SKH4 High Pressure Atomizer

SKH4 High-Pressure Atomizer

Specifications

• Product: SKH4 High-Pressure Atomizer

• Manufacturer: Neptronic

• Year of Establishment: 1976

• Product Line: Intelligent controllers, electronic actuators,
  actuated valves, humidifiers, and electric heaters

• Manufacturing Facility: Montreal, Canada

• Manufacturing Area: 7,500 m2 (80,000 ft2)

• Compliance: Conforms to Canadian and American safety standards
  and directives

• Certification: ETL (c) & (us) mark

• Website: www.neptronic.com

Foreword

Neptronic is a private corporation that specializes in
designing, manufacturing, and distributing products for the HVAC
industry. With over 250 dedicated employees, we operate from a
state-of-the-art facility in Montreal, Canada. Our products are
known for their durability and innovative features, making them
suitable for the ever-evolving challenges of the HVAC industry.

About the Manual

This manual provides installation and operation instructions for
the SKH4 High-Pressure Atomizer humidifier. It has been developed
to ensure correct and safe operation of the product. The SKH4
High-Pressure Atomizer complies with Canadian and American safety
standards and directives and bears the ETL (c) & (us) mark. For
more information, please contact the manufacturer.

Health and Safety Instructions

General

This manual is intended for engineers and technical personnel
trained by or their official agents. It must be thoroughly read
before specifying, designing, installing, or operating the SKH4
High-Pressure Atomizer. Please retain this manual for future
reference and contact Neptronic if you have any questions.

Electrical Warning Message

WARNING: Risk of electric shock. Before opening
the electrical access door, disconnect the SKH4 High-Pressure
Atomizer. All electrical installation work must be performed by
skilled and qualified technical personnel, such as an electrician
or a technician with appropriate training. The customer is
responsible for ensuring the suitability of the technical
personnel. Please follow the local regulations regarding electrical
installations.

Health & Safety

Installation, maintenance, repair work, or de-commissioning of
the SKH4 High-Pressure Atomizer should only be carried out by
appropriately qualified technical personnel. A qualified Health
& Safety representative should identify any risks or hazards
related to the system and introduce effective control measures as
necessary. The customer is responsible for ensuring compliance with
all local regulations during the equipment installation.

FAQ

Q: What is the warranty period for the SKH4 High-Pressure

Atomizer?

A: The warranty period for the SKH4 High-Pressure Atomizer is 2
years from the date of purchase.

Q: Can the SKH4 High-Pressure Atomizer be used in commercial

buildings?

A: Yes, the SKH4 High-Pressure Atomizer is suitable for use in
commercial buildings.

Q: Where can I find the Certificate of Conformity for ETL?

A: The Certificate of Conformity for ETL is available upon
request with the manufacturer.

SKH4 High-Pressure Atomizer

Installation Instructions and User Manual
Read and save this manual

SKH4-N-ESL-231208

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Foreword
Neptronic Company Overview
Founded in 1976, Neptronic is a private corporation that designs, manufactures and distributes products for the HVAC industry. Our product line includes intelligent controllers, electronic actuators, actuated valves, humidifiers and electric heaters.
Our products are designed and manufactured by over 250 dedicated employees in our 7,500 m2 (80,000 ft2) state-of-the-art facility located in Montreal, Canada. Our entire manufacturing chain is under one roof from software and hardware development to SMT circuit board assembly, to sheet metal fabrication, to product testing ensuring that our products are engineered to last using a vertical integration model.
We currently hold several national and international patents, and with our continued commitment to research and development, we provide innovative products and technologies for the ever-evolving challenges of the HVAC industry. Exporting over 75% of our sales, we have an exclusive distribution network around the globe that provides comprehensive solutions to our worldwide customers.
About the Manual
These installation and operation instructions have been developed to facilitate the installation of the SKH4 High-Pressure Atomizer humidifier.
· The strict application of these instructions ensures conformity of your installation and operation as per the manufacturer’s recommendations.
· The application of these instructions is one of the conditions for the application of the warranty.
· The application of these instructions does not ensure, at any time, conformity to procedures, regulation or local codes, regarding electric connections and installation to local water supply.
This product has been declared to conform to the applicable Canadian and American safety standards and directives and bear the ETL (c) & (us) mark. The Certificate of Conformity for ETL is available, upon request with the manufacturer.
Copyright Information
Copyright ©2023 by Neptronic. All rights reserved. This document cannot be reproduced wholly or partially by any means, whether electronic, mechanical, photocopy, recording or other, without prior written authorization of Neptronic.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Health and Safety Instructions
General
This manual has been written to ensure correct, safe and sustainable operation of the SKH4 High-Pressure Atomiser and is intended for use by engineers and technical personnel trained by or their official agents. This manual must be read thoroughly before specifying, designing, installing or operating a SKH4 High-Pressure Atomizer. Please retain for reference and contact Neptronic should you have any questions.
The triangular symbol with the word WARNING: is used to designate danger of severe or lethal consequence.
The circular symbol with the word CAUTION: is used to designate danger of injury, or to warn of the hazardous operating condition, or other relevant information.
Electrical Warning Message
WARNING: Risk of electric shock. Do not access. Disconnect SKH4 High-Pressure Atomizer before opening the electrical access door. All work concerned with electrical installation MUST only be performed by skilled and qualified technical personnel (such as an electrician or a technician with appropriate training). The customer is always responsible for ensuring the suitability of the technical personnel. Please observe the local regulations concerning the provision of electrical installations.
Health & Safety
Installation, maintenance, repair work or de-commissioning should only be carried out by appropriately qualified technical personnel. Any risks or hazards relating to the system, including during installation and maintenance, should be identified by a qualified Health & Safety representative who shall be responsible for introducing effective control measures, as necessary. The customer is responsible for ensuring that the installation of the equipment complies with all local regulations.
CAUTION: Maintenance personnel must be trained by Neptronic or their official agent, and it is the customer’s responsibility to ensure their suitability. Failure to use qualified personnel may lead to a hazardous operating condition.
WARNING: Danger of Electrocution! Danger of contact with live parts when the unit is open. Always isolate all water and electrical supplies to the system before commencing any maintenance or repair. Isolate power and water immediately if there are any signs of water leaking from the unit.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Hygiene
IMPORTANT: Refer to local Health and Safety regulation and codes on the control of Legionellosis in water systems. In the absence of such, ASHREA guideline 12-2023 does provide recommendations. If not adequately monitored and maintained, water systems can support the growth of microorganisms including the bacterium that causes Legionnaires’ disease. The SKH4 has been designed to reduce the potential risk of legionellosis growth. Users also share the responsibility for reducing the risk of legionellosis; users are required to:
· Conduct a risk assessment of the complete water system. · Implement proper control of the water system. · Connect the SKH4 to a clean water supply main or higher quality water (such as RO). · Avoid stagnant water. · Avoid turning off the system without properly draining all conduit. Automatic drains are scheduled in the unit to
avoid the stagnant water. · Avoid water temperatures that increase the risk of Legionella growth. (77°F to 113°F, 25°C to 45°C) · Clean and disinfect the system regularly, at least once a year.
WARNING: Risk of Legionnaires’ disease, which can be fatal. Install and operate the SKH4 High-Pressure Atomizer as per the instructions given in this Installation Instructions and User Manual.
WARNING: If the SKH4 High-Pressure Atomizer is turned off for prolonged periods (more than 24 hours), ensure that any piping supplying the unit is drained, unless they supply other systems which ensure a regular renewal of water in the system. Failure to do so may result in stagnation of the water and contamination that might cause Legionnaires’ disease, which can be fatal.
It is the responsibility of the person on whom the statutory responsibility falls to determine all control and preventative measures outlined in this manual.
Correct Use
Neptronic systems and products are designed only for humidification and cooling use. Any other application is not considered appropriate for the intended purpose. The manufacturer cannot be made liable for any damage resulting from incorrect use.
Important Start-Up Information
Before turning on and operating the SKH4 High-Pressure Atomizer:
· Read all instructions and installation procedures outlined in this manual. Ensure that the operation of the system is properly understood before commencing the start-up procedure.
· Ensure that all wiring is properly installed and that all connections have been made correctly, including the network communication cable between the pump station and the RVP(s).
· Verify all piping before starting up the system. As each zone may have a different capacity and the system has been configured as such, connecting the wrong RVP output to a zone may lead to erratic operation.
General Warranty
This product is subject to the terms and conditions described at www.neptronic.com/sales-conditions.aspx.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Handling and Packaging
Lifting or Handling MUST be carried out by trained and qualified personnel. Ensure that the lifting operation has been properly planned, assessed for risk and that the equipment is checked by a qualified Health & Safety representative, and effective control measures are in place.
It is the customer’s responsibility to ensure that the operators are trained in handling heavy goods and to enforce the relevant lifting regulations.
The SKH4 High-Pressure Atomizer MUST always be handled and lifted with care and should remain in its original packaging for as long as possible before installation.
The SKH4 High-Pressure Atomizer package may be carried using a forklift from the underside. Caution should be exercised to ensure balanced load before lifting.
Inspection
Upon receipt, and once packaging material is removed, carry out an inspection to ensure that no damage occurred during transit. Report any damage immediately to your Neptronic representative.
Unpacking
The SKH4 pump station is delivered in a crate. All other optional products, such as the distributors or the remote valve panel are delivered separately in carton.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Table of Contents

Handling and Packaging …………………………………………………………………………………………………………………………………. iv Overview……………………………………………………………………………………………………………………………………………………………………………. 7
Benefits …………………………………………………………………………………………………………………………………………………………..7 Features …………………………………………………………………………………………………………………………………………………………7 SKH4 System …………………………………………………………………………………………………………………………………………………………………….. 8 Principle of Operation ……………………………………………………………………………………………………………………………………….8 SKH4 Pump Station…………………………………………………………………………………………………………………………………………………………….. 9 Visual Overview ………………………………………………………………………………………………………………………………………………9 Pump Unit Nomenclature ………………………………………………………………………………………………………………………………. 11 Capacities and Power Consumption of the Pump Unit (Brass) …………………………………………………………………………… 12 Capacities and Power Consumption of the Pump Unit (SS) ……………………………………………………………………………….. 13 Dimensions and Weight ………………………………………………………………………………………………………………………………… 14 Fan-Assisted Distributors……………………………………………………………………………………………………………………………………………………. 15 Fan- Assisted Distributors Nomenclature………………………………………………………………………………………………………….. 15 Capacities and Power of the Fan-Assisted Distributors ……………………………………………………………………………………… 15 Fan-Assisted Distributors Dimensions and Weight ……………………………………………………………………………………………. 16 In-Duct Distribution Rack ……………………………………………………………………………………………………………………………………………………. 17 Basic Installation Overview …………………………………………………………………………………………………………………………………………………. 18 Pump Unit Installation………………………………………………………………………………………………………………………………………………………… 19 Step 1 ­ SKH4 Pump Station Installation…………………………………………………………………………………………………………. 19 General Recommendations……………………………………………………………………………………………………………………………….. 19 Step 2 ­ Water Connections for the SKH4 Pump Station …………………………………………………………………………………… 21 Step 3 ­ Power Supply Connections……………………………………………………………………………………………………………….. 23 Power Supply Connections on SKH4 Pump Station ……………………………………………………………………………………………… 23 Power Supply Knockout Holes Location on SKH4 Pump Station ……………………………………………………………………………. 24 Step 4 ­ Electrical Control Connections…………………………………………………………………………………………………………… 25 Safety Contact Connections for Pump Unit………………………………………………………………………………………………………….. 25 Safety Contact Connections Single Zone Without TRUB ………………………………………………………………………………………. 25 Safety Contact Connections per Zone from TRUB ……………………………………………………………………………………………….. 25 Network Communication …………………………………………………………………………………………………………………………………… 26 Step 5 ­ Pump Controller Installation and Configuration ……………………………………………………………………………………. 27 Idle Screen ………………………………………………………………………………………………………………………………………………………………………. 28 Menu Access ……………………………………………………………………………………………………………………………………………….. 28 Configuration parameters ………………………………………………………………………………………………………………………………….. 29 Control function ……………………………………………………………………………………………………………………………………………….. 29 Control Profile Selection ……………………………………………………………………………………………………………………………………. 29 Single Zone Operation ……………………………………………………………………………………………………………………………………… 29 Multi-Zones Operation ………………………………………………………………………………………………………………………………………. 30 Menu – General [Level 1 – No password required] ………………………………………………………………………………………………… 31 Menu – User Settings [Level 2 – Requires level 2 (or higher) password in order to access] ………………………………………… 34 Menu – Service [Level 3 – Requires level 3 (or higher) password in order to access]…………………………………………………. 36 Menu – Installation [Level 4 – Requires level 4 (or higher) password in order to access] ……………………………………………. 37 Menu – Integration [Level 5 – Requires level 5 password in order to access] ……………………………………………………………. 41 List of Alarms and Warnings ………………………………………………………………………………………………………………………….. 44 Distribution Installation……………………………………………………………………………………………………………………………………………………….. 45 Spraying in Space (Standard) ……………………………………………………………………………………………………………………………. 45 Spraying in Space with Fan-Assisted Distributors ………………………………………………………………………………………………… 47 Spraying in Duct ………………………………………………………………………………………………………………………………………………. 50

