systemair KD 315 L1 Circular Duct Fans Instruction Manual

systemair KD 315 L1 Circular Duct Fans

Product Information

• Product Name: KD Circular duct fan
• Product Description: This user manual provides installation, operation, and maintenance instructions for the KD Circular duct fan.
• Intended Use: The KD Circular duct fan is designed for use in ventilation systems to circulate air through ducts.
• Product Overview: The KD fan is a circular duct fan that helps in efficient air circulation.
• Name Plate: The name plate on the product provides important information about the product, including the type designation.
• Product Liability: The manufacturer holds product liability for any defects or damages caused by the product.

Product Usage Instructions

Transportation and Storage
Before installation, ensure that the product is transported and stored in a safe and appropriate manner.

Installation

1. Prior to installation, make sure to complete the necessary preparations.
2. Follow the instructions provided to install the KD fans.
3. Connect the ducts to the product as per the instructions.

Electrical Connection

1. Before proceeding with electrical connections, follow the pre-electrical connection checklist.
2. Connect the product to the power supply according to the provided guidelines.
3. If using AC motors, consider using a speed controller for optimal performance.
4. For AC motors, install motor protection as specified to ensure safety.

Commissioning

1. Prior to commissioning, complete the necessary steps outlined in the manual.
2. Follow the instructions to perform the commissioning process.

Operation

1. To start a product with an AC motor, follow the recommended procedure.
2. To stop the product, follow the provided instructions.
3. In case of an emergency, refer to the emergency stop procedure specified in the manual.

Maintenance

1. Refer to the maintenance schedule provided for regular maintenance tasks.
2. Clean the product as per the cleaning instructions.
3. If any parts need replacement, refer to the spare parts section for guidance.

Troubleshooting
If you encounter any issues with the product, refer to the troubleshooting section for assistance.

Disposal
When necessary, follow the instructions provided to disassemble and discard the parts of the product responsibly.

Warranty
The product is covered by a warranty. Refer to the warranty section for details on coverage and claim procedures.

Technical Data

• Technical data overview provides important specifications and details about the product.
• Product dimensions are provided for reference.
• Wiring diagrams for KD and speed controller for AC motors are included for electrical connections.

Introduction

Product description

• This product is a circular duct fan with an airtight casing made from sheet metal.
• The product is supplied with an AC motor.
• The product is not supplied with a safety switch, external speed control, or FK fast clamps, these parts are available and recommended as accessories.

Intended use

• The product is used for transportation of clean or contaminated air with a maximum temperature of 70 °C and 95% air humidity.
• The product is intended for installation in indoor environments and wet rooms. It is also possible to install the product in outdoor environments with weather protection. The product is applicable for ambient temperatures of between -25 ° C and +70 °C.
• KD fans are made for installation in circular duct systems.
• The product is not applicable for transportation of air that contains explosive, flammable or aggressive media. The product is not applicable for locations where there is a risk of explosion.

Document description

• This document contains instructions for installation, operation and maintenance of the product. The procedures must be done by approved personnel only.
• Speak to Systemair for more information on how to install the product in different installation locations.

Product overview KD fan

1. Connection box
2. Airflow direction arrows
3. Name plate
4. Fan impeller
5. Casing
6. Mounting bracket

Name plate

1. Type designation: Product name, dimension and motor type. Refer to 1.5.1 Type designation.
2. Input power, W
3. Frequency, Hz
4. Certifications
5. Scannable code 1
6. Find more information about the product on the Systemair documentation portal1
7. Country of production
8. Airflow and rotation direction arrows
9. Scannable code 1
10. Weight, kg
11. Serial number: part number/production number/production date
12. IP class, enclosure class
13. Current, A
14. Voltage, V
    Note:
    The data on the name plate applies to “standard air” that is specified in the standard ISO5801.

Type designation

250M11
250L11
315M11
315L11
355S11
450XL1
Motor type| AC, 1–phase, 230 V

Product liability
Systemair is not liable for damages that the product causes in these conditions:

• The product is incorrectly installed, operated or maintained.
• The product is repaired with parts that are not original spare parts from Systemair.
• The product is used together with accessories that are not original accessories from Systemair.
• The product is used without motor protection.

