continuous process air 1=On
fan
005
R
Urgent Alarm
1=On
006
R
Non-Urgent Alarm
1=On
010
R
Rotation Guard Sensor 1=On
011
R
Circuit Brk React Heater 1=On
012
R
Circuit Brk Process Air 1=On
Fan
013
R
Circuit Brk React Air Fan/ 1=On
Drive Mtr
014
R
Overheating Protection 1=On
OH2
015
R
Proc Air Fan Thermal
0=On
Protect Alarm
016
R
Filter Guard
1=On
017
R
External Start Humidistat 1=On
018
R
External Stop Stop Button 0=On
019
R
React Air Fan Thermal 0=On
Protect Alarm
020
R
React Heater Step 1
1=On
021
R
Process Air Fan
1=On
022
R
React Air Fan
1=On
023
R
Driver Motor
1=On
024
R
Alarm Indication
1=On
025
R
React Heater Step 2
1=On
026
R
React Air Fan 10V Control 1=On
Relay
Condair DA
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Appendix B 71
15 Appendix B: Additional instructions pre- and postcooling modules
15.1 Before you begin
The following additional instructions provides guidelines for the
installation, operation, and maintenance of Condair-supplied pre- and post-
cooling modules when paired with Condair DA Series desiccant dryers to ensure
proper performance and longevity. Please observe and comply with all
information and safety instructions contained in this sections, as well as all
relevant documentation of components of the installed dehumidification system.
If you have additional questions, please contact your Condair representative.
They will be glad to assist you.
15.2 Notes on the additional instructions
15.2.1
Limitation
These additional instructions are restricted to the installation, operation,
and maintenance of Condair supplied pre- and post-cooling modules for use with
Condair DA desiccant dryers and is meant for well-trained personnel being
sufficiently qualified for their respective work.
15.2.2 For your safety
General
Every person, who is in charge of the installation and maintenance of the
cooling modules must have read and understood these additional instructions
before carrying out any work.
Knowing and understanding the contents of these additional instructions is a
basic requirement for protecting personnel against any kind of danger,
preventing faulty operation, and operating the equipment safely and correctly.
Qualification of personnel
The installation and maintenance of the cooling modules may only be carried
out by a qualified party or individual who is authorized by the customer.
It is assumed that all persons working with the cooling modules are familiar
and comply with the appropriate regulations on work safety and the prevention
of accidents.
Cold-water supply lines must only be designed and executed by qualified
personnel considering the respective relevant local regulations.
Intended use of the pre- and post-cooling modules
The cooling modules are intended exclusively for use with the corresponding
Condair DA desiccant dryer for dehumidification processes within specified
operating conditions. Any other type of application, without the written
consent of Condair, is considered as not conforming with the intended purpose
and may lead to hazardous operation of the cooling modules and will void any
warranty. Operation of the equipment in the intended manner requires that all
the information contained in this installation and operation manual is
observed (in particular the safety instructions).
72 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
WARNING!
Protective equipment such as safety glasses, steel toe boots, and gloves are
recommended during the installation and routine maintenance of the cooling
module.
WARNING!
The cooling coil fins have sharp edges. Always wear protective gloves when
working with coils.
15.3 Receiving and Storage
15.3.1 Inspection
Inspect the received shipment as follows: · Inspect the shipping box for
damage. Report any shipping box damage to the shipping company
without delay. · Check the received items against the packing slip to ensure
that all items have been delivered. Report
any shortages to your Condair representative within 48 hours of receipt of the
items. Condair does not accept responsibility for any material shortages
beyond this period. · Unpack the items and check for any damage. If items are
damaged, notify the shipping company immediately. · The standard delivery
includes the cooling modules as ordered packed in cardboard boxes. Please note
that Condair does not supply as part of the delivery of the cooling module,
the cooling coil valves, temperature sensor, and controller required to
operate the coil. Please contact your Condair representative for the size of
valve that will be required for your specific site operation. · Verify the
specification label of the product to ensure that it is suitable for your
installation.