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Optional ­ Remote Valve Panel (RVP) …………………………………………………………………………………………………………………………………. 51 RVP Dimensions ………………………………………………………………………………………………………………………………………….. 51
Location ………………………………………………………………………………………………………………………………………………………….. 52 Positioning ………………………………………………………………………………………………………………………………………………………. 52 Wall Mounting………………………………………………………………………………………………………………………………………………….. 52 Start-Up Procedure……………………………………………………………………………………………………………………………………………………………. 53
Initial Verification ………………………………………………………………………………………………………………………………………….. 53 Diagnostic mode…………………………………………………………………………………………………………………………………………… 54 Servicing and Maintenance ………………………………………………………………………………………………………………………………………………… 55 Preventative Maintenance ……………………………………………………………………………………………………………………………… 55 Preventive Maintenance (continued)……………………………………………………………………………………………………………….. 56 Nozzle Cleaning …………………………………………………………………………………………………………………………………………… 57 De-scaling the Droplet Separator ……………………………………………………………………………………………………………………. 58

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Overview
The SKH4 High-Pressure Atomizer uses water through a high-pressure system to produce a fine mist with a droplet size of less than 20µm. The ambient air absorbs the fine mist, and the SKH4 adapts to seasonal changes to provide direct evaporative cooling in summer and humidification in winter. Additionally, the SKH4 provides BACnet MS/TP communication, multi-zone operation (up to 4 zones) and remote connection to the entire system from any zone.
Benefits
· Very low energy consumption · Free cooling (up to 21.5°F [12°C]) · Hygienic operation · Environmentally friendly · Low pressure drop in ventilation conduit
Features
The following are the features of the SKH4 High-Pressure Atomizer: · High pressure pump with recirculation valve integrated. · Full stainless steel distribution valves and fittings. · Corrosion resistant distribution network made of stainless steel pipe or nylon tube. · BACnet communication (optional). · User-friendly, menu-driven LCD (128 x 64). · Real-time clock and SD card or USB key for schedule, trending, and history log. · Firmware upgrade using an SD card or USB key.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
SKH4 System
Principle of Operation
The SKH4 High-Pressure Atomizer is a system for humidifying and cooling with a fine mist of water droplets. The pump unit pressurizes the high-quality water until it reaches a pressure of 1000psi (69bar), then distributes it throughout a network of stainless steel pipes or nylon flexible conduits, which then distributes the pressurized water as a fine mist. These water particles measure less than 20µm. This mist is then easily absorbed into the air, providing humidification, and cooling, through the adiabatic evaporation process.
The SKH4 Pump Unit is equipped with a pump and a motor that can use an optional VFD in order to control the pump speed. The regulation of the outlet pressure is assured mechanically by the pump, in order to maintain a consistent and reliable outlet pressure, regardless of the configuration of stages open.
The unit is equipped with two analog manometers place in the front, one for the low pressure and one for the high-pressure outlet. There are also digital manometers so that the controller can monitor those pressures. The low pressure controls the input of water to the pump in order to protect the pump unit from running dry. The high-pressure sensor monitors the output of the pump, in order to assure consistent mist generation and detect leakage.
In case of unexpected shutdown and failure of valve that could create a water hammer coming back to the pump, a pressure relief is placed in the recirculation loop. The relief valve prevents damage to the inlet of the pump and the low-pressure components.
The distribution of high-pressure water is assured in the pump unit, or optionally from a remote valve panel, with an array of configurable valves. Each pair of valves (one for the input and one for the drain) is assigned at the installation to a capacity in mass per hour and to a control signal. The unit is able to receive up to 4 control signals in order to cover 4 different zones, which can also be split up into 6 stages in total.
The control signals are displayed either by using a thermostat in each zone that is connected to the unit or by connecting through a BMS with a demand directly to the unit. The BMS can be connected via BACnet or Modbus protocols.
The distribution of mist is accomplished by using anti-drip stainless steel nozzles which are designed to create a cone of mist to shoot the water droplets directly into the air. The nozzles are either installed directly in the space or in an AHU.
In-space distribution requires installing distribution piping (stainless steel or nylon flexible conduit), with a fitting for each nozzle. Clearances are important between nozzles and any obstacle in the area, such as trusses, columns and/or tall equipment. See the hydraulic and distribution design guide for more details.
In-space distribution can be facilitated with optional fan-assisted distributors. Those distributors allow reduced absorption distances and improve the coverage of the distribution network.

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SKH4 Pump Station
Visual Overview

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Illustration 1 – SKH4 Enclosure

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Illustration 2 – Detailed Overview of Components

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Illustration 3 – Detailed Overview of Low Pressure Components

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Pump Unit Nomenclature

Table 1 – Pump Module Nomenclature

Designation

Pump Module Nomenclature SKH4-ABBBC DD EF
Notation

Description

A

N: North America – 60Hz

Frequency

BBB C DD
E
F

005 to 300 B (Brass) S (Stainless) 0 to 6 0 to 6 A: 120 VAC / 1ph B: 208 / 1ph C: 220-240 VAC / 1ph D: 208 / 3ph E: 220-240 VAC / 3ph G: 480 VAC / 3ph H: 600 VAC / 3ph [blank] (On/Off) M (Modulating – Controlled with VFD)

Capacity (lb/h) Pump Type Number of Inlet Valves (Zero implies valve in the RVP) Number of Drain Valves (Zero implies valve in the RVP)
Supply Voltage
Motor Control

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Capacities and Power Consumption of the Pump Unit (Brass)

Table 2 – Capacities and Power Consumption of the Pump Unit (Brass)

Model
SKH4-N021B SKH4-N021B – M SKH4-N050B SKH4-N050B – M SKH4-N100B SKH4-N100B – M SKH4-N185B SKH4-N185B – M SKH4-N280B SKH4-N280B – M

Max output (lb/h)

Min Output (lb/h)

210

52

210

20

500

125

500

20

1000

250

1000

20

1850

462

1850

20

2800

700

2800

20

A 120/1 15.0
8.4 22.4 13.1
–

Model
SKH4-N021B SKH4-N021B – M SKH4-N050B SKH4-N050B – M SKH4-N100B SKH4-N100B – M SKH4-N185B SKH4-N185B – M SKH4-N280B SKH4-N280B – M

Power (HP)
1/2 1/2 1 1 2 2 5 5 5 5

A 120/1
14 16 10 14 –

Brass Pump

MCA (A)

B 208/1

C 240/1

D 208/3

E 240/3

G 480/3

8.6

7.5

4.9

4.3

2.1

4.8

4.2

4.8

4.2

2.1

12.9

11.2

7.7

6.6

3.3

7.6

6.6

7.6

6.6

3.3

–

–

11.3

9.0

4.9

–

9.7

11.2

9.7

4.8

–

–

22.9

19.8

9.9

–

–

22.8

19.8

9.9

–

–

22.9

19.8

9.9

–

–

22.8

19.8

9.9

Brass Pump

Minimum Wire Gauge (Copper conductors)

B

C

D

E

G

208/1 240/1 208/3 240/3 480/3

16

16

16

16

16

16

16

16

16

16

14

14

14

16

16

16

16

16

16

16

–

–

14

14

14

–

14

14

14

16

–

–

10

14

12

–

–

10

14

12

–

–

12

12

14

–

–

12

12

14

H 600/3
1.7 1.7 2.7 2.7 3.9 3.9 8.0 7.9 8.0 7.9

Cabinet
S S S S S S L L L L

H 600/3
16 16 16 16 16 16 14 14 16 16

Cabinet
S S S S S S L L L L

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Capacities and Power Consumption of the Pump Unit (SS)

Table 3 – Capacities and Power Consumption of the Pump Unit (SS)

Model
SKH4-N062S-M SKH4-N0140S-M SKH4-N0225S-M SKH4-N0280S-M
Model
SKH4-N062S-M SKH4-N0140S-M SKH4-N0225S-M SKH4-N0280S-M

Max output (lb/h)

Min Output (lb/h)

620

62

1400

140

2250

225

2800

280

Power (HP)
1 1/2 3 5 5

A 120/1
–
A 120/1
–

Stainless Steel Pump

MCA (A)

B 208/1

C 240/1

D 208/3

E 240/3

G 480/3

–

18.8

19.0

18.8

9.4

–

–

29.4

29.1

14.6

–

–

45.5

45.2

22.6

–

–

45.5

45.2

22.6

Stainless Steel Pump

Minimum Wire Gauge (Copper conductors)

B

C

D

E

G

208/1 240/1 208/3 240/3 480/3

–

14

14

14

14

–

–

10

10

14

–

–

8

8

12

–

–

8

8

12

H 600/3
7.5 11.8 18.2 18.2

Cabinet
S S L L

H 600/3
14 14 14 14

Cabinet
S S L L

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Dimensions and Weight

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Illustration 4 – SKH4 Pump Unit Dimensions

Table 4 – Pump Station Dimensions (North America)

Enclosure Type Small Enclosure Large Enclosure

Model
SKH4-N021B SKH4-N050B SKH4-N100B SKH4-N062S SKH4-N140S SKH4-N175B SKH4-N300B SKH4-N225S SKH4-N280S

Dimensions (inch) [mm]

A

B

C

Weight (lb) [kg]

44.5 (1130)

28.5 (724)

13.57 (345)

300 (136)

46.63 (1184)

30.63 (778)

18.69 (475)

320 (145)

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Fan-Assisted Distributors

Fan-Assisted Distributors Nomenclature

Table 5 – Fan-Assisted Distributors Nomenclature

AAA BBBB C DD

Designation

Fan-Assisted Distributors Nomenclature

SKH4-AAA BBBB C DD

Notation

Description

MDU

Radial distribution unit

ADU

Axial distribution unit

0100 to 2500

CFM

A : 120 VAC / 1ph

B : 208 VAC / 1ph

Supply Voltage

C : 240 VAC / 1ph

01 to 20

Number of spray nozzles

Capacities and Power of the Fan-Assisted Distributors

Table 6 – Fan-Assisted Distributors Capacity and Power

Model

Nozzle Capacity

CFM

Voltage

RLA (A)