Safety

Safety definitions
Warnings, cautions and notes are used to point out specially important parts of the manual.

Safety instructions

Warning
Read the warning instructions that follow before you do work on the product.

• Read this manual and make sure that you understand the instructions before you do work on the product.
• Obey local conditions and laws.
• The ventilation contractor and the operator are responsible for correct installation and intended use.
• Keep this manual at the location of the product.
• Do not install or operate the product if it is defective.
• Do not remove or disconnect safety devices.
• Make sure that you can read all warning signs and labels on the product when it is installed. Replace labels that have damage.
• Only permit approved personnel to work on the product and to be in the adjacent area during all work on the product.
• Make sure that you know how to stop the product quickly in an emergency.
• Use applicable safety devices and personal protective equipment during all work on the product.
• Before you do work on the product, stop the product and wait until the fan impeller stops. Make sure that there is no voltage on the motor terminals.
• If the maintenance is not correctly and regularly done, there is risk of injury and damage to the product.
• Only do the maintenance as given in this manual. Speak to Systemair technical support if other servicing is necessary.
• Always use spare parts from Systemair.
• Sound levels exceeding 70 dB(A) may occur depending on model and size. Visit www.systemair.com for more detailed information about your product.
• The product is not to be used by persons, including children, with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.
• Do not allow children to play with the device.

Personal protective equipment
Use personal protective equipment during all work on the product.

• Approved eye protection
• Approved protective helmet
• Approved hearing protection
• Approved protective gloves
• Approved protective shoes
• Approved work clothing

Transportation and storage

Warning
Make sure that the product does not become damaged or wet during transportation. A damaged or wet product can cause fire or electric shock.

• Before you move the product to the installation location, examine the packaging for damages.

• Do not move the product by the cables, terminal box, fan impeller, protection grille, inlet cone or silencer.

• If lifting equipment is used, make sure that the lifting equipment can hold the weight of the product. Refer to the name plate for information. Do not lift the product by the packaging.
  Warning
  Do not walk below a lifted product.

• Keep the correct side of the packaging up during transportation. Refer to the arrows on the packaging.

• Load and unload the product carefully.

• Keep the product in a dry and clean location during storage. Make sure that the ambient temperature during storage is between –10 and +30 °C. A stable ambient temperature prevents damage from condensation.

• Keep the product in storage for maximum 1 year.

Installation

To do before the installation of the product

• Make sure that you have the necessary installation accessories:

  • Refer to 13 Accessory overview for an overview of the accessories.
  • If you install the product outdoors, it is necessary to install a weather protection roof.
  • To decrease vibrations transmitted from the product to the duct system, Systemair recommends to install vibration dampers, fast clamps or flexible connections.
  • If you install the product with free suction or free discharge, it is necessary to install a protection grille.
    Make sure that the safety distance agrees with the standard DIN EN ISO 13857 and the standard DIN 24167–1.

• Use installation material with fire resistance rating for the installation location.

• Examine the packaging for transportation damage and remove the packaging from the product carefully.

• Examine the product and all components for damage.

• Make sure that the motor effect and the fan performance agrees with the expectations at the installation location.

• Make sure that the information on the name plate and the motor name plate agrees with the operation conditions.

• Install the product in a location where there is space for commissioning, troubleshooting and maintenance.

• Make sure that the installation location is clean and dry, for full safety during electrical work.

• Make sure that the installation surface has sufficient capacity to hold the weight of the product.

• Refer to the airflow direction arrows on the name plate or on the product to install the product in the correct position.

• Make sure that all cable glands are tight against the cables to prevent leaks.

To install the KD fans

1. Install pendulum bars or wires in the ceiling. Pendulum bars, wires and nuts are not supplied by Systemair.
2. Attach the pendulum bars or wires to the mounting brackets on the product casing.

To connect the ducts to the product

1. Put the ducts on each side of the product.

2. Use the fast clamps (A) to attach the duct to the product.
   Systemair recommends to use FK fast clamps to attach the duct to the product. The FK fast clamps are available as an accessory.
   Refer to13 Accessory overview .

3. Tighten the fast clamps (A) around the duct and the product with the supplied screws. Make sure that there is a distance between the duct and the product to decrease vibrations transmitted from the product to the duct system.