15.3.2 Storage and transportation
Storing Until installation, store the cooling modules in their original
packaging in a protected area meeting the following requirements: Room
temperature: 41 … 104 °F (5 … 40 °C) Room humidity: 10 … 75 %RH
Transportation For optimum protection always transport the cooling modules in
their original packaging and use appropriate lifting/transporting devices.
Packaging Keep the original packaging of the components for later use. In case
you wish to dispose of the packaging, observe the local regulations on waste
disposal. Please recycle packaging where possible.
Condair DA
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Appendix B 73
15.4 Product Overview
15.4.1 General description
Condair DA Series desiccant dryers can be supplied with chilled water pre-and
post-cooling modules to improve the dehumidification process. These are fluid
coils consisting of copper tubes and water connections with aluminum fins
mounted in a stainless-steel casing and supplied with a drain pan. Condair
supplies cooling modules that have been optimized for operation with the
corresponding DA desiccant dryer. Refer to Section 15.4.3 for more
information.
15.4.2 Functional description
Chilled water enters the cooling module through the water inlet located at the
bottom of the cooling module. As it flows through the coil tubes, it picks up
the heat of the air moving across the fins. The water leaves the coil through
the return water connection at the top of the cooling module. All Condair
coils are sized for operation with chilled water at a supply temperature of 43
°F (6 °C) and a return temperature of 53 °F (13 °C). If your site’s chilled
water system has different supply and return temperatures, please contact
Condair before installation to verify and certify the performance of the
cooling module.
15.4.2.1 Pre-cooling module
The pre-cooling module is installed upstream of the dehumidifier and will
reduce the process air moisture content before it enters the desiccant dryer.
The air leaving the pre-cooling coil is drier, cooler and is at or very close
to saturation (100 %RH). This latent cooling process creates condensate that
is collected in the drain pan of the cooling module. Note: Any ductwork
installed after the pre-cooling module and the dehumidifier must incorporate a
suitable condensate trap.
15.4.2.2 Post-cooling module
The post-cooling module is installed downstream of the dehumidifier and its
sole purpose is to remove sensible heat to lower the temperature of the supply
air to meet the desired room air temperature. Note: The post-cooling coil is
intended to adjust the temperature of the air only. The coil must not generate
condensate, otherwise the dehumidification process will not be controlled
accurately.
74 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
Damper for Process Air
Pre-cool Module Process Air In
DA desiccant dryer
Post-cool Module
Dry Air Out
Wet Air Out
Reactivation Air In
Damper for Reactivation Air
Fig. 12: DA desiccant dryer and cooling modules functional diagram
Process Air Flow
Process Air Outlet
Post Cooling
Coil Connections
Condair DA ***N Dehumidifier
Rear Side Elevation
VCD
Pre Cooling
Coil Connections
Fig. 13: Installation layout of the cooling modules with the DA desiccant dryer
Process Air Inlet
Condair DA
2597586_C_EN_2311_DA_IOM
Appendix B 75
15.4.3 Product specifications 15.4.3.1 Pre-cooling module
(1) 3/4″ DRAIN PIPE
F
(2) 1-1/2″ MPT STEEL
E
CONNECTIONS
RETURN D
AIR FLOW
(1) 3/8″ MPT STEEL DRAIN SUPPLY
HEADER END
B
C
A
RETURN END
Fig. 14: Pre-cooling module drawing
Table 10: Condair DA Series pre-cooling modules
DA model
DA 300N DA 400N DA 600N DA 800N DA 1400N DA 2000N DA 2400N
Max. cooling capacity kW
7.0 12.0 17.0 17.0 34.0 34.0 48.0
Pre-cooling modules
Height Length Length Depth
(A)
(B)
(C)
(D)
In
In
In
In
Dept
(E) In
Dept
(F) In
29.31 22
3.5
29.31 22
3.5
29.31 22
3.5
29.31 22
3.5
29.31 22
3.5
42.31 35
3.5
42.31 35
3.5
1
13.19 15.06
1
13.19 15.06