Mounting

Illustration

1 (6.6lb/h to 10lb/h)

ADU (Axial)

5 (33lb/h to 50lb/h)

7 (46lb/h to 70lb/h)

MDU (Radial)

9 (60lb/h to 120lb/h)
12 (80lb/h to 120lb/h)

120V (60Hz) 200
240V (60Hz)

1000 2000 1000 2000

120V (60Hz) 240V (60Hz) 120V (60Hz) 240V (60Hz) 120V (60Hz) 240V (60Hz) 120V (60Hz) 240V (60Hz)

0.9
Wall mounted
0.5
1.4 0.5
Wall mounted 1.5
0.9 1.4 0.5
Suspended 1.5 0.9

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Fan-Assisted Distributors Dimensions and Weight

Table 7 – Fan-Assisted Distributors Dimensions and Weight

Model

Nozzle Capacity

Dimensions (in) [mm]

Weight (lb) [kg]

Mounting

Illustration

1 (6.6lb/h to 10lb/h)
[3l/h to 5l/h]

12.14 x 9.4 x 10.5 [308 x 239 x 267]

8 [3.6]

Wall mounted

ADU (Axial)
MDU (Radial)

5 (33lb/h to 50lb/h)
[15l/h to 25l/h] 7 (46lb/h to 70lb/h)
[21l/h to 32l/h] 9 (60lb/h to 90lb/h)
[27l/h to 45l/h] 12 (80lb/h to 120lb/h)
[36l/h to 60l/h]

Diameter 18.3 x 8.4 [465 x 213] Diameter 23.1 x 9.1 [587 x 231] Diameter 20.3 x 9 [516 x 229] Diameter 23.5 x 8.7 [597 x 221]

17 [7.7] 25 [11.3]

Wall mounted

22 [10] 31 [14.1]

Suspended

For more information on the absorption distance, please refer to the Distributors Guide.

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In-Duct Distribution Rack

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Illustration 5 – In-Duct Distribution
Dimensions and weight vary for each installation, consult with the factory in order to get a quote and detailed drawings for each application. Refer to the Duct Distribution Guide for more details how to install the duct rack and droplet separator.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Basic Installation Overview
WARNING: Failure to observe manufacturer’s installation recommendations voids the manufacturer’s warranty.
Installation Summary

Illustration 6 – Overview of a Typical System Distribution in Space

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Pump Unit Installation
Step 1 ­ SKH4 Pump Station Installation Step 2 ­ Water and Drain Connections Step 3 ­ Power Supply Connections Step 4 ­ Control Connections Step 5 ­ Pump Controller Installation and Configuration
Step 1 ­ SKH4 Pump Station Installation
General Recommendations
WARNING: Risk of electric shock. Disconnect the appliance from the electric supply before commencing installation. CAUTION: Risk of injury. The SKH4 pump station is heavy; It MUST always be handled and lifted with care.
Location
Consider the following points before deciding the location for the pump station: · Plan a location that is easy to access to permit an easy inspection and servicing of the pump station. · Do not install the pump station where the failure of the appliance could cause damage to the building structure or other equipment. · Ensure that the location is ventilated appropriately, and that the ambient temperature is less than 86°F (30°C). · Ensure that the floor beneath the SKH4 pump station is waterproof to withstand any water spillage during servicing or if a problem occurs.
Positioning
· The pump unit can be floor mounted, either directly or with the use of a floor stand, or it can be wall mounted. · Allow some space beneath the pump station for the drain pan connection, located below the bottom plate. · Respect the clearances around the pump station as shown in this illustration, in order to permit access to the
connections and allow for servicing:
Right side clearance 6″ (152mm)

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Front clearance 30″ (762mm)

Left side clearance 24″ (610mm)

Illustration 7 – Clearances

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Floor Mounting

· Provide a level, solid foundation for the SKH4 pump station.

· Ensure that the SKH4 pump station is leveled with the provided with adjustable legs.

· Allow some space beneath the pump station for the drain pan connection, located below the bottom plate.

Wall Mounting

· Provide a level, solid foundation for the SKH4 pump station.

· Allow some space beneath the pump station for the drain pan connection, located below the bottom plate.

Min. Clearance 4″ (102mm) (Not mandatory)
If electrical wire connected from the back side

Min. Clearance 6″ (152mm) for motor ventilation; left door removal optional
electrical inlet
Min. Clearance 24″ (610mm) for front door opening and mainteanance

Min. Clearance 24″ (610mm) for plumbing and electrical
inlet and outlet connection

SKH4

Leave adequate space beneath the bottom plate for plumbing connections
Illustration 8 – Wall Mounting & Clearances
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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Step 2 ­ Water Connections for the SKH4 Pump Station
· Install an isolation valve (not supplied) on the water line near the pump station inlet for ease of maintenance and servicing. Place the valve in front of the water filter if used.
· Flush the water line thoroughly before connecting the feed water pipework to the pump station.

Illustration 9 – Water Connections for Pump Station Note: Do not over tighten the hose fittings as this may damage the seals.

Water Supply

Table 8 – Water Supply and Drain Connection Specifications
Specification Water supply size Minimum water supply pressure Maximum water supply pressure Minimum water supply temperature Maximum water supply temperature
Water supply quality
Drain outlet size Pan drain outlet size

All Models Male NPT 1/2″ (DN15)
30 PSI (2.0 bar) 70 PSI (4.8 bar)
38°F (3°C) 77°F (25°C) Stainless Steel Pump: 5-20 µS/cm Brass Pump: 10-80 µS/cm Female NPT 1/2″ (DN15) 7/8″ Round tube

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Water Supply
· Connect the female NPT connection of the water supply inlet of the humidifier to a high quality water source.
· The SKH4 requires high quality water to prevent scale build-up and clogging of the spray nozzles, resulting in frequent replacement of nozzles. Poor water quality is also damaging to the pump. Furthermore, most of the minerals contained in the water are sprayed into the air.
· Brass pumps are compatible with tap water, reverse osmosis (RO) and deionized water (DI), although RO water is preferable, in the conductivity range of 10-80 µS/cm.
· Stainless steel pumps require high quality water, tap water will cause irreversible damage quickly. RO or DI water in the 5-20 µS/cm conductivity range is recommended.
· If the supplied water is treated with reverse osmosis or deionization filtration, control the total dissolved solid contents in the water to be above the minimum recommended (see Table 8), as there is no need for ultra- pure water.
High-Pressure Water Outlets
· High-pressure water outlets use a 3/8″ (DN10) flexible high-pressure nylon hose (available upon request) connected to a push-to-connect 3/8″ fittings (supplied) with the respective stage and drain valves.
· Alternatively, stainless steel rigid piping with compression fittings or 1/2″ (DN15) flexible high-pressure nylon with matching push-to-connect hose can also be used at the outlets (available upon request).
· (Optional) If using a remote valve panel (RVP), connect the RVP inlet manifold to a single outlet from the pump unit to minimize pressure losses. Connections are made using a 3/8″ (DN10) or 1/2″ (DN15) flexible highpressure nylon hose or a high-pressure hydraulic hose or stainless steel rigid piping (available upon request). (See RVP section)
Note: Ensure that the rating of the flexible hose is appropriate for the operating pressure (1000PSI / 70bar).
Water Drain
· Connect a ½” NPT (DN15) pipe (not supplied) to the 1/2″ NPT female (DN15) drain outlet to an open drain outlet.
· The pan drain is located below the base of the SKH4 pump station and is directed towards the main building open drain.
· The open drain pipe must have a minimum diameter of 1-1/2″ (DN40).
WARNING: Risk of flooding. Never connect the drains to a closed piping network.

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Illustration 10 – Water Drain Connections

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Step 3 ­ Power Supply Connections

WARNING: All work concerned with electrical installation MUST only be performed by skilled and qualified technical personnel, such as electricians or technicians with appropriate training. The customer is responsible for ensuring their suitability.
WARNING: Risk of electric shock. Isolate all power supplies before installation and maintenance of the SKH4 High-Pressure Atomizer or the RVP.
You MUST externally fuse all incoming power supplies for over current protection. Observe local codes and regulations concerning the provision of electrical installations.
The installation engineer must ensure the following:
· Use copper power conductors only.
· Ensure that the size of the power conductors is suitable for the maximum current supplied.
· Secure incoming power cables using a suitably sized cable gland.
· Secure each terminal connection with a cable ferrule.
· Do not use the SKH4 pump station’s frame to connect to ground. The SKH4 pump station cabinet has a provision for the electrical ground.
Power Supply Connections on SKH4 Pump Station

1 Phase (by others)

3 Phase (by others)

Illustration 11 – One and Three Phase Power Supply Connections

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Power Supply Knockout Holes Location on SKH4 Pump Station
Connect high power cable through the knockout holes provided on the unit. Alternative points are given depending on the installation constraints.
Illustration 12 – Power Supply Knockout Holes

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Step 4 ­ Electrical Control Connections
WARNING: All work concerned with electrical installation MUST only be performed by skilled and qualified technical personnel, such as electricians or technicians with appropriate training. The customer is responsible for ensuring their suitability. WARNING: Risk of electric shock. Isolate all power supplies before installation and maintenance of the SKH High-Pressure Atomizer.

Illustration 13 – Electrical Control Connections
Safety Contact Connections for Pump Unit
Available directly on the pump unit, this safety contact will interrupt all actions of the pump unit, for all zones.
· Interlock. Wire the switch on the PCB between terminals TB3 1&4. If this contact opens, the operation of the SKH4 unit stops all zones and an Alarm will be displayed. If the interlock is not used, install a jumper between terminals TB3 1&4.
Safety Contact Connections Single Zone Without TRUB
· Interlock. Wire the switch on the PCB between terminals TB3 2&3. If this contact opens, the operation of the SKH4 unit stops all zones and an Alarm will be displayed. If the interlock is not used, install a jumper between terminals TB3 2&3.
Safety Contact Connections per Zone from TRUB
Available on each TRUB, these will have an effect only the associated zone, other zones will continue their operation:
· Airflow Switch (Activated option). Wire the contact on the TRUB between the recommended terminals TB2 2 (COM) & 3 (UI3). If this contact opens, the operation of the valve(s) will stop. The unit displays the Airflow switch as `open’ but will not generate an alarm. (refer to the configuration menu)
· High Limit Humidistat (Activated option). Wire the contact on the TRUB between the recommended terminals TB1 13 (COM) &15 (UI2). If this contact opens, the operation of the valve(s) will stop, and an Alarm will be displayed. If spraying in-space, the high limit humidistat is not required.
· Interlock. Wire the switch on the TRUB between the recommended terminals TB2 2 (COM) & 4 (UI4). If this contact opens, the operation of the SKH4 unit stops and an Alarm will be displayed.
For more information, consult the TRUB documentation.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Network Communication
If the control signal is from BACnet MS/TP or Modbus RTU network, connect terminals TB2 1&2 to the network (RS485 A+ & B). If the control signal is from a network of one or multiple TRUB, connect terminals TB1 1&2 to the network (RS485 A+ & B-). The network control signal(s) must be selected by accessing the Control sub-menu located in the Installation menu (see page 58). To setup the communication parameters, access the Integration menu (see page 41).
Note: BACnet MS/TP is configured by default. To change the communication interface to Modbus RTU, access the NtwrkOption setting located in the Network sub-menu of the Integration menu (see page 41).

