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DC Inverter Multi
VRF System User Manual
Owner's Manual
Air Conditioners
Thank you for choosing Air Conditioners, please read this owner's manual carefully before
operation and retain it for future reference.
C&H reserves the right to interpret this manual which will be subject to any change due
to product improvement without further notice.
Applicable Models:
CHV-5S120NK
CHV-5S140NK
CHV-5S160NK
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Table of Contents
Related Manuals for Cooper & Hunter CHV-5S120NK
Summary of Contents for Cooper & Hunter CHV-5S120NK
- Page 1 DC Inverter Multi VRF System User Manual Owner's Manual Air Conditioners Applicable Models: CHV-5S120NK CHV-5S140NK CHV-5S160NK Thank you for choosing Air Conditioners, please read this owner’s manual carefully before operation and retain it for future reference. C&H reserves the right to interpret this manual which will be subject to any change due...
- Page 2 Preface C&H DC Inverter Multi VRF System, with the most advanced technologies in the world, uses eco- friendly refrigerant R410A as its cooling medium. For correct installation and operation, please read this manual carefully. Before reading the manual, please note that: 1) Multi VRF system conforms to design standard: EN 14511-2011.
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Page 3: Table Of Contents
Contents 1 Safety Precautions ..................1 2 Product Introduction ................3 2.1 Names of Main Parts ................3 2.2 Combinations of Indoor and Outdoor Units ..........3 2.3 Operating Range ..................3 3 Preparation before Installation..............4 3.1 Standard Parts ..................4 3.2 Installation Site ..................4 3.3 Piping Work Requirements .............. -
Page 4: Safety Precautions
DC Inverter Multi VRF System User Manual 1 Safety Precautions Refers to things that are not allowed. Incorrect operation may cause personal injury or death. refers to things that must be followed. Incorrect operation may cause personal injury or death. Installation should be conducted by dealer or qualified personnel. - Page 5 DC Inverter Multi VRF System User Manual Open the door and window and Do not insert fingers or objects keep good ventilation in the room into air outlet/inlet grille. to avoid oxygen deficit when the gas/oil supplied heating equipment is used. Turn off the unit after it runs at Never start up or shut off the air least five minutes;...
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Page 6: Product Introduction
(2) The total capacity of indoor units should be within 50%~135% of that of the outdoor unit. Model Min sets of connectable IDUs Max sets of connectable ODUs CHV-5S120NK CHV-5S140NK CHV-5S160NK (3) Outdoor units of DC Inverter Multi VRF System can be connected to various indoor units. -
Page 7: Preparation Before Installation
DC Inverter Multi VRF System User Manual 3 Preparation before Installation Note: Graphics here are only for reference. Please refer to actual products. Unspecified dimensions are all in mm. 3.1 Standard Parts Please use the supplied standard parts as required. Parts for Outdoor Unit Number Name... -
Page 8: Piping Work Requirements
DC Inverter Multi VRF System User Manual If the ODU is totally surrounded by walls, please refer to the following figures for space dimension: Wall Wall ≥200mm ≥350mm ≥200mm ≥200mm ≥350mm ≥2000mm Shockproof ≥2000mm material Wall Wall Fig.2 3.3 Piping Work Requirements Refer to the table below for piping work requirements: R410A Refrigerant System... -
Page 9: Installation Instruction
4 Installation Instruction Note: Graphics here are only for reference. Please refer to actual products. Unspecified dimensions are all in mm. 4.1 Dimension of Outdoor Unit and Mounting Hole Unit Outline and Installation Dimension(mm) Fig.3 Mode CHV-5S120NK 1345 CHV-5S140NK CHV-5S160NK... -
Page 10: Connection Pipe
DC Inverter Multi VRF System User Manual 4.2 Connection Pipe 4.2.1 Schematic Diagram of Piping Connection Outdoor Gas pipe Liquid pipe Outdoor connection pipe Connection pipe between ODU and the first indoor branch Connection pipe between indoor branch and IDUs IDU 1 Branchs of IDUs Connection pipe of indoor branchs... - Page 11 Intdoor Each Y-type branch equals to 0.5m and each branch header equals to 1.0m. Fig.5 Allowable Length and Height Difference of Connection Pipe Piping parameters of CHV-5S120NK, CHV-5S140NK and CHV-5S160NK: Allowable value Fitting pipe Total length (actual length) of fitting pipe...
- Page 12 Dimension of outdoor connection pipe: Pipe dimension Basic module Connection method Gas pipe (mm) Liquid pipe (mm) Φ15.9 Φ9.52 CHV-5S120NK Φ15.9 Φ9.52 Flared joint CHV-5S140NK Φ19.05 Φ9.52 CHV-5S160NK 4.2.4 Selection of Indoor Branches Select indoor branches according to the total capacity of downstream indoor units.
- Page 13 DC Inverter Multi VRF System User Manual Pipe between indoor branches Outdoor Indoor Fig.8 Total capacity of downstream indoor units C (kW) Gas pipe(mm) Liquid pipe(mm) C ≤ 5.6 Φ12.7 Φ6.35 5.6 ＜ C ≤ 14.2 Φ15.9 Φ9.52 14.2 ＜ C ≤ 22.0 Φ19.05 Φ9.52 4.2.6 Dimension of Pipe between Indoor Branch and IDU...
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Page 14: Oil Loop
DC Inverter Multi VRF System User Manual 4.3 Oil Loop 4.3.1 Objective of setting oil loop When large drop height exists in the system, oil loop is required to be set on the vertical pipeline so as to guarantee effective oil return to compressor. 4.3.2 Priciple of setting oil loop When large drop height exists between indoor and outdoor units, oil loop is required to be set on the vertical gas pipe for every 10m from down to the top. - Page 15 DC Inverter Multi VRF System User Manual 4.4.2 Flaring Process 1) Use pipe cutter to cut the connection pipe in case it is unshaped. 2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs after cutting.