1
13.19 15.06
1
14.19 16.06
1
16.69 18.56
1
15.19 17.06
1
15.69 17.56
MPT/ Actual OD MPT / Actual OD
Supply 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9
Return 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9
76 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
15.4.3.2 Post-cooling module
(1) 3/4″ DRAIN PIPE
F
(2) 1-1/2″ MPT STEEL
E
CONNECTIONS
RETURN D
AIR FLOW
(1) 3/8″ MPT STEEL DRAIN SUPPLY
HEADER END
B
C
A
RETURN END
Fig. 15: Post-cooling module drawing
Table 11: Condair DA Series post-cooling modules
DA model
DA 300N DA 300N DA 400N DA 600N DA 800N DA 1400N DA 2000N DA 2400N
Max cooling capacity kW
2.3 11.0 11.0 15.0 21.0 36.0 50.0 56.0
Post-cool modules
Height Length Length Depth
(A)
(B)
(C)
(D)
In
In
In
In
Dept ( E) In
Dept
(F) In
22.31 14
3.5
31.31 24
3.5
31.31 24
3.5
31.31 24
3.5
31.31 24
3.5
39.31 32
3.5
42.31 35
3.5
42.31 35
3.5
1
13.19 15.06
1
13.19 15.06
1
13.19 15.06
1
13.19 15.06
1
13.19 16.06
1
13.19 18.56
1
13.19 17.06
1
13.19 17.56
MPT/ Actual OD MPT / Actual OD
Supply 1.5 / 1.9 1.5/ 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9
Return 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9 1.5 / 1.9
Condair DA
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Appendix B 77
15.5 Installation
15.5.1 Location requirements
· Install the pre-cooling module in the large process air inlet duct ideally
within 2 meters (6 ft) of the DA unit. For installations where this distance
cannot be achieved, please contact your Condair representative before
installation.
· Install the post-cooling module in the large process air outlet duct ideally
within 2 meters (6 ft) of the DA unit. For installations where this distance
cannot be achieved, please contact your Condair representative before
installation.
· Install the cooling module in a location that allows proper air distribution
across the cooling coil face to maintain the performance of the cooling coil:
the variation of the airflow across the coils should remain below 20%.
· Maintain proper clearance between the cooling module and other structures
such as fans and filter racks. As well, avoid installing the cooling module
near bends and turns in the ductwork.
· Install a drain line trap on the condensate outlet of the cooling module:
the trap should be sized for the system duct pressure.
15.6 Installation procedure
The cooling coil is arranged to provide counter-flow: the air flows in the
direction opposite to the water flow inside the coil. Failing to pipe the
cooling module in counter-flow will reduce the performance of the cooling
module. Condair supplied cooling modules are left-hand coils (see Fig. 16).
Left
Return
Air
Supply
Fig. 16: Cooling module connection locations
If you are unsure about any portion of the installation, contact your Condair
representative for assistance. 1. Carefully remove the coil from the shipping
package to avoid damage to the finned surface area. 2. Use an appropriate fin
comb to straighten any bent or damaged fins. 3. Condair recommends cleaning
the coil with a commercially available coil cleaner before installation.
Refer to the Maintenance section for cleaning recommendations. 4. The cooling
module must be mounted level to ensure proper draining. Level the cooling
module for
a horizontal airflow with horizontal tubes application. See Fig. 17 below.
78 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
Horizontal Air Flow Horizontal Tubes
Level with the Y-axis & X-axis
Fig. 17: Leveling of the cooling module
5. All field piping used for the installation of the cooling module must be
self-supporting. Ensure the system piping is flexible enough to allow for
thermal expansion and contraction of the coil.
6. Install the cooling module according to the piping diagram shown in Fig.
18. 6.1 Connect the chilled water pipe to the supply connection located at the
bottom of the air leaving side. 6.2 Connect the return water pipe to the
return connection at the top of the air entering side.