Illustration 14 – Network Communication Connections
BACnet ­ Network
The SKH4 master pump station may use BACnet or Modbus protocols to communicate, either with an IP connection or MS/TP.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Step 5 ­ Pump Controller Installation and Configuration
User Interface

Back/Menu Button Up Arrow Button

Enter Button Plus Button

Down Arrow Button

Minus Button

Power Button

Drain Button

Status Display

Controller Panel Features

Illustration 15 – SKH4 Controller

The following are the features of the Control Panel and their description:

Table 9 – Humidifier Control Panel Description

Feature

Description
Indicates that the humidifier is turned on. The LED will begin blinking as the system (Blue) is initializing.

Status Display

Indicates that the humidifier is issuing an alarm or warning and that the system must (Red) be verified.

O (Off)

Indicates that the humidifier is turned off.

Power Button

The power button is used to turn the humidifier on or off. Must be pressed and held for 3 seconds to perform the related action, in order to prevent accidental activation. Even when the humidifier is powered off, the controller remains operational.

Drain Button

The drain button is used to manually activate the drain cycle. Must be pressed and held for 3 seconds to perform the related action, in order to prevent accidental activation. Even when the humidifier is powered off, a manual drain cycle may be initiated. Once the manual drain cycle is completed, the system will automatically be powered off. To turn the humidifier back on, press and hold the power button.

Up and Down Arrow Buttons

The up arrow button is used to scroll to the next menu item or parameter. The down arrow button is used to scroll to the previous menu item or parameter.

Plus and Minus Buttons
Back/Menu Button
Enter Button

The plus button is used to increase the value of the displayed parameter.
The minus button is used to decrease the value of the displayed parameter.
The back/menu button is used to go to previous menu or to access the Main Menu page from the Idle Screen. The enter button is used to advance to the next sub-menu, to access selected option or to confirm set parameter value.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Idle Screen
When the controller is in operation, the unit displays the following information on the Idle Screen:

Table 10 – Idle Screen Display Description

Setting Pressure: ControlState:

Default Current value Current value

State:

Current value

ZonexDemand: Current value

Range (* indicates no configuration; display only)

• (min: 0 psi, max: 10000 psi)
• (Off, Normal, LowLimit, HighLimit, NoAirFlow, Interlock) (Off, Idle, LineRinse, TankRinse, Filling, Draining, Heating, Boiling, Alarm) (min: 0.00%, max: 100.00%)

Description/Notes
Displays the current value of the pump pressure. Displays the current state of the safety control circuit and whether the circuit has been disconnected due to a safety switch. Displays the current state of operation of the humidifier. Displays the value of demand for the selected zone.

Illustration 16 – Idle Screen Display

Menu Access

· From the Idle Screen, the Main Menu can be accessed by pressing the Back/Menu button, enabling access to the General menu.
· To view other menu options and perform configurations to the system, press Enter while on the Idle Screen to advance to the Login Screen, where a valid password must be entered.
· Four different passwords can be used, each granting access to an additional menu option depending on the access level assigned to the provided password.
· If a password of higher access is provided, all menu options accessible with the use of a lower-level password will also be unlocked.

Table 11 – Access Levels

Access Level
1

Password None

2

2222

3

3322

4

4433

5

5544

Menu Unlocked
General User
Service Installation Integration

Description/Notes
Grants access to General menu. Grants access to General and User menus. Grants access to General, User and Service menus. Grants access to General, User, Service and Installation menus. Grants access to General, User, Service, Installation and Integration menus.

Note: To modify or retrieve lost passwords, please contact factory.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Configuration parameters
In the menu Installation/quickConfig/Stage[ ], each stage needs to be defined. Input which zone (control signal) each stage is connected to and input the capacity (L/h) for the stage control. Input the drain valve associated with the stage valve (the two valves should form a loop with the nozzles in between). The drain volume can be increased if the line is very long, in order to ensure depressurization of the line.
Control function
Ramp up: In the menu Installation/quickConfig/Zone[ ]/StgOpenDelay, this parameter allows a user to add a delay between the opening of the stages, for each zone separately. When that time value is higher than zero, the smallest stage will open, followed by the second smallest after the delay parameterized. The output increases progressively, which results in less intense variation in the system, which results in the control being more precise and reduces the risk of overshooting during the startup process.

Pulse settings: In the menu Installation/quickConfig/Stage[ ], the MaxOnTime and PauseTime features allow the user to make the stages pulse. This feature can be useful in order to shorten absorption distances by allowing a time pause between the addition of water in the air which eases the absorption. This parameter should only be used with multi stage zones, in order to prevent the short cycling of the pump and motor. If the humidification by pulse stops and starts the motor in a period shorter than 5 min, revise the pulse setting to prevent damages to the pump unit components.

WARNING: The parameters for setting the pulse frequency should be validated with a test in order to make sure the pump and motor do not start and stop too frequently within 5 minutes, as this may damage the pump or the electrical components.
Control Profile Selection

In order to select the desired control profile, first determine the signal type to be used (by demand [external profile] or sensor [internal profile]). Next, determine whether the humidifier is going to be controlled via a network or by an analog signal from the following options based on the number of zones:
Single Zone Operation

Control Profile ­ External Signal ­ Analog
The unit expects a demand signal in the form of a 0-10V, wired on the pump unit’s control board, on pin TB4 3. The unit follows that demand directly and activates the respective valves in order to minimize the error between the output and the demand. This configuration requires a thermostat.
Control Profile ­ External Signal ­ Network
The unit expects a demand signal, coming from the network. Set the demand using the object AV.138 Control Network Demand. This configuration requires a thermostat and a BMS.
Note: The main controller board inside of the pump unit needs be equipped with the option of network, either with the IP connection or the MS/TP connection. Both Modbus and BACnet protocols are supported.
Control Profile ­ Internal Signal ­ Analog
The pump unit’s control board receives a 0-10V signal from the setpoint reading and a room temperature/humidity input from a sensor through the control input on TB4 pin 3, and then calculates internally the PID (proportional, integral, and derivative) control responses and computes the desired outputs. This configuration requires temperature/humidity sensor(s). Refer to Table 12 – Complete List of Configurable Objects for complete list of configurable objects.
Control Profile ­ Internal Signal ­ Network
The unit expects either a temperature demand signal (set using object AV.155 Control Network Demand and object AV.156 Room temperature setpoint) or a humidity demand signal (set using object AV.106 Room RH Network Reading and object AV.107 Room RH Setpoint), coming from the network and then calculates internally the PID (proportional, integral, and derivative) control responses and computes the desired outputs. This configuration requires temperature/humidity sensor(s) and a BMS. Refer to Table 12 – Complete List of Configurable Objects for complete list of configurable objects. Note: The main controller board inside of the pump unit needs be equipped with the option of network, either with the IP connection or the MS/TP connection. Both Modbus and BACnet protocols are supported.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Table 12 – Complete List of Configurable Objects

Control Profile Internal Analog/Network Humidity
Internal Network Temperature

PID Loop Configuration
Configurable Objects
1. AV.110 Room RH Demand Proportional Gain 2. AV.111 Room RH Demand Integral Time 3. AV.112 Room RH Demand Derivative Time 4. AV.230 Room RH Demand Proportional Band 5. AV.108 Room RH Unoccupied Setpoint 6. AV.109 Room RH Vacant Setpoint
1. AV.159 Room Temperature Demand Proportional Gain. 2. AV.160 Room temperature Demand Integral Time. 3. AV.161 Room Temperature Demand Derivative Time. 4. AV.174 Room Temp Demand Proportional Band. 5. AV.157 Room Temperature Unoccupied Setpoint. 6. AV.158 Room Temperature Vacant Setpoint.

Multi-Zones Operation

Control Profile ­ External Signal ­ Analog
Same description as the single zone operation.

TRUB Controller

When using a TRUB thermostat, connect the PCB controller to the TRUB. For more details, consult the TRUB documentation.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Menu – General [Level 1 – No password required]

Press the back/menu button from the Idle Screen to access the General menu.

Sub-Menu

Setting

Default

Range (* indicates no configuration;
display only)

SysPowerState:

Off

• (Off, On)

Airflow:

Closed

• (Closed, Open)

SupplyHighLimit:

Closed

• (Closed, Open)

Status

Interlock:

Closed

State:
Pressure: ControlSate: ZoneA to D
ZoneADemand to D:
Temperature:

Current value
Current value Off [6] 50%
68.0°F [20.0°C]

Humidity:

0.00%RH

Control: Occupancy:

Off Occupied

• (Closed, Open)
• (Off, Idle, Spraying, Draining, Alarm) (min: 0 psi, max: 10000 psi) (Off, On)
• (min: 0%, max: 100%)
• (min: -40.0°F, max: 302.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F min: 0.00%RH max: 100.00%RH Units: %RH
• (Off, Normal, Airflow, SupplyHighLimit, Interlock)
• (Occupied, Unoccupied, Vacant, Off)

RoomTempDemand:

Current value

• (min: 0%, max: 100%)

Control

TempSupplyHLDemand: Current value

• (min: 0%, max: 100%)

RoomRHDemand:

Current value

• (min: 0%, max: 100%)

RHSupplyHLDemand:

Current value

• (min: 0%, max: 100%)

Physical IO

AirFlow: SupplyHighLimit:

Closed Closed

• (Closed, Open) * (Closed, Open)

Description/Notes
Displays the status of the system power state.
Displays the status of the airflow switch. If Open is displayed, it indicates that the airflow is not detected by the air pressure switch. Displays the status of the high limit contact. If Open is displayed, it indicates that the humidity level has exceeded the setpoint on the high limit humidistat. Displays the status of the interlock. If Open is displayed, it indicates that the humidifier is stopped as a result of the interlock safety being open. Displays the current state of operation of the humidifier.
Displays the current value of the pump pressure.
Displays the status of the control state.
Displays the value of demand for the zone.
Displays the value of temperature for the zone.
Displays the valve humidity for the zone.
Displays the current state of the safety control circuit and whether the circuit has been disconnected due to a safety switch.
Displays the current occupancy state.
Displays the room temperature demand value. Only appears if there is a single zone and ControlProfile is set to an internal control mode or DemandSrc is set to TempRoomDemand. Displays the supply high limit temperature demand value. Only appears if there is a single zone and ModHLProfile is set to an internal control mode or HighLimitSrc is set to TempSupplyHLDemand or if there’s a single zone. Displays the room humidity demand value. Only appears if there is a single zone and ControlProfile is set to an internal control mode or DemandSrc is set to HumRoomDemand. Displays the supply high limit humidity demand value. Only appears if there is a single zone and ModHLProfile is set to an internal control mode or HighLimitSrc is set to RHSupplyHLDemand. Displays the status of the airflow switch. If Open is displayed, it indicates that the airflow is not detected by the air pressure switch. Displays the status of the high limit contact. If Open is displayed, it indicates that the humidity level has exceeded the setpoint on the high limit humidistat.

