Table of Contents
Related Manuals for Cooper & Hunter AHU-KIT
Summary of Contents for Cooper & Hunter AHU-KIT
- Page 1 AHU-KIT Service manual AHU-KIT Models: CH-AK036NK CH-AK071NK CH-AK140NK CH-AK280NK CH-AK560NK Thank you for choosing Cooper&Hunter AHU-KIT, please read this service manual carefully before operation and retain it for future reference.
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Page 2: User Notice
(7) The outdoor unit and the air handling unit can both influence the overall performance of the unit, please be sure to select appropriate outdoor unit, air handling unit and AHU-KIT unit according to actually apply requirements. (8) This equipment is not designed for year-round cooling applications with low indoor humidity conditions, such as Electronic Data Processing rooms. -
Page 3: Table Of Contents
3.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or Indoor Unit)27 3.4 Connect Communication Wire of Wired Controller ..............28 3.5 Illuminate for Connection of Wired Controller and Indoor Units (AHU-KIT) Network .... 28 Chapter Four: Debugging Operation ..................... 30 1. -
Page 4: Chapter One: Product Introduction
1. Product Specification 1.1 Product Profile AHU-KIT is an air conditioning product developed by C ooper&Hunter , which is used for connecting “outdoor unit of VRF” and “combine unit”, making the “outdoor unit of VRF” as the cold source and heat source. -
Page 5: Basic Principle
AHU-KIT Service Manual 2. Basic Principle 2.1 Sketch Map of System Connection 3. Basic Parameters CHV-AK036NK Model CHV-AK071NK CHV-AK140NK CHV-AK280NK CHV-AK560NK V/Ph 220~240/1/50 ＆ 208~230/1/60 Power Defaulted Cooling capacity of Heating 31.5 62.5 ex-factory Cooling 2.8/3.6 4.5/5.6/7.1 9/11.2/14 22.4/28 45/50.4/56... - Page 6 CHV-5S***NMX series. 80%~100% of capacity of outdoor unit. Note: When connecting AHU-KIT with the indoor unit of VRF unit, it must comply with the capacity requirement. Otherwise, it may affect the operation, or even damage the unit. This combination method is not suitable for C H V- AK 560 NK .
- Page 7 AHU-KIT Service Manual Cooling capacity AHU-KIT model Recommend model of outdoor unit （adjust by capacity code） CHV-5S120NK、CHV-5S140NK 11.2 CHV-AK140NK CHV-5S140NK、CHV-5S160NK 22.4 CHV-5S224NMX CHV-AK280NK CHV-5S280NMX、CHV-5S335NMX CHV-5S450NMX CHV-AK560NK 50.4 CHV-5S504NMX CHV-5S560NMX Sketch map for the connection of C H V-A K 140N K and C H V-A K 280N K...
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Page 8: Chapter Two: Control Part
AHU-KIT Service Manual Chapter Two: Control Part 1.DISPLAY Fig. 1.1 Appearance of wired controller 1.1 LCD OF WIRED CONTROLLER Fig. 1.2 LCD graphics of wired controller... -
Page 9: Lcd Display Instruction
AHU-KIT Service Manual 1.2 LCD DISPLAY INSTRUCTION Table 1.1 LCD display instruction Symbols Instructions Up and down swing function Left and right swing function It's valid under Save mode and displays during setting process. Temperature lower limit for Cooling: Limit the minimum temperature value under Cooling or Dry mode. - Page 10 AHU-KIT Service Manual Symbols Instructions Allow auxiliary electric heating On icon Light On/Off function X-fan function Health function, Indoor unit optional function Reserved function Out function Outdoor unit defrosting status Gate-control function Shielding status Child Lock status One wired controller controls multiple indoor units...
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Page 11: Buttons
AHU-KIT Service Manual 2. BUTTONS 2.1 BUTTON GRAPHICS Fig. 2.1 Button graphics 2.2 FUNCTION INSTRUCTION OF BUTTONS Table 2.1 Function instruction of buttons Buttons Instructions ENTER/CANCEL Select and cancel function (1) Set operating temperature of indoor unit (2) Set Timer... - Page 12 Corresponding parameter name range and Remark code default Under 00 status, controlled 00：indoor Indoor unit setting when AHU-KIT with common multi VRF unit stops indoor unit is heated to indoor unit, then indoor unit Special (default) temperature point， during stops;...
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Page 13: Chapter Three: Installation Parts
AHU-KIT Service Manual Chapter Three: Installation Parts 1. Preparations for Installation 1.1 Before Installation Notes: Product graphics are only for reference. Please refer to actual products. Unspecified measure unit is mm. This equipment is designed for R410A system, and the designed working pressure is 4.2 MPa or 42 bar. -
Page 14: Standard Fittings
AHU-KIT Service Manual 1.2 Standard Fittings Please use the supplied standard fittings listed below as instructed. 1.3 Selecting the Air Handling Unit Please use the supplied standard fittings listed below as instructed. Name Appearance Quantity Magnetic ring Swell screw Self-tapping screw... -
Page 15: Selecting The Ahu-Kit Unit
The limitations of connection are determined by the outdoor unit. 1.4 Selecting the AHU-KIT Unit The corresponding AHU-KIT unit needs to be selected for your air handling unit. Select the AHU-KIT unit according to the above limitations. Capacity ranges of different AHU-KIT unit are as follows:... -
Page 16: Location For Installation
（4） Choose a flat and strong mounting surface. （5） Make sure there is enough free space in front and in the side of the AHU-KIT unit for future maintenance. （6） The installation site should be far away from heat source, inflammable gas and smoke. - Page 17 (2×AWG18~2×AWG16) twisted together). 60227-5:2007 (60227 IEC 52 3.If unit is installed in /60227 IEC 53) places with intense magnetic field or strong interference, it is necessary to use shielded wire. 1.6.2 Select Communication wire for AHU-KIT and Outdoor Unit Fig.3.2...