7. Install the drain pan and associated piping (downslope drain line and
trap) so that there is no standing water in the drain pan and that no blow-
through occurs.
Note: The customer is responsible for providing and the installation of a
rectangular to round duct transition to facilitate airflow from the leaving
side of the pre-cooling module to the circular inlet connection of the
desiccant dryer and a round to rectangular duct transition to facilitate
airflow from the circular outlet connection of the desiccant dryer to the
entering side of the post-cooling module.
CAUTION!
Failure to properly install the coil can result in irreparable damage to the
cooling module as well as other components in the system.
Condair DA
2597586_C_EN_2311_DA_IOM
Appendix B 79
Client Supply
Air vent
Gate valve Tee
Return
Condair Supply Vent
Air flow
Supply
Dirt Leg Cap
Union
Drain
Fig. 18: Horizontal airflow piping diagram
80 Appendix B
2597586_C_EN_2311_DA_IOM
Condair DA
15.7
Commissioning
Before supplying water to the cooling module, it should be checked for leaks:
- Pressurize the cooling module to 100 PSIG with dry nitrogen. Leave the
cooling module pressurized
for a minimum of 10 minutes. 2. If the cooling module can maintain the pressure, the water connections can be considered leak-free. 3. If the pressure drops by 5 PSIG or more, re-pressurize the cooling module and wait another 10 min-
utes. If the pressure drops again, there are likely one or more small leaks that need to be located and repaired. Pressure losses greater than 5 PSIG would indicate a larger leak that should be isolated and repaired. If the coil itself is found to be leaking, contact, contact your Condair representative.
Note: All field brazing and welding should be performed using high-quality materials and an inert gas purge (like nitrogen) to reduce oxidation of the internal surface of the coil.
The cooling module is now ready for commissioning. 1. Open all air vents to eliminate air in the coil circuitry and headers. 2. Verify that all vents and drains are unobstructed and can discharge a stream of water. 3. Introduce water in the coil to ensure there is no obstruction in the vent and drain. 4. Fill the coil with water and then close all vents. 5. Perform an initial hydrostatic leak test of all brazed, threaded, or flanged joints, valves, and intercon-
necting piping. Recheck the coil level and apply the necessary corrections. 6. When the setup is found to be leak-free, discharge, and discard the initial water charge. 7. Prime the condensate trap with water to prevent airflow. 8. Flush the coil to clean the coil and pipework of all grease, oil, flux, and sealing compounds used
during installation.
The cooling module is ready for operation.
15.8 Operation
Proper air distribution is vital to coil performance. Airflow anywhere on the
coil face should not vary by more than 20%.
The pre-cooling module face velocity (air velocity across the face of the
coil) must remain between 200 fpm and 394 fpm (1.0 – 2.0 m/s). The post-
cooling module face velocity must remain between 200 fpm and 984 fpm (1.0 –
5.0 m/s). The water velocity must remain between 1 and 8 fps (0.3 2.4 m/s)
(see Table 12).
The control of the cooling module is achieved using on-off, two port
modulating, or three-way control valves. The customer is responsible for
supplying any components required for the control of the cooling module.
Please follow your controls manufacturer’s recommendations and refer to the
datasheet provided with the cooling module for recommended fluid flow rate and
coil pressure drop.
Table 12: Fluid and air velocities
Fluid velocity (fps)
Water
1 – 8
Glycol
1 – 6
Air velocity (fpm)
Cooling (dry surface)
Cooling (wet surface)
200 – 984 200 – 394
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Appendix B 81
15.9 Maintenance
15.9.1 Important notes on maintenance
Qualification of personnel All maintenance work must be performed only by
well-qualified and trained personnel authorized by the owner. It is the
owner’s responsibility to verify the qualification of the personnel.
General note Observe all safety precautions when performing maintenance tasks
on the cooling module. Follow these maintenance guidelines to maintain maximum
coil performance and service life of the cooling module.