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Interlock: Pressure: InPressSwitch: ControlInput: ControlInput:
RoomTemp:
SupplyHLRH:
SupplyHLTemp:

WaterTemp:

Physical IO

WtrLeakDet:
DriveEnable: DriveStatus: DriveSignal: MotorSpeed: ContactorPump: AlarmRelay:
RelayFuse:
ServiceRelay: Valve1 Valve2 Valve3 Valve4 Valve5 Valve6 Valve7 Valve8 Valve9 Valve10 Valve11 Valve12

SysStatus:

System

Vendor:
Model: AppVersion: SerialNo: Profile:

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Closed
Current value Low Current value
Current value
Current value
Current value
Current value
Current value
Ok
Off Ok 0.000V Current value Off Off
Normal
Current value Off Off Off Off Off Off Off Off Off Off Off Off
Operational
Neptronic 0.11.20230731 – SKH4 Controller

• (Closed, Open)
• (min: 0 psi, max: 10000 psi) (Low, Ok) (min: 0%, max: 100%) (min: -40.0°F, max: 302.0°F) [min: -40.0°C, max: 150.0°C] Units: C, F
• (min: -40.0°F, max: 302.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F
• (min: 0%, max: 100%)
• (min: -40.0°F, max: 302.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F
• (min: 32.0°F, max: 257.0°F) * [min: 0.0°C, max: 125.0°C] Units: C, F
• (Ok, Leak)
• (Off, On) (Ok, Fault) (min: 0.000V, max: 10.000V) (min: 0%, max: 100%) (Off, On) * (Off, On)
• (Normal, Blown Fuse)
• (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) * (Operational, Operational Read-Only, Download required, Download in progress, Nonoperational, Backup in progress)
• • • *SKH4 Controller

Displays the status of the interlock. If Open is displayed, it indicates that the humidifier is stopped as a result of the interlock safety being open. Displays the value of the pump pressure. Displays the status of inlet pressure switch. Displays the current control input humidity reading.
Displays the current control input temperature reading.
Displays the room temperature reading value. (Only appears if ControlProfile is set to InternAnalog or RoomRHSrc is set to RoomRH.) Displays the supply high limit humidity reading value. Displays the supply high limit temperature reading value. (Only appears if ModHLProfile is set to InternAnalog or SupplyHLReadingSrc is set to SupplyHLRH.)
Displays the temperature of water in the evaporation chamber.
Displays whether a water leak has been detected. If Leak is displayed, it indicates that there is a leak within the water line. Displays the status of the drive enable. Displays the status of drive. Displays the value of the drive signal. Displays the value of the motor speed. Displays the status of the contactor pump. Displays the status of the alarm warning relay. Displays the current status of the PCB fuse. If Blown Fuse is displayed, the fuse must be replaced. Displays the status of the service warning relay. Displays the status of the valve 1. Displays the status of the valve 2. Displays the status of the valve 3. Displays the status of the valve 4. Displays the status of the valve 5. Displays the status of the valve 6. Displays the status of the valve 7. Displays the status of the valve 8. Displays the status of the valve 9. Displays the status of the valve 10. Displays the status of the valve 11. Displays the status of the valve 12.
Displays the current system status.
Displays the name of the vendor of the product. (Always Neptronic) Displays the humidifier model name. Displays the current application software version. Displays the serial number of the humidifier. Displays a short profile for the configured device.

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System

MCULoad: MemoryLoad: Runtime:
ResetReason:

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Current value Current value Current value
None

• (min: 0%, max: 100%) (min: 0%, max: 100%) (min: 0 sec, max: 999999999 sec)
• (None, BOR, Pin, POR, Soft, IWDG, WWDG, LPWR, Unknown)

Displays the current microcontroller load.
Displays the current memory load.
Displays the number of seconds that the system has been powered on. This value is reset every time the system is shut off.
Displays the reason for the previous system reset: None = No Reset; BOR = Brownout Reset; Pin = Pin Reset (using PCB Reset Button); POR = Power-on Reset; Soft = Software Reset; IWDG = Independent Watchdog; WWDG = Windowed Watchdog; LPWR = Low Power Reset; Unknown = Unknown Cause

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SKH4 High-Pressure Atomizer
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Menu – User Settings [Level 2 – Requires level 2 (or higher) password in order to access]

Sub-Menu

Setting

Command

DrainSchedule: OccupSchedule:

Default –

Range
00:00 Monday to Sunday Event 1 to Event 6
00:00 Monday to Sunday Event 1 to Event 6

RoomTempDemandLoop [3]

OccStp:

40.0%

min: 0.0%, max: 100.0%

UnocStp: VacantStp:

30.0% 20.0%

TempSupplyHLLoop [3]

min: 0.0%, max: 100.0% min: 0.0%, max: 100.0%

OccStp:

80.0%

Control

UnocStp: VacantStp:

30.0% 20.0%

RoomRHDemandLoop [3]

min: 0.0%, max: 100.0% min: 0.0%, max: 100.0% min: 0.0%, max: 100.0%

OccStp:
UnocStp: VacantStp: RHSupplyHLLoop [3]

40.0%

min: 0.0%, max: 100.0%

30.0% 20.0%

min: 0.0%, max: 100.0% min: 0.0%, max: 100.0%

OccStp:

System

UnocStp:
VacantStp: UTCOffset: -300min DaylightSavings: No
LocalDateTime:

80.0%

min: 0.0%, max: 100.0%

30.0%
20.0%
-300min
No YYYYMM-DD 00:00:0

min: 0.0%, max: 100.0% min: 0.0%, max: 100.0% min: -720min, max: 720min No, Yes

Description/Notes
Create a customized draining schedule with up to six events per day.
Create a customized occupancy schedule with up to six events per day.
Only appears if there is a single zone and ControlProfile is set to an internal control mode or DemandSrc is set to TempRoomDemand. Define the room temperature demand setpoint value used during Occupied state. Only appears if there is a single zone and RoomTempDemandLoopStptSrc is set to Internal.
Define the room temperature demand setpoint value used during Unoccupied state. Define the room temperature demand setpoint value used during Vacant state. Only appears if there is a single zone and ModHLProfile is set to an internal control mode or HighLimitSrc is set to TempSupplyHLDemand. Define the supply high limit temperature demand setpoint value during Occupied state. Only appears if there is a single zone and TempSupplyHLLoopStptSrc is set to Internal. Define the supply high limit temperature demand setpoint value used during Unoccupied state. Define the supply high limit temperature demand setpoint value used during Vacant state. Only appears if there is a single zone and ControlProfile is set to an internal control mode or DemandSrc is set to HumRoomDemand.
Define the room humidity demand setpoint value used during Occupied state. Only appears if there is a single zone and RoomRHDemandLoopStptSrc is set to Internal.
Define the room humidity demand setpoint value used during Unoccupied state.
Define the room humidity demand setpoint value used during Vacant state. Only appears if there is a single zone and ModHLProfile is set to an internal control mode or HighLimitSrc is set to RHSupplyHLDemand. Define the supply high limit humidity demand setpoint value during Occupied state. Only appears if there is a single zone and RHSupplyHLLoopStptSrc is set to Internal. Define the supply high limit humidity demand setpoint value used during Unoccupied state. Define the supply high limit humidity demand setpoint value used during Vacant state.
Configure the value of the UTC offset.
Select whether to enable daylight savings or not.
Configure the current date and time.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Interface

LocalDisplay [5] BacklightLvl: Contrast: MenuTimeout: KeypadBuzzer Language: Units:

25% 10% 300sec Inactive English Imperial

min: 0%, max: 100% min: 0%, max: 30% min: 30sec, max: 1800sec Inactive, Active English, French, Spanish Metric, Imperial

Select the backlight level of the LCD screen.
Select the contrast level of the LCD screen.
Set the value of the local menu timeout. Select whether to enable or disable the key press sound. Select the device language. Select whether to use a metric or imperial system of units for the local device.

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SKH4 High-Pressure Atomizer
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Menu – Service [Level 3 – Requires level 3 (or higher) password in order to access]

Sub-Menu

Setting

Status

OnTime: ServOnTime: Stage1 to 6 [5] CycleCount: RunTime: OnTime:
IdleTime:

DrainTime:
Drain1 to 6 [1] CycleCount:
Command Request:

Default 0.00hr 0.00hr

Range ( indicates no configuration;
display only)

Description/Notes
Displays the total operating time of the unit. Displays the operating time of the unit, since the last servicing.

0

0.00hr

0.00hr

0.00hr

0sec

Displays the total cycle count of the stage valve.
Displays the total runtime of the unit.
Displays the total operating time of the unit.
Displays the amount of time the humidifier can remain in standby mode until an automatic drain cycle is performed.
Displays the frequency of the drain cycle. In general, a more frequent drain cycle is required as the water hardness level rises. The drain cycle setting does not affect the AFEC system.

0 None

• None, ResetAlarms, ResetServCnt

Drain,

Displays the total cycle count of the drain valve.
Perform one of the following actions for the humidifier: reset warning alarms, initiate a drain cycle, reset service counters.

DiagState:

• (Off, On)

Displays the diagnostic state

Set the status of the diagnostic state.

DiagCmd: DiagPeriod: DiagTimer: Diagnostic Stage1Enable: Stage2Enable: Stage3Enable: Stage4Enable: Stage5Enable: Stage6Enable:

• (Spray, Drain) (min: 1min, max: 60min) (min: 0sec, max: 3600sec) * (No, Yes)
• (No, Yes)
• (No, Yes)
• (No, Yes)
• (No, Yes)
• (No, Yes)

Displays the diagnostic command
Displays the maximum diagnostic time to remain active
Displays the remaining diagnostic time to remain active
Displays whether diagnostic stage 1 is active
Displays whether diagnostic stage 2 is active
Displays whether diagnostic stage 3 is active
Displays whether diagnostic stage 4 is active
Displays whether diagnostic stage 5 is active
Displays whether diagnostic stage 6 is active

Set the status of the diagnostic command. Set the value for the diagnostic period. Set the value of the diagnostic timer. Set the status of the stage 1 diagnostic enable. Set the status of the stage 2 diagnostic enable. Set the status of the stage 3 diagnostic enable. Set the status of the stage 4 diagnostic enable. Set the status of the stage 5 diagnostic enable. Set the status of the stage 6 diagnostic enable.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Menu – Installation [Level 4 – Requires level 4 (or higher) password in order to access]

SubMenu Quick Config
Control

Setting ZoneA to D [1]:
StgOpenDelay: Stage1 to 6 [6]:
Capacity: Zone: Drain: MaxOnTime: PauseTime: DrainVolume:
ControlProfile:

Default
0 500l/h ZoneA Drain11 0sec 15sec 10l
ExternAnalog

ModHLProfile: UnitControl [4] NtwkTimeout:

Disabled 900sec

DemandSrc:

None

HighLimitSrc:

None

BinDemandSrc:

None

RoomTempDemandLoop [6]

PropGain: ITime: DTime: PropBand:

20.0 0.0sec 0.0sec 5.0%

TempSrc:

None

StptSrc: TempSupplyHLLoop [6]

None

PropGain:

10.0

Range (* indicates no configuration;
display only)

Description/Notes

min: 0, max: 30

Set the value of the stage open delay.

min:0l/h, max: 3000l/h ZoneA, ZoneB, ZoneC, ZoneD, ZoneE, ZoneF Drain7, Drain8, Drain9, Drain10, Drain11, Drain12
min: 0sec, max: 1200sec
min: 0sec, max: 1200sec
min: 0l, max: 9999999l
ExternAnalog, ExternNetwork, InternAnalog, InternNetwork, TRUB, Custom

Disabled,

ExternAnalog,

ExternNetwork, InternAnalog,

InternNetwork, Custom

Set the value of the capacity.
Select the zone.
Select the drain.
Set the maximum value of the operating time of the unit.
Set the value of the pause time of the unit.
Set the volume of water that is drained from the chamber. Select a preconfigured control mode profile for the modulating humidity demand. Select the Custom option to configure individual settings. (Network option only applicable for BACnet models.) Select a preconfigured control mode profile for the modulating high limit demand. Select the Custom option to configure individual settings. (Network option only applicable for BACnet models.)