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Page 18: Wiring Requirements
AHU-KIT Service Manual Total Length L (m/feet) of Communication Cable Wire size Material Material Type Remarks between Indoor Unit and /AWG) Standard Indoor (Outdoor) Unit 1. If the wire diameter is enlarged to 2×1 mm (2×AWG16), the total communication line length... -
Page 19: Installation Instructions
AHU-KIT Service Manual 2. Installation Instructions 2.1 Unit Dimensions and Maintenance Space （ 1 ） Size of control box for C H V-A K0 36N K 、 C H V-A K0 71N K 、 C H V-A K 140N K 、... - Page 20 AHU-KIT Service Manual （2）Size of EXV box for C H V-A K0 36 NK and CH V- AK0 71 NK (Unit: mm): （3）Size of EXV box for C H V-A K 140N K and C H V-A K 280N K (Unit: mm):...
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Page 21: Piping Installation
AHU-KIT Service Manual （5）Maintenance space of EXV box (Unit: mm): 2.2 Piping Installation 2.2.1 Diagram of Piping Connection 1. Air handling unit 2. Connection pipe from expansion valve kit to air handling unit 3. Valve kit 4. Liquid pipe 5. Gas pipe... -
Page 22: Piping Connections
AHU-KIT Service Manual L is to be considered as a part of the total maximum piping length. See installation manual of the outdoor unit for piping installation. 2.2.2 Piping Connections Make sure to install gas and liquid pipe diameters in function of the air handling unit capacity class. -
Page 23: Cautions For Brazing
AHU-KIT Service Manual 2.2.4 Cautions for Brazing (1) Make sure there is nitrogen protection during welding. Brazing without carrying out nitrogen replacement or releasing nitrogen into the piping will create large quantities of oxidized film on the inside of the pipes, adversely affecting valves and compressors in the refrigerating system and preventing normal operation. -
Page 24: Welding Work
AHU-KIT Service Manual 2.3.2 Welding Work (1) Prepare the inlet/outlet field piping just in front of the connection (do not weld yet). Fig.4.3.2 A Inlet coming from the outdoor unit B Outlet to air handling unit C Wire clamp (2) Remove the wire clamp (C) by unscrewing 6xM4.2. -
Page 25: Installation Of The Control Box
AHU-KIT Service Manual 2.4 Installation of the Control Box 2.4.1 Mechanical Installation （1） Fix the control box with its hanger brackets to the mounting surface. Open the lid of the control box. For electrical wiring: refer to the following contents. -
Page 26: Installation Of The Thermistors
AHU-KIT Service Manual Connecting cables according to the following instructions, as figure shown above. L......Live N......Neutral ..... Protective earth (screw) H......High gear of fan M......Middle gear of fan L......Low gear of fan 1/2......Lines of fault signal from external feedback D1/D2......Communication wires... - Page 27 AHU-KIT Service Manual 1. Liquid RT4 2. Gas RT2 Installation of the thermistor cable （1） The length of thermistor wire is 10 m. Put the thermistor cable in an individual protective tube. Apply stress release in the temperature sensor wire to prevent the temperature sensor wire from getting loose due to stress.
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Page 28: Installation Of The Exv Cable
Notes: ①. For connection to outdoor unit and to AHU-KIT unit: Pull the wires inside through the screw nut and close the nut firmly in order to ensure a good pull relieve and water protection. -
Page 29: Wire Connection
AHU-KIT Service Manual 3. Wire Connection Notes: ②. Units must be earthed securely, or it may cause electric shock. ③. Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring could cause malfunction or even damage the unit. -
Page 30: Power Cord Connection
AHU-KIT Service Manual Fig.5.1.1 Fig.5.1.2 3.2 Power Cord Connection Notes! Power supply of each indoor unit must be from the same source. Fig.5.2 For units with single-phase power supply: （1） Detach the electric box lid. （2） Let the power cord pass through the wiring through-holes. -
Page 31: Connect Communication Wire Of Wired Controller
AHU-KIT Service Manual Fig.5.3.1 Fig.5.3.2 3.4 Connect Communication Wire of Wired Controller （1） Open electric box cover of indoor unit. （2） Let the communication wire go through the rubber ring. （3） Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board. - Page 32 AHU-KIT Service Manual...
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Page 33: Chapter Four: Debugging Operation
①. Before initiating operation, please read the operation manuals of outdoor unit, AHU-KIT unit and the air handling unit carefully. ②. Refer to the installation manuals of the outdoor unit, AHU-KIT unit and the remote controller about settings of unit. -
Page 34: Chapter Five: Maintenance Part
AHU-KIT Service Manual Chapter Five: Maintenance Part 1. Table of Error Codes for Indoor Unit Error Error Error Content Content Content Code Code Code Quantity Of Group Water Temperature Indoor Unit Error Control Indoor Units Sensor Error Setting Error Error From External... -
Page 35: Troubleshooting
AHU-KIT Service Manual 2. Troubleshooting If your air conditioner is not working well, please check the following table first before asking for service: Phenomenon Troubleshooting ① No power supply. ② Circuit breaker is tripped because of current leakage. The unit can’t start ③... -
Page 36: Routine Maintenance
AHU-KIT Service Manual 3. Routine Maintenance Warning! ①. Only a qualified service person is allowed to perform maintenance. ②. Before obtaining access to terminal devices, all power supply circuits must be interrupted. ③. Water or detergent may deteriorate the insulation of electronic components and result in burn-out of these components. - Page 37 封底...
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