15.9.2 Maintenance list
1. Inspect the cooling coil periodically for signs of corrosion and/or leaks.
Repair or replace the cooling coil if required. Note: Repair and replacement
of the coil and the connection of piping, valves, etc., should be performed as
needed by a qualified technician.
2. Inspect the coil surface. Clean the coil surface if necessary. Should the
coil surface need cleaning, follow the below cleaning recommendations: a. Use
caution when selecting the cleaning solution as well as the cleaning
equipment. Improper selection of the cleaning solution can damage the coil
and/or result in health hazards. b. Clean the coil from the leaving air side
so that foreign material will be washed out of the coil rather than pushed
further in. c. Be sure to carefully read and follow the manufacturer’s
recommendations before using any cleaning fluid.
4. Ensure the circulated fluid is free of sediment, corrosives, and
biological contaminants. Periodic testing of the fluid is recommended,
followed by any necessary corrective measures. Maintaining adequate fluid
velocity and proper filtering of the fluid will help satisfy this requirement.
5. If automatic air vents are not utilized, periodic venting of the coil is
required for removing the air accumulated in the tubes and maintaining proper
coil performance.
DANGER!
Caution should be exercised to avoid injury. High pressure and/or high
temperature fluids can cause serious personal injury.
82 Appendix B
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Condair DA
15.9.3 Freeze Protection
If the chilled water cooling module is not required in winter, please ensure
that it is drained and isolated. If the cooling module is used in winter and
anytime freezing conditions are present, it must be protected. This can be
accomplished by using one of the two protective methods described in the
following sections: blowing-out coils and flushing coils. Follow the
instructions detailed for each method in the corresponding section.
15.9.3.1 Blowing-out coils 1. Isolate the coil from the rest of the system by
closing the valves on both the supply and return lines
(see gate valves in Fig. 18). 2. Drain the coil by opening all drain valves
and/or the drain plug. Remove the vent plug to aid the
draining process. 3. Once the coil has been fully drained, the blower can be
connected. Caps installed in the piping on
straight runs going to the supply and return connections are ideal points to
connect the blower. The air vent and drain plug are not suitable locations for
connecting the blower.
DANGER!
Caution should be exercised when installing the blower. The blower operator
must take precautions to ensure that water does not come into contact with any
of the electrical components of the blower. Failure to do so may result in
damage to the equipment and serious injury.
4. Close the vent or drain plug on the header that the blower is connected
to, and open the drain valve or cap on the other header.
5. Operate the blower for 45 minutes and then check the coil to see if it is
dry. A mirror placed in the discharge will become fogged if moisture is
present. Repeat this procedure until the coil is dry.
6. Let the coil stand for several minutes, then blow it out again. If water
comes out, repeat the blowing operation.
7. Leave all plugs out and drains open until the threat of freezing has
passed.
Condair DA
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Appendix B 83
15.9.3.2 Flushing coils
Condair recommends the use of inhibited glycol designed for HVAC applications
for corrosion protection. The recovered fluid can then be used to flush other
coils. Select an inhibited glycol solution that will protect the coil from the
lowest temperatures that may occur at the coil locality. The following table
is provided only as a guide on the freezing point of glycol solutions
according to their concentration in glycol.
Table 13: Freeze point of glycol solutions as a function of glycol concentration
Concentration of ethylene glycol by volume (%) 0
Freezing point (°F) 1) 32
Concentration of propylene glycol by volume (%) 0
10
25
10
20
16
20
30
3
30
40
-13
40
50
-34
50
60
-55
60
- The freezing point may vary from one product to another.
Freezing point (°F) 1) 32 26 19 8 -7 -28 -60
1. Isolate the coil from the rest of the system by closing the valves on both
the supply and return lines (see gate valves in Fig. 18).
2. Drain the coil by opening all drain valves and/or the drain plug. Remove
the vent plug to aid the draining process.
3. Close the drain valve(s) and drain plug. 4. Connect the flushing system to
the coil. A typical system is shown in Fig. 19. 5
References
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