4. If you install the product near a duct bend, do these steps to prevent vibrations, unwanted noise and decreased air pressure:

   • A, Measure the distance (A) between the product and the duct bend.
   • B. Make sure that the distance (A) is a minimum of 2.5 x the diameter (B) of the duct system. For circular ducts, (B) is the nominal diameter. For rectangular ducts, (B) is the hydraulic diameter.

Electrical connection

To do before the electrical connection

• Make sure that the electrical connection agrees with the product specification on the motor name plate.
• Make sure that the environment for electrical connection is clean and dry.
• Make sure that the wiring diagram that is included with the supply of the product agrees with the terminals in the connection box.

To connect the product to the power supply

• Complete the electrical connection for the motor. Refer to the motor wiring diagram that is included with the product.
• Make sure that the cross section of the protective earthing is equal to or larger than the cross section of the phase conductor.
• Install a circuit breaker in the permanent electrical installation, with a contact opening of a minimum 3 mm at each pole.
• If a residual current device (RCD) is installed, make sure that it is an all-current sensitive RCD. Consider if the product has a frequency converter or uninterruptible power supply (UPS).

Speed controller for AC motors
Note:

• The speed controller alternatives are different for different motor types. Make sure that your motor is compatible with the speed controller type before you use it.
• The speed can be controlled by voltage reduction using a transformer. It is also possible to control the fan speed with frequency converter if the installed frequency converter has built in all-pole sine filter and shielded cables are not needed.

To install motor protection for AC motors

• If the product has an built in motor protection, reset by disconnecting the product from power for 60 seconds.
• If the motor has temperature monitors such as thermal contacts (TK) or thermistors lead out into the terminal box, these must always be connected in the control circuit using appropriate motor protection.
• Make sure that an overheated motor cannot start again automatically when it becomes cool.
• Install the motor cables and the temperature monitor apart.
• If the motor does not have temperature monitors, install a motor protection switch.

Commissioning

Caution

• If strong vibrations occur during commissioning, immediately increase or decrease the fan speed until the vibrations are decreased. Continuous strong vibrations can cause damage to components.
• Do not increase the fan speed to a higher rpm value than the maximum value that is given on the name plate.
  The commissioning report is found at www.systemair.com.

To do before the commissioning

• Make sure that the installation and electrical connection are correctly done.
• Visually examine the product and accessories for damage.
• Make sure that the safety devices are correctly installed.
• Make sure that there are no blockages in the air inlet and the air outlet.
• Make sure that installation material and unwanted objects are removed from the product and the ducts.

To do the commissioning

1. Set the installed safety switch in the OFF position.

2. If it is possible to get access to the fan impeller, do the steps that follows:

   • If it is necessary, remove parts of the installation.
   •  Turn the fan impeller by hand and make sure that it turn easily.
   • Record the result in the commissioning report.

3. Make sure to turn the product in a direction that agrees with the related arrow on the product.
   Record the result in the commissioning report.

4. If you removed parts of the installation to get access to the fan impeller, install the removed parts again.

5. Set the installed safety switch in the ON position.

6. Start the product.

7. Set the minimum operation speed.

8. Increase the operation speed gradually to the maximum operation speed.

   • Examine the vibrations in the casing and the bearing areas at all speed levels.
   • Make sure that the vibrations agree with the specifications in DIN ISO 14694.
   • Make sure that none of the speed levels cause unwanted noise in the product.
   • Record the result in the commissioning report.

9. Record the necessary data in the commissioning report.

Operation

To start a product with an AC motor

1. Set the installed safety switch in the ON position.
2. Install the external speed controller. Refer to the instruction manual for the installed speed controller.

To stop the product

1. Set the installed speed controller in the OFF position. Refer to the instruction manual for the installed speed controller.
2. Set the installed safety switch in the OFF position.

To stop the product in an emergency
Set the installed safety switch in the OFF position.

Maintenance

Warning
Set the installed safety switch in the OFF position before you do the maintenance unless the instructions tell you differently. Make sure that the safety switch is not accidentally set in the ON position.

Maintenance schedule
The intervals are calculated from continuous operation of the product.