min: 1sec, max: 900sec

None,

ControlInput,

HumRoomDemand,Network,

TempRoomDemand

None,

ControlInput,

RHSupplyHLDemand,Network,

TempSupplyHLDemand

None, BinaryExtDemand

min: 1.0, max: 200.0 min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min: 1.0%, max: 100.0%
None, TempRoom, Network, HRL
None, Internal, ControlInput

min: 1.0, max: 200.0

Define the amount of time the humidifier may attempt to connect to the BACnet or Modbus network before it stops operating due to a communication error. (Only appears if there is a single zone and ControlProfile and ModHLProfile are set to InternNetwork or ExternNetwork.)
Select the humidity control demand source for modulating humidifiers. (Network option only applicable for BACnet models.)
Select the humidity control high limit source for modulating humidifiers. (Network option only applicable for BACnet models.)
Select the humidity control demand source for On/Off humidifiers.
Only appears if ControlProfile is set to an internal control mode and DemandSrc is set to TempRoomDemand.
Set the value of the room demand proportional gain.
Set the value of the room demand integral time.
Set the value of the room demand derivative time.
Set the value of the room demand proportional band.
Select the reading source for the room temperature demand. (Network option only applicable for BACnet models.)
Select the room demand setpoint source.
Only appears if ModHLProfile is set to an internal control mode and HighLimitSrc is set to TempSupplyHLDemand.
Set the value of the supply high limit demand proportional gain.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

IntgrlTime: DrvtveTime: ProbBand:

0.0sec 0.0sec 10.0%

TempSrc:

None

Control

StpntSrc:

None

RoomRHDemandLoop [6]

PropGain: ITime: DTime: PropBand:

20.0 0.0sec 0.0sec 5.0%

RHSrc:

None

StptSrc: RHSupplyHLLoop [6]

None

PropGain: IntgrlTime: DrvtveTime: ProbBand:

10.0 0.0sec 0.0sec 10.0%

RHSrc:

StpntSrc: ControlInput [6] Signal:

ControlInput:

Min:

Physical IO

Max: Bias: SignalType: RoomRH [6] Signal:

RoomRH:

Min:

Max:

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None None
0.000V 0.0% 0.0% 100.0% 0.0% 0-10Vdc
0.000V 0.0% 0.0% 100.0%

min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min: 1.0%, max: 100.0%
None, SupplyHLTemp, Network None, Internal, ControlInput
min: 1.0, max: 200.0 min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min: 1.0%, max: 100.0% None, RoomRH, Network, HRL None, Internal, ControlInput
min: 1.0, max: 200.0 min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min: 1.0%, max: 100.0%
None, SupplyHLRH, Network None, Internal, ControlInput

Set the value of the supply high limit demand integral time.
Set the value of the supply high limit demand derivative time.
Set the value of the supply high limit demand proportional band.
Select the reading source for the supply high limit temperature demand. (Network option only applicable for BACnet models.)
Select the supply high limit demand setpoint source.
Only appears if ControlProfile is set to an internal control mode and DemandSrc is set to HumRoomDemand.
Set the value of the room demand proportional gain.
Set the value of the room demand integral time.
Set the value of the room demand derivative time.
Set the value of the room demand proportional band.
Select the reading source for the room humidity demand. (Network option only applicable for BACnet models.)
Select the room demand setpoint source.
Only appears if ModHLProfile is set to an internal control mode and HighLimitSrc is set to RHSupplyHLDemand.
Set the value of the supply high limit demand proportional gain.
Set the value of the supply high limit demand integral time.
Set the value of the supply high limit demand derivative time.
Set the value of the supply high limit demand proportional band.
Select the reading source for the supply high limit temperature demand. (Network option only applicable for BACnet models.)
Select the supply high limit demand setpoint source.

• (min: 0.000V, max: 15.000V)
• (min: 0.0%, max: 100.0%)
  min: 0.0%, max: 100.0%
  min: 0.0%, max: 100.0% min: -10.0%, max: 10.0% 0-10Vdc, 2-10Vdc, 4-20mA, 020mA

Displays the value of the control demand analog input signal.
Displays the actual value of the control demand analog input.
Set the minimum value of the control demand analog input.
Set the maximum value of the control demand analog input.
Set the bias value for the control demand analog input.
Select the signal type for the control demand analog input.

• (min: 0.000V, max: 15.000V * (min: 0.0%, max: 100.0%) min: 0.0%, max: 100.0% min: 0.0%, max: 100.0%

Displays the value of the room humidity analog input signal.
Displays the actual value of the room humidity analog input.
Set the minimum value of the room humidity analog input.
Set the maximum value of the room humidity analog input.
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SKH4 High-Pressure Atomizer
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Bias: SignalType: SupplyHLRH [6] Signal: SupplyHLRH: Min: Max: Bias: SignalType: SupplyHLTemp [6] Signal:
SupplyHLTemp:

Physical IO

Min: Max:

Bias:
SignalType: RoomTemp [6] Signal: RoomTemp:
Min:
Max:

Bias:

SignalType:

System ResetFactory:

Extended Config

InstallationDate: AlarmBuzzer:

0.0% 0-10Vdc

min: -10.0%, max: 10.0%
0-10Vdc, 2-10Vdc, 4-20mA, 020mA

Set the bias value for the room humidity analog input.
Select the signal type for the room humidity analog input.

0.000V 0.0% 0.0% 0.0% 0.0% 0-10Vdc

• (min: 0.000V, max: 15.000V)
• (min: 0.0%, max: 100.0%)
  min: 0.0%, max: 100.0%
  min: 0.0%, max: 100.0%
  min: -10.0%, max: 10.0% 0-10Vdc, 2-10Vdc, 4-20mA, 020mA

Displays the value of the duct or supply high limit humidity analog input signal.
Displays the actual value of the duct or supply high limit humidity analog input.
Set the minimum value of the duct or supply high limit humidity analog input.
Set the maximum value of the duct or supply high limit humidity analog input.
Set the bias value for the duct or supply high limit humidity analog input.
Select the signal type for the duct or supply high limit humidity analog input.

0.000V
68.0°F [20.0°C] 32.0°F [0.0°C] 104.0°F [40.0°C] 0.00°F [0.00°C] 0-10Vdc

• (min: 0.000V, max: 15.000V)
• (min: -40.0°F, max: 30-2.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F
• (min: -40.0°F, max: 30-2.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F
• (min: -40.0°F, max: 30-2.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F
  min: -18.00°F, max: 18.00°F [min: -10.00°C, max: 10.00°C] Units: °C, °F
  0-10Vdc, 2-10Vdc, 4-20mA, 020mA

Displays the value of the duct or supply high limit temperature analog input signal.
Displays the actual value of the duct or supply high limit temperature analog input.
Set the minimum value of the duct or supply high limit temperature analog input.
Set the maximum value of the duct or supply high limit temperature analog input.
Set the bias value for the duct or supply high limit temperature analog input.
Select the signal type for the duct or supply high limit temperature analog input.

0.000V 68.0°F [20.0°C] 32.0°F [0.0°C] 104.0°F [40.0°C] 0.00°F [0.00°C] 0-10Vdc
No
YYYY/MM/DD
Disabled

• (min: 0.000V, max: 15.000V
• (min: -40.0°F, max: 30-2.0°F) [min: -40.0°C, max: 150.0°C] Units: C, F (min: -40.0°F, max: 30-2.0°F) [min: -40.0°C, max: 150.0°C] Units: C, F (min: -40.0°F, max: 30-2.0°F) * [min: -40.0°C, max: 150.0°C] Units: C, F min: -18.00°F, max: 18.00°F [min: -10.00°C, max: 10.00°C] Units: °C, °F 0-10Vdc, 2-10Vdc, 4-20mA, 020mA
  No, Yes
  Normal, Disabled

Displays the value of the room temperature analog input signal.
Displays the actual value of the room temperature analog input.
Set the minimum value of the room temperature analog input.
Set the maximum value of the room temperature analog input.
Set the bias value for the room temperature analog input.
Select the signal type for the room temperature analog input. Select Yes in order to reset the humidifier back to its original factory configuration settings. WARNING: There is no way to recover previous configurations once the device has been reset. Set the device installation date. Select whether to enable or disable the alarm buzzer sound whenever there is a system warning. This will not affect the Status Display LED.

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SKH4 High-Pressure Atomizer
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SysLogLevel:

CtrlSource:

Extended Config

PowerUpDrain CoolDrainMode CoolDrainTimer LoWatTempAlarm:
ServInterval:

RunWhileServiceAlarm:
ZoneAMAC: ZoneBMAC: ZoneCMAC: ZoneDMAC:

Debug
Pump Board Off Off 30min Alarm 1000hr
Allowed
1 2 3 4

None, Emergency, Alert, Critical, Error, Warning, Notice, Info, Debug Zone controller, Pump Board, BMS Off, On Off, TimeLatch Min: 0min, max:60 Alarm, Warning
min: 1000hr, max: 3000hr
NotAllowed, Allowed
min: 0, max: 127 min: 0, max: 127 min: 0, max: 127 min: 0, max: 127

Select the type of information to be stored on log file. (The humidifier must be connected to an SD card.)
Select the control source.
Select Yes to perform drain on Power Up Select the control mode for the cooling drain. Set the value of the cool drain timer. Select the status of the low water temperature alarm. Set the time of operation before the humidifier calls for servicing. Select whether to enable the unit to continue producing steam, even when it is due for servicing. When set to Allowed, the unit will continue operating even when a service alarm is active. Set the value of the MAC address for zone A. Set the value of the MAC address for zone B. Set the value of the MAC address for zone C. Set the value of the MAC address for zone D.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Menu – Integration [Level 5 – Requires level 5 password in order to access]

Sub-Menu

Setting

NtwrkOption:
Device [4] DeviceName: Location: Description: DeviceInstance:
HTTPServer [1] HttpServerUnits:
BACnetServer [3] Language: ListMode:
Units:
BACnetMSTP [10]

MaxMaster:

Network

MaxInfoFrames:

AutoBaud: BaudRate: MAC: RxValid: RxInvalid: RxLost: Tx: TxLost: BACnetIP [6] RxValid: RxInvalid: RxLost: Tx: TxLost:
BACnetIPPort:
ModbusServer [1] Units:

Default BACnet

Range (* indicates no configuration;
display only)
BACnet, Modbus

Description/Notes
Select whether to connect to a BACnet MS/TP or Modbus RTU communication interface on terminal TB2 of the humidifier PCB.

–
–
0153001 (0x000255a9)

Establish a name for the device. Establish a designated location for the unit. Establish a brief description for the unit.
Define the device instance value.

Imperial
English Integrator Imperial
127
1
Yes 38400 001 0 0 0 0 0
0 0 0 0 0 47808
Imperial

Metric, Imperial
English, French, Spanish Integrator, Advanced, Factory Metric, Imperial
min: 1, max: 127
min: 1, max: 100
No, Yes 9600, 19200, 38400, 76800 *

• • • • • min: 0, max: 65535
          Metric, Imperial

Select whether to use a metric or imperial system of units for the web server.
For models connected to the BACnet network.
Select the language for the BACnet server.
Select the category of BACnet objects to display.
Select whether to use a metric or imperial system of units for the BACnet server.
Only appears if NtwrkOption is set to BACnet.
Configure MaxMaster value to increase network efficiency when there are less than 127 devices on the network. For optimal efficiency, set value to the highest MAC address in the MS/TP network.
Configure the maximum number of information messages the controller may transmit, before it must pass the token to the next controller.
Enable or disable automatic baud rate detection.
Select the baud rate for data transfer.
Set the MS/TP network MAC address.
Displays information on the received communication frames for troubleshooting purposes.
Displays information on the transmitted communication frames for troubleshooting purposes.
For models connected to BACnet IP.
Displays information on the received communication frames for troubleshooting purposes.
Displays information on the transmitted communication frames for troubleshooting purposes.
Set the User Datagram Protocol (UDP) port number. BACnet port number is set by default.
For models connected to Modbus.
Select whether to use a metric or imperial system of units for the Modbus server.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

ModbusRTU1In [4] MAC: Autobaud:
PortConfig:
BaudRate: BACnetETH [5] RxValid: RxInvalid: RxLost: Tx: TxLost: ModbusTCPIP0In [2] KeepAliveTimeOut:
ListeningPort: SMTP [7]

Network

SSL:

Port:

ServerAddr:
From:
To: Username: Password: Notify [3] Alarm:

Warning:

AppMsg:

Communica tion

IPSettings[10] DHCP:

1 Yes
No Parity, 2 Stop Bits 19200

min: 1, max: 247
No, Yes
No Parity, 2 Stop Bits Even Parity, 1 Stop bit Odd Parity, 1 Stop bit 9600, 14400, 19200, 38400, 57600

Only appears if NtwrkOption is set to Modbus. Set the Modbus MAC address. Enable or disable automatic baud rate detection.
Select the Modbus communication port configuration.
Select the baud rate for data transfer.