- Page 16 Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for indoor pipe connection. Below is the piping diagram of CHV-5S120NK, CHV-5S140NK and CHV-5S160NK. According to customer requirement or space limit, outlet pipe can be installed from the front, right or rear side.
- Page 17 DC Inverter Multi VRF System User Manual Cut in the middle Fig.18 4.4.7 Thermal Insulation for Pipeline 1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection. 2) At the branch inlet, leave at least 500mm straight pipe section. 3) Thermal insulation for pipeline.
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Page 18: Disassembly Of Compressor Feet
3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the outdoor valve, as shown below. Manometer Manometer HI knob LO knob Liquid valve Vacuum pump Connection hose Gas valve Fig.21 4.6.2 Refrigerant Adding 1) Refrigerant quantity of outdoor unit before delivery: Mode CHV-160WL/A -T CHV-5S120NK CHV-5S140NK Refrigerant Qty (kg) - Page 19 DC Inverter Multi VRF System User Manual Notes: ① The refrigerant amount charged before delivery doesn’t include the amount that needs to be added to indoor units and the connection pipeline. ② Length of connection pipe is decided on site. Therefore the amount of additional refrigerant shall be decided on site according to the dimension and length of field-installed liquid pipe.
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Page 20: Electric Wiring
Number of power cord * Model Power supply capacity Min sectional area (mm Min sectional area (mm 220-240V ～ 50H 1×4.0 2×4.0 CHV-5S120NK 208-230V ～ 60H 220-240V ～ 50H 1×4.0 2×4.0 CHV-5S140NK 208-230V ～ 60H 220-240V ～ 50H 1×6.0 2×6.0 CHV-5S160NK 208-230V ～... -
Page 21: Check Items After Installation And Test Operation
DC Inverter Multi VRF System User Manual ② Specification of power cord is based on the working condition where ambient temperature is 40 ℃ and multi-core copper cable (working temperature is 90 ℃ , e.g. power cable with YJV cross- linked copper, insulated PE and PVC sheath) is lying on the surface of slot. - Page 22 DC Inverter Multi VRF System User Manual 7) After refrigerant is added, make sure valves of outdoor unit are completely open. 8) For the convenience of troubleshooting during debugging, unit shall be connected to a PC with applicable debugging software. Make sure unit’s real-time data can be checked through this computer.
- Page 23 DC Inverter Multi VRF System User Manual System detects error on indoor components. XXXX means the project code of IDU with error. 3s later, related error code will be XXXX/ showed. For instance, if no.1 IDU has d6 and d7 errors, then the 07_Detect Error LED3 digital tube will show circularly 00,01,d5,d6,07,92,d6,d7...
- Page 24 DC Inverter Multi VRF System User Manual 5.2.3 Appendix: Reference of normal operation parameters Debug item Parameter name Unit Reference Outdoor temperature — ℃ ● When compressor starts, discharge temp in cool mode is within 70~105℃ and at least 10℃ higher than the high Compressor discharge pressure saturation temp;...
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Page 25: Common Malfunctions And Troubleshooting
DC Inverter Multi VRF System User Manual 6 Common Malfunctions and Troubleshooting Warning: ① If there is abnormal condition (e.g. unpleasant smell), turn unit off and disconnect power immediately. Then contact C&H authorized service center. If unit continues operation despite the abnormal condition, it may get damaged and lead to electric shock or fire hazard. -
Page 26: Error Indication
DC Inverter Multi VRF System User Manual 7 Error Indication Inquiry method of error indication: combine division symbol and content symbol to check the corresponding error. For example: division symbol L and content symbol 4 together means over-current protection. Content symbol Division symbol Freeze Malfunction of... - Page 27 DC Inverter Multi VRF System User Manual Content symbol Division symbol 1-to-more: 1-to-more: Alarm due to Power supply is Mode shock No main IDU number of IDU IDU series is bad air quality insufficient is inconsistent inconsistent (Fresh air unit) Malfunction PCB of wired of exit-tube...
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Page 28: Function Setting Of Outdoor Unit
DC Inverter Multi VRF System User Manual Setting of Charging of Wrong button- main IDU is refrigerant is dial successful invalid Debugging Malfunction of Malfunction of Malfunction of Malfunction of Rated capacity lack of main multiple main multiple main multiple main is too low control unit control units... -
Page 29: Cool & Heat Function
DC Inverter Multi VRF System User Manual Press SW1 button (▲) and SW2 button (▼) to select the following silent modes. LED1 LED2 LED3 Function code Silent mode Display Current status Display 00~12 Blink Blink When applicable mode is selected, press SW7 to confirm. Main board of outdoor unit will display as below: LED1 LED2... -
Page 30: Forced Defrosting
DC Inverter Multi VRF System User Manual Then press SW6 on the master unit to return to the previous step. If then no motion is taken to the master unit for 5min, unit will exit and resume displaying the current status. (If this button is pressed when function is being set, system will return to the previous step. -
Page 31: Maintenance And Care
DC Inverter Multi VRF System User Manual 9 Maintenance and Care Regular check, maintenance and care can extend unit’s service life. Please have specialized person in charge of the management of air conditioners. 9.1 Outdoor Heat Exchanger Outdoor heat exchanger shall be cleaned regularly, which is at least once every two months. You can use a dust catcher with nylon brush to clean away the dust on the heat exchanger.
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