Maintenance task| Usual operation conditions| Unusual operation conditions. 1
---|---|---
Each 6 months| Each year| Each 3 months| Each 6 months| Each year
Visually examine the product and its components for damage, corrosion and dirt.|  | X|  | X|
Examine the fan impeller for damage and imbalance.|  | X|  | X|
Clean the product and the ventilation system.| X|  | X|  |
Do a check of all fasteners and make sure that they are fully tightened.|  | X|  |  | X
Make sure that the product and its components are correctly operated.| X|  | | X|
Measure the power consumption and compare the result with the information on the name plate.|  | X|  | X|
If vibration dampers are installed, make sure that they operate correctly and examine them for damage and corrosion.|  | X|  |  | X
Make sure that the electrical protective equipment and the mechanical protective equipment operates correctly.|  | X|  |  | X
Make sure that you can read the name plates of the product.|  | X|  | X|
Examine all cable connections for damage. Make sure that the cable glands are tight against the cables.|  | X|  |  | X
If flexible connections are installed, examine them for damage.| X|  |  | X|

The unusual operation conditions are classified as follows: If a stable ambient temperature is higher than 30 °C or lower than -10° C, if the temperature changes are large or if very contaminated air is transported.

To clean the product

• Caution
  • Do not clean the product with a highpressure washer.
  • Do not clean the product with steel brushes or sharp objects.
  • Do not bend the fan impeller blades.
  • Be careful not to move the balance weights on the fan impeller.
• Remove dirt from the fan and the duct.
• If access to the fan impeller is possible, clean the fan impeller with a moist cloth or soft brush.

Spare parts

• When you send an order for spare parts, include the serial number of the product. The serial number is found on the name plate.
• For information about spare parts, send an e-mail to support@systemair.com.
• For more information about spare parts, contact Systemair support.
• Always use spare parts from Systemair.

Troubleshooting

Note:
If you cannot find a solution to your problem in this section, speak to Systemair technical support.

8.2 To clean the product.
The fan impeller has damages or deformations because the transported air contains aggressive media.| Speak to Systemair technical support.
The fan impeller does not turn in the correct direction.| Make sure that the electrical connection is correctly done.
 |
 | The fan impeller has deformations because of too high temperatures.| • Replace the fan impeller.

•    Make sure that the temperature of the transported air is not higher than the value on the name plate.

There are unusually strong vibrations in the product or the duct system.| Make sure that the product is correctly installed. Do a check of the duct system.
The product is operated in a resonant frequency range.| Increase or decrease the fan speed until the product operates smoothly.

Refer to 6 Commissioning.

The air output is not sufficient.| The fan impeller does not turn in the correct direction.| Make sure that the electrical connection is correctly done.
The electrical connection is not correctly done.| Make sure that the electrical connection agrees with the wiring diagrams.
The air pressure is too low because of incorrect installation.| Do the necessary changes in the duct system and installed components to increase the air pressure. Refer to 6 Commissioning.
The airflow shutters are closed or not fully open.| Adjust the airflow shutters.
There is blockage in the air inlet or the duct system.| Remove the blockage.
The product is not applicable for the installation location.| Make sure that the product is applicable for the installation location.
There is unusual noise when the product starts or operates.| There is strain in the connections of the duct system.| Loosen the connections, align the parts of the duct system correctly and tighten the connections.
Thermal contacts, PTC or resistors are released.| The fan impeller does not turn in the correct direction.| Make sure that the electrical connection is correctly done.
The motor is overheated.| •    Do a check of the motor cooling impeller.

•    If it is possible, measure the resistance to do a check of the motor winding.

The capacitor is not connected or not correctly connected.| Connect the capacitor correctly. Refer to the included motor wiring diagram.
There is blockage in the motor.| Speak to Systemair technical support.
The fan speed does not get the nominal value.| Defective motor winding.| If it is possible, measure the resistance to do a check of the motor winding.
---|---|---
The speed control is not correctly set.| Set the speed control correctly.
The fan impeller cannot turn freely because of mechanical blockage.| Remove the blockage.
The motor does not rotate.| A component in the power supply is defective.| Do a check of the power supply. Replace defective components and connect the power supply again.
The electrical connection is not correctly done.| Make sure that the electrical connection agrees with the wiring diagrams.
The motor protection is released because the motor is overheated.| Let the motor become cool. Reset the motor protection. Find the cause of the overheated motor.
The electronic components or the motor is overheated.| The motor is overloaded or the ambient temperature is too high.| Let the motor become cool. Reset the motor protection. Find the cause of the overheated motor.
The motor is overloaded.| Make sure that the product is applicable for the installation location.
The ambient temperature is too high.| Make sure that the product is applicable for the installation location.
The cooling of the product is not sufficient.| Make sure that the space around the motor is sufficient to keep the temperature down.