For models connected to BACnet Ethernet.

0

0

0

0

0

Displays information on the received communication frames for troubleshooting purposes.
Displays information on the transmitted communication frames for troubleshooting purposes.

For models connected to Modbus TCP/IP.

5min 502

min: 1min, max: 1440min min: 0, max: 65535

Set the amount of time the communication stays open before connection is cut out, when no signal is received from the device.
Set the communication port number. Modbus TCP port number is set by default.

Off

Off, On

25

25, 587

192.168.100.1 00 Current value
Current value Current value Current value

If turned to On, a secure socket layer will be used to encrypt the communication between the device and the email server (Port value must be set to 587 and Username and Password settings must be filled out). If turned to Off, the default socket will be used (use Port 25 to use server without login account or Port 587 if login details for email account have been entered).
If set to 25, server to server email transfer is enabled (can only be used if SSL is set to Off). If set to 587, client to server email transfer is enabled.
Configure the server IP address for the email account.
Set the email address that will be sending the humidifier notification messages.
Set the email address that will be receiving the humidifier notification messages.
Set the login username for the email account.
Set the login password for the email account.

Off

Off, On

Off

Off, On

Off

Off, On

If turned to On, then the humidifier alarm messages will be sent to the email configured in the SMTP sub-menu.
If turned to On, then the humidifier warning messages will be sent to the email configured in the SMTP sub-menu.
If turned to On, then the humidifier event messages will be sent to the email configured in the SMTP sub-menu.

Inactive

Inactive, Active

Select whether to enable Dynamic Host Configuration Protocol (DHCP) to automatically provide an IP address.

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RstIPSetting:

No

No, Yes

StaticAddress: StaticSubnetMask:
StaticDefaultGateway:
StaticDnsServer: ActualAddress: ActualSubnetMask:
ActualDefaultGateway:
ActualDnsServer: ETHSettings[1]

192.168.1.100 255.255.255.0 192.168.0.100 192.168.10.50 Current value Current value Current value Current value

EthernetMacAdd:

Current value *

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Select whether to restart the IP module, in order to allow recent parameter modifications to be effective. Configure the static IP address. Configure the static subnet mask. Configure the static default gateway. Configure the static DNS server. Displays the actual IP address. Displays the actual subnet mask. Displays the actual default gateway. Displays the actual DNS server.
Displays the MAC address of the Ethernet interface. (Only applicable if using an Ethernet connection.)

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

List of Alarms and Warnings

Table 13 – List of Alarms

Display

Description

Alarm Reset

For each Zones

AirFlow (Zone A to D)
SupplyHighLimit (Zone A to D)
Interlock (Zone A to D)

Indicates that the airflow sensor (of Zone A to D) is open. Verify that the signal from the airflow sensor is present at the controller’s input on the PCB and verify wiring.
Indicates that the high limit item (of Zone A to D) is open. Verify that the signal from the supply high limit sensor is present at the controller’s input on the PCB and verify wiring.
Indicates that the interlock and the cut-out circuitry (of Zone A to D) are open. Verify that the signal from the interlock sensor is present at the controller’s input on the PCB and verify wiring.

Pump Unit Alarms

HighLimitCutout

Indicates that the high limit cutout has been activated due to a reading that exceeds the high limit setpoint. Ensure that the high limit humidistat is operating correctly and is not located too close in proximity to the distribution apparatus.

RelayFuse

Indicates that there is an issue with the printed circuit board fuse. Check the status of the fuse and replace it if defective.

Airflow

Indicates that the airflow sensor is open. This fault does not trigger the alarm contact (no message will be displayed) but will prevent the SKH4 from running. Verify that the signal from the airflow sensor is present at the controller’s input on the PCB and verify wiring.

SupplyHighLimit

Indicates that the high limit item is open. Verify that the signal from the supply high limit sensor is present at the controller’s input on the PCB and verify wiring.

Interlock

Indicates that the interlock and the cut-out circuitry are open. This fault does not trigger the alarm contact (no message will be displayed) but will prevent the SKVF from running. Verify that the signal from the interlock sensor is present at the controller’s input on the PCB and verify wiring.

MemoryCard (Warning)

Indicates that the SD card has been detected, but it is not operating correctly or is non-functional. Verify the SD card and replace if defective.

USB Device (Warning)

Indicates that the USB device has been detected, but it could not be read or is not operating correctly. Verify the functionality of the USB device and replace if defective.

WatHiTemp

Indicates that the water temperature is above the MaxWatTemp, which causes the humidifier to exit the spray state and perform a drain in order to lower the temperature and resume operation. If the temperature is still too high, an alarm will trigger and demand a manual reset.

WatLoTemp

Indicates that the water temperature is below the MinWatTemp, causes the humidifier to exit spray state.

OutHiPress

Indicates that the water pressure has raised above the MaxHighPress, causes the humidifier to exit spray state.

OutLoPress

Indicates that the water pressure has fallen below the MinHighPress, causes the humidifier to exit spray state.

InLowPress

Indicates that the low-pressure switch is open for the time greater than WaterInletPressDelay during the operation of the humidifier.

WaterLeak

Indicates that a water leak has been detected. Verify the water line for signs of leaks and ensure that all piping and water connections have been properly installed and secured.

Config

Indicates that the configuration is not valid in factory settings. For example, at least one stage is not enabled, or a drain stage is not enabled.

NtwkCtrlState

Indicates that the communication attempt to the BMS server has exceeded the delay defined by the NtwkTimeout setting. Verify the wiring between the humidifier and the BACnet or Modbus network and ensure proper connection. (Only applicable for units connected to BACnet or Modbus).

ServiceDue

Indicates that the due date for servicing the SKH4 unit has arrived. See Servicing and Maintenance section on page 55 for details.

• Use the ResetAlarms function in the Request setting (see page 36). ** Use the ResetServCnt function in the Request setting (see page 36).

Automatic Automatic Automatic
Automatic Automatic Automatic Automatic Automatic Automatic Automatic Manual Manual Manual Manual Automatic Manual Automatic
Manual
Manual ***

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Distribution Installation
Refer to Neptronic’s guideline in Space Mist Humidification Design for additional information and recommendations on the design of a hydraulic distribution network. Consult the respective design guides for each of the three distribution techniques.
Spraying in Space (Standard)
An in-space hydraulic network is made up of piping that starts at the stage valve and goes towards the drain valve. Along this run of pipe, single nozzles, or fan-assisted distributors (optional), can be placed in order to spray directly into the area.
· Plan a location that is easy to access and permits easy inspection and servicing of the nozzles. · The hose used must be stainless steel tubing or flexible nylon hose. It must be appropriately sized for the flow
and the in-line pressure. · Hoses must be maintained/attached securely and must not move when pressure is applied. · Do not install the ramp and nozzle where failure of the system could cause damage to the building structure or
to other expensive equipment. · Ensure that the mist is not directed and or at risk of condensing on any equipment.

Illustration 17 – Typical Installation with Rigid Nozzle Ramp
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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
High-pressure water outlets use a 3/8″ (DN10) or 1/2″ (DN15) flexible high- pressure nylon hose (available upon request) connected to a push-to-connect fittings (available upon request) with the respective stage and drain valves.

Illustration 18 – Typical Installation with Flexible Nylon Hose

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Spraying in Space with Fan-Assisted Distributors
· Plan a location that is easy to access and permits an easy inspection and servicing. · Do not install the distributors where failure of the system could cause damage to the building structure or to
other expensive equipment. · Ensure that the mist is not directed and condensed on any equipment, especially the electrical equipment. · Respect clearances for absorption specified in the fan assisted design guide.

Water high pressure outllet

T push-on fittings (not supplied)

Water inlet

All MDU s are connected in series along the flexible hose line

Illustration 19 – Fan-Assisted Distributors Typical Installation

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Ceiling Installation
To install the MDU to the ceiling, connect two metallic suspension cables (not supplied) to the three rings. Verify the strength of the cables and ensure that they can support the weight of the distributor (see table) before commencing installation.

Y-fit suspension cable (not supplied)
Plumbing connection (not supplied)

Electrical connection

Suspension cable (not supplied)

Illustration 20 – ADU Ceiling Installation
Wall Installation
To install the distributor to the wall, fasten with screws (not supplied) to a suitable location: · Check the solidity of the chosen support or wall (brick, concrete, or stud partition wall) on which the distributor remote panel will be mounted. · Drill holes matching the hole of the support into the support or wall (anchors not supplied): · Ensure that the hole dimensions (diameter and depth) adhere to the recommendations of the chosen anchors. If required, you can install and then bolt the anchors. · Affix screws (not supplied) with a minimum diameter of 0.23″ (6mm) to all fixation points. · Adjust the positioning of the distributors and lock in place using the fixation hardware on the distributors.

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Fan assisted Power Supply Connections

L1

120V 1PH

N

SKH4 STAGE TRUB MDU

SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Fuse
120VAC / 24VAC
Fuse

240V 1PH SKH4 STAGE TRUB FAN
MDUs

Stages Illustration 21 – 120V Power supply Connections

L1

L2

Fuse

Fuse

240VAC / 24VAC

Fuse

Stages Illustration 22 – 240V Power supply Connections

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Spraying in Duct
· Plan a location that is easy to access and permits an easy inspection and servicing of the nozzle. · Do not install the ramp and nozzle where failure of the system could cause damage to the building structure or
to other expensive equipment. · Ensure that the mist is not directed and condensed on any electrical equipment. · Construct the drainpipe in such a way that there is no water accumulation and stagnation. · The wet section of the duct must be constructed in stainless steel in order to prevent corrosion and must be
equipped with a pan drain outlet in order to remove any water residue. See guide for more details.

Illustration 23 – In Duct Distribution

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Optional ­ Remote Valve Panel (RVP)
WARNING: Risk of electric shock. Disconnect the appliance from the electric supply before commencing installation.
An optional remote panel serves two purposes. The first is to allow a connection for the fan-assisted distributors and a connection to the control wire to start the fan before the spraying action. The second is to allow for valves to be placed outside of the enclosure, to minimize the length of piping during installation. Control signal wires are connected from the pump unit’s PCB to the relays in this electrical panel in order to remotely activate the solenoid valves.

RVP Dimensions

Illustration 24 – Remote Valve Panel

Illustration 25 – RVP Dimensions Table 14 ­ Remote Valve Panel (RVP) Dimensions & Weight

Model
RVP 0 RVP 2 RVP 4 RVP 6

A 15 (381)

Dimensions in (mm) B 15 (381) 20 (508) 25 (635) 30 (762)

C 4 (101)

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Location
· Plan a location that is easy to access and permits an easy inspection and servicing of the RVP panel. · Do not install the RVP panel where failure of the valve could cause damage to the building structure or to
other expensive equipment. · Ensure that the location is ventilated appropriately and that the ambient temperature is less than 86°F (30°C).
Positioning
· There is no minimum clearance required for safety purposes. · Provide a minimum clearance of 31″ (0.80 m) in front of the RVP panel, in order to allow access to the
connections and servicing. · It is recommended (but not mandatory) to allow some clearances on both sides and on the top of the RVP
panel for ease of service.
Picture of RVP with clearances and keyhole wallmounting

31″ (0.8m)
Illustration 26 – RVP Clearance
Wall Mounting
· Use the keyholes located on the back of the RVP panel. · Check the solidity of the chosen support or wall (brick, concrete, or stud partition wall) on which RVP panel is
mounted. · Drill holes for the upper anchors (holes with keyholes) into the support or wall, as per dimensions specified in
the below table (anchors not supplied): · Ensure that the hole dimensions (diameter and depth) adhere to the recommendations of the chosen anchors.
If required, you can install and then bolt the anchors. · Affix two screws (not supplied) with a minimum diameter of 0.23″ (6mm) to the top keyholes. Leave a
clearance between the head screws and the wall to permit the mounting of the RVP panel. · Hang the RVP panel on the two screws. Based on the size and weight of the RVP panel, you may need the
assistance of another person. · Tighten the screws to secure the RVP panel once it is positioned on the upper screws. · Install and secure two screws (not supplied) onto the bottom screw holes of the RVP panel.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Start-Up Procedure
Once the installation is complete, follow this start-up procedure in order to ensure that the SKH4 High-Pressure Atomizer is ready for normal operation. We strictly recommend following this procedure in order to avoid any anomaly resulting from inaccurate installation of the components.
Initial verification and start-up must be carried out by suitably qualified personnel.

Initial Verification

Clearance

Ensure that the humidifier cabinet is installed in a location where it can be serviced correctly.

2. Ensure that the pump station is installed in a temperature-controlled environment of less than 86°F (30°C). Verify that the pump station is fixed securely to the ground and that it remains stable.

Mechanical 3. If an in-duct spray system is used, ensure that the nozzle rack assembly is correctly
installed within the AHU.

4. If an MDU or ADU is used for in-space spray distribution, ensure that it is correctly installed and secured onto the ceiling.

5. Verify that the pump station water connections are installed properly:

a) Ensure that water is supplied to the humidifier and that an isolation valve is installed on the water line. With the water isolation valve turned on, verify that there are no apparent leaks.
b) Ensure that the pan drain outlet is properly connected to a flexible hose and that it is directed towards an open drain. Verify that the water drainage is not obstructed. c) If using a SS pump, bleed the pump of air before starting the unit.
6. Verify that the zone hydraulic connections are installed properly:
Hydraulic
a) If an in-duct spray system is used, ensure that all nozzle ramps are properly connected and assembled onto the rack assembly.
b) If a standard in-space spray distribution system is used, ensure that all nozzles within the ramp have been connected in series and that they are properly secured.

c) If an in-space fan-assisted spray distribution system is used, ensure that all units are connected in series and that they are properly secured.

d) Ensure that isolation valves are opened on all the fan-assisted distributors

7. Verify that the power supply (voltage) conforms to the appliance name plate on the side of the humidifier.

8. Ensure that the Interlock is properly connected to the controller. If Interlock is not used, verify that a jumper is connected between terminals TB3 1&4.

Electrical

If a room or duct humidistat is used, verify that it is fixed securely to the wall or duct and to the pump unit, respectively, and ensure that it is properly connected to the

controller. Verify that the setpoints and the address are properly adjusted.

10. If a TRUB is used, verify that it is fixed securely to a support or wall located within the desired zone and ensure that it is properly connected to the pump unit. Verify that the setpoints are properly adjusted. Refer to the TRUB documentation for more information.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Diagnostic mode
If required, a diagnostic mode is accessible through the Service menu, the diagnostic mode allows manual activation and override of the SKH4. It’s possible to activate each stage without any demand to the pump. This allows for inspection, purging the air out of the line and validation of operation of a particular stage.
Alarms and interlocks coming from zone(s) are bypassed while manual override is active.
Enter the mode from the Service, Diagnostic mode. The function allows to select the action to drain or to pressurize the stage(s) selected below, and then to turn the action on or off.
First, select the command type (Spray or Drain), set desired time for test, and enable or disable the desired stage(s) manually. To turn on the action, change the DiagState to ON. Going out of the menu, changing Command type or the end of Period will turn the State back to Off. The exiting of the diagnostic state sends the SKH4 to its regular Off state.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Servicing and Maintenance

This humidifier must be installed, operated, and maintained by suitably qualified personnel and in accordance with this manual.
Before performing any servicing on the unit, turn off the disconnect and use Lock Out procedure.

Damage to the other parts of the SKH4 system are most often caused by particles or debris in the water. Ensure constant quality of water supplied to the unit. Inspection of parts of the pump unit and of the network of distribution is necessary to ensure the proper function of the system and to prevent leakage.

Preventative Maintenance

Component
Pressure manometers
Hydraulic pipes
Nozzles
Distributor fan (option) Droplet separator ­ Duct Distributor (option)

How Often is Maintenance Required
Every 2000 hours
Every 2500 hours (up to 5000 hours depending
on condition)

Maintenance Steps
– Inspect the high pressure and low pressure manometers in front of the unit and verify that the pressures match the ones indicated
under the pressure settings in the menu Menu – General [Level 1 – No password required] page 31.
– If the pressure is not the same, replace the high pressure or low pressure manometer.
– With the unit turned on, check for leaks coming from the water supply inlet, high-pressure outlet and zone distribution piping. – If a leak is found, replace the leaking pipes or fittings.
– With the unit turned on, verify if the nozzles are blocked during normal operation. – If the nozzles are blocked, disassemble them for inspection: a) If blocked by large particles, remove the particles and reassemble the nozzles. b) If blocked by the presence of mineral deposit or scale, replace the nozzles.
– With the unit turned on, verify whether the fan is operating correctly and without any problems. – Replace the motor fan if faulty operation is observed.
– Verify that the droplet separator is not being obstructed by scale. – If there is scale, proceed to de-scale the droplet separator as per the steps described in the De-scaling the Droplet Separator section.

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual

Preventive Maintenance (continued)

Component
Stainless Steel pump (SKH4-XXXXS models)
Brass pump (SKH4-XXXXB models)

How Often Maintenance is Required
Every week

Maintenance Steps
Visual inspection for the absence of water leaks. Verify that nominal pressure is normal for your system. Loss of pressure can be an indication that the distribution network needs servicing or the pump. Pump noise that degrades is also an indicator that maintenance is required. Removal of the pump to inspect the parts and replacing the O-ring is necessary to ensure the life of the pump. A replacement seal kit is available from the Neptronic factory. Contact customer service for the kit and detailed instructions.

Every 8000 hours

Disassembling and inspecting the pump: – Cut off the water supply and disconnect the hoses from the inlet and outlet of the pump. – Unscrew the fasteners of the bell housing from the motor and remove the pump from the bell housing. – Perform the disassembly of the pump on a clean work bench in order to prevent any contamination with particles or chemicals. – Follow the guide available from Neptronic. – Inspect all parts for wear or scratches

Reassembly – Lubricate all threads with a PTFE type lubricant. – At reassembly, lubricate all parts with clean filtered water. – Follow the guide for the reassembly and replacement of the seals with the parts from the kit. – Fastened to the bell housing, add the coupling, and place it back onto the motor, ensuring that the couplings mesh together.

Every week
Every 500 hours
Every 2500 hours (up to 8000 hours depending on condition) Every 5000 hours (up to 16000 hours depending on condition)

Restarting the unit: – Follow the steps outlined in the start-up section to restart the humidifier and ensure that it is operating correctly before resuming normal operation.
Visual inspection of the oil level through the sight glass, ensuring absence of water mixed in the oil and absence of any oil leaks. Ensure that nominal pressure is normal for your system. Loss of pressure can be an indication that the distribution network needs servicing or the pump. Pump noise that degrades is also an indicator that maintenance is required.
Oil change (~10min) – Unscrew both caps with a pan underneath the pump in order to catch the oil. Inspect the oil for debris or particles in it; if found, it can be an indicator of damage to the pump. – Screw back the bottom cap and fill the oil reservoir to at least the middle of the red dot. – Screw back the top cap. – Dispose of the oil properly according to the local regulations.
Seal replacement (~60min) – Refer to the detailed guide provided with the seal replacement kit from Neptronic.
Valve replacement (~60min) – Refer to the detailed guide provided with the seal replacement kit from Neptronic

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
Nozzle Cleaning
The SKH4 nozzles will eventually get clogged by the accumulation of scale and/or particles inside the tubing, resulting in a blocked or leaking nozzle which will require cleaning or replacement of the nozzle.
· A blockage of the nozzle will require cleaning the nose (#1) and plunger (#3). · A leakage will require the cleaning of the plastic ball (#4) and the seat inside of the body (#5). · Parts (#7,8 and 9) are optional PE filters and must be replaced whenever clogged. · The nozzles can be cleaned using light descaling agents such as acetic acid (vinegar) and a plastic brush.
Nozzle nose O-Ring Plunger
Spring-load Viton ball
Nozzle body
O-Ring PE filter
Filter body
O-Ring Illustration 27 – Nozzle Parts List

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SKH4 High-Pressure Atomizer
Installation Instructions and User Manual
De-scaling the Droplet Separator
Step 1 – Preparation · Refer to the manufacturer’s recommendations for concentrations to apply and the method of preparation of the solution. When using white vinegar (acetic acid), do not exceed a concentration of 250-260 ppm when descaling the media. · Ensure that the air system (central air or ventilation system) is stopped. · Ensure that the SKH4 is stopped.
CAUTION: When working with de-scaling solutions, always wear appropriate personal protective clothing, protective gloves, and eye protection.
Step 2 – Dismantle the Droplet Separator · Turn off and isolate electrical supplies to the unit. · Remove all media cassettes.
Step 3 – Prepare the De-scaling Solution
CAUTION: Risk of emanation of gas irritants, ensure to perform these tasks in a well-ventilated area. It is recommended to perform the following steps outside. · Mix the de-scaling solution according to the manufacturer’s recommendations. · Use a clean container of a suitable size to completely immerse each media cassette. · Ensure that a second clean container of a suitable size is within reach and has been filled with clean, clear water to immerse each cassette after de-scaling.
Step 4 – Remove Scale from Individual Cassettes · Using a soft brush, lightly brush any loose scale from the surface of the media. · Lower the individual cassettes into the de-scaling solution. · Keep each matrix cassette in the solution until the reaction between the calcium on the matrix and the descaling solution is complete. Note: The effect of the de-scaling solution will vary depending on the condition of the media’s material. For an improved effect, the above process may have to be repeated. · Clean and if necessary, apply the de-scaling solution on all parts which are covered with scale.
Step 5 – Rinse · Lift the individual cassettes out of the acid solution, while allowing any excess de-scaling solution to drip, and directly submerse them into the clean water container. · If necessary, rinse a second time while profusely wetting the media.
Step 6 – Re-assemble and Restart · Replace the media cassettes and media frames on the droplet separator. · Reconnect the power supply.

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400 Lebeau blvd, Montreal, Qc, H4N 1R6, Canada www.neptronic.com
Toll-free in North America: 1-800-361-2308 Tel.: 514-333-1433 Fax: 514-333-3163
Customer service fax: 514-333-1091 Monday to Friday: 8:00am to 5:00pm (Eastern Time)

References

• Neptronic | Home - Humidifier Distributor & HVAC Products

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