Disposal

The product follows the WEEE directive. This symbol on the product or the packaging of the product shows that this product is not domestic waste. The product must be recycled at an approved disposal location for electrical and electronic equipment.

To disassemble and discard the parts of the product

1. Disconnect and disassemble the product in the opposite sequence of electrical connection and installation.
2. Recycle the product parts and the packaging at an applicable disposal location.
3. Obey the local and national requirements for disposal.

Warranty

For warranty claims, send a written maintenance plan and the commissioning report to Systemair. The warranty is only applicable for these conditions:

• The product is correctly installed and operated.
• Motor protection is used.
• The instructions in the data sheets are obeyed.
• Maintenance instructions are obeyed.
• A product that is not operated continuously is operated for a minimum of 1 hour each month.

Technical data

Technical data overview

www.systemair.com.
Corrosion class
IP class
Voltage, current, frequency, enclosure class, weight| Refer to the name plate. Refer to 1.5 Name plate for more information.
Motor data| Refer to the motor name plate or the technical documentation from the motor manufacturer.

Product dimensions

Product dimensions
Note:
If the unit of measure is not specified, the dimensions are given in millimetres.

after the product name means that the product is sold outside EU.

 | ØA| B| C| D| E| F| G| ØH| I| J
---|---|---|---|---|---|---|---|---|---|---
KD 315M1| 313| 180| 31| 80| 25| 90| 10| 10| 60| 45
KD 355S1| 353| 205| 31| 80| 25| 112.5| 10| 10| 60| 45

after the product name means that the product is sold outside EU.

 | A| B| C| D| E| ØF| G| H| I| ØJ| ØK| ØL
---|---|---|---|---|---|---|---|---|---|---|---|---
KD 450XL**1| 65| 107| 812| 18.5| 315| 12| 100| 686| 46| 450| 500| 660

Wiring diagrams

Wiring diagrams for KD

Wiring diagrams for speed controller for AC motors
Note:
The selection of electrical accessories must be done in line with the technical parameters of the product.

• A. Relay connection. There is always 230 V between ~ and N when the transformer knob is in one of the positions 1–5.
• B. Mains supply
• C. Earth
• D. Fan

• L: the connection with cutting function on the speed control.
• (L): the connection without cutting function.

1. External change-over contact
2. Left selector switch
3. Right selector switch

• A. Fan
• B. Earth
• C. Mains supply

• A. Relay connection. There is always 230 V between ~ and N when the transformer knob is in one of the positions 1–5.
• B. Mains supply
• C. Earth
• D. Fan
• E. Thermostat
• F. Motor protection. If the motor protection is not in use, Tk must be looped together

• A. Contact rating, maximum AC 250 V/2 A
• B. Digital In 1
• C. Analog In 1
• D. Mains supply, 1–phase 208…277 V, 50/60 Hz
• E. Motor with internal thermal contacts
• F. OFF/ON

Accessory overview

1. IGK: inlet louvre
2. IGC: inlet louvre
3. RSK: Back draft damper
4. FGR/FFR: Filter cassette
5. FK fast clamp
6. Fan
7. LDC: Silencer
8. CWK: Water cooling battery
9. VBC: Water heating battery
10. CB and CBM: Electrical duct heaters
11. SPI: Iris damper
12. Balance S supply air diffuser
    Note:
    For more information about accessories, refer to www.systemair.com or speak to Systemair technical support.

Declaration of Conformity

ABOUT COMPANY

• Systemair Sverige AB
• Industrivägen 3
• SE-739 30 Skinnskatteberg
• +46 222 440 00
• mailbox@systemair.com
• www.systemair.com

References

• Sustainable, energy-saving HVAC products and solutions ❄️☀️ · Systemair

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