Gree LSQWF35VM/NaA-M Installation, Start-Up And Maintenance Manual

Inverter modular air-cooled chiller (wider operation range)

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Installation, Startup and Maintenance Manual

Inverter modular air-cooled chiller (wider operation range)

Model:

LSQWF35VM/NaA-M

LSQWF65VM/NaA-M

LSQWF130VM/NaA-M

Thank you for choosing commercial air conditioners.Please

read this Owner' s Manual carefully before operation and

If you have lost the Owner's Manual, please contact the

local agent or visit www.gree.com or send an email to

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Summary of Contents for Gree LSQWF35VM/NaA-M

Page 1 Model: LSQWF35VM/NaA-M LSQWF65VM/NaA-M LSQWF130VM/NaA-M Thank you for choosing commercial air conditioners.Please read this Owner’ s Manual carefully before operation and If you have lost the Owner's Manual, please contact the local agent or visit www.gree.com or send an email to...
Page 2 To users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected operating effect, we hereby instruct as below: (1) This equipment should be installed, operated or maintained by the qualified servicemen who have had specific training.
Page 3: Table Of Contents
Contents 1 General introduction ..................6 1.1 Product features ..................6 1.2 Principle diagrams ..................7 1.3 Number of major components ..............8 2 Operation range .....................8 3 Outline dimensions ..................9 4 Installation instructions .................10 4.1 Pre-check ....................10 4.2 Acceptance check .................10 4.3 Handling and lifting ................11 4.4 Installation foundation and service space ..........12 4.5 Vibration reduction ................15 4.6 Installation of the water system ............16...
Page 4 7.11 Freeze protection ................35 7.12 Routine maintenance ................36 7.13 Precautions ..................36 8 Troubleshooting and after-sales service ............37 8.1 Troubleshooting measures ..............37 8.2 After-sales service ................38 Appendix A: Inspection records prior to commissioning ........39 Appendix B: Trial run and commissioning records ..........40 Appendix C: Antifreeze and physical properties ..........41...
Page 5: Safety Notices
Inverter modular air-cooled chiller (wider operation range) Safety notices WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTE: If not abide strictly, it may cause slight or medium damage to the unit or the people. This sign indicates that the operation must be prohibited.
Page 6 Inverter modular air-cooled chiller (wider operation range) NOTE • Do not install the unit where there is high-intensity magnetic field or it is highly basic or acid or the voltage is quietly unstable. • Do not install the unit where there would be leaked inflammable gas, as it would lead to fire hazards. •...
Page 7 • Do not do troubleshooting personally, as incorrect troubleshooting would lead to electrocution or fire hazards. Instead, please contact GREE after-sales service center. • When the unit is charged with refrigerant, do not solder or cut any pipeline, fined heat exchanger, shell- and-tube heat exchanger or other containers.
Page 8 Inverter modular air-cooled chiller (wider operation range) DANGER • Do not use the fuse out of the normal range or replace it with the electric wire, otherwise it would damage the unit or lead to fire hazards. • Do not start or stop the unit directly by the power switch, as it would be likely to cause electrocution or fire hazards.
Page 9 Inverter modular air-cooled chiller (wider operation range) Correct disposure This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources.
Page 10: General Introduction
The all-inverter modular air-cooled chillers can be constructed of multiple single units with the same or different structure or capability. For the LSQWF35VM/NaA-M, it has one independent cooling system for every module; for the LSQWF65VM/NaA-M and LSQWF130VM/NaA-M, two independent systems for every module.
Page 11: Principle Diagrams
Inverter modular air-cooled chiller (wider operation range) 1.2 Principle diagrams (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M COOL Finned heat exchanger 4-way valve Electric expansion valve Compressor Shell-and-tube heat exchanger Vapor-liquid separator (2) LSQWF130VM/NaA-M COOL Finned heat exchanger 4-way valve Electric expansion valve for heating...
Page 12: Number Of Major Components
Inverter modular air-cooled chiller (wider operation range) 1.3 Number of major components Number Name LSQWF35VM/NaA-M LSQWF65VM/NaA-M LSQWF130VM/NaA-M Compressor Finned heat exchanger Shell-and-tube heat exchanger Accumulator Electric expansion valve Four-way valve 2 Operation range (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M Water side Air side...
Page 13: Outline Dimensions
Inverter modular air-cooled chiller (wider operation range) 3 Outline dimensions (1) LSQWF35VM/NaA-M (unit: mm) Installation hole 1200 Water oulet: G1-1/2 male thread Drain valve Water inlet: G1-1/2 male thread 126 121 1340 (2) LSQWF65VM/NaA-M (unit:mm) Installation hole 2060 Water oulet:...
Page 14: Installation Instructions
Inverter modular air-cooled chiller (wider operation range) (3) LSQWF130VM/NaA-M (unit:mm) 1650 Water in 2040 (Anchor bolt 6-M12) 1930 (Anchor bolt 6-M12) 2305 1980 Note: the outline dimensions exclude the height of transport shock pads (70mm). 4 Installation instructions 4.1 Pre-check Installation should be performed by the skilled technician to guarantee the normal operation and prevent malfunctions and please read this manual carefully prior to installation.
Page 15: Handling And Lifting
The unit should be moved softly and severe collision and forced drag are not allowed. Please do lifting as shown in the figure below for units with similar structure. (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M Dursing hoisting, the length of the spreader should be longer than that of the unit.
Page 16: Installation Foundation And Service Space
Alternatively, each single unit can be placed side by side on the parallel channel steel with enough strength which then shall be secured with anchor bolts. Distance between each single unit shall be keep 0.5 meter as a minimal for LSQWF35VM/NaA-M and LSQWF65VM/NaA-M, 1 meter as a minimal for LSQWF130VM/NaA-M.
Page 17 Inverter modular air-cooled chiller (wider operation range) 4.4.1 Installation space for the single unit (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M (Unit: mm) Outlet Outlet >1000 >1000 Electric box The inlet and outlet pipes both are at this side. Note: The unit should be installed where at least three sides of the unit are not blocked.
Page 18 Inverter modular air-cooled chiller (wider operation range) Inlet Inlet Inlet Inlet Inlet >1000 >500 >1000 Electric box Inlet Inlet The inlet and outlet pipes both are at this side. Inlet Inlet >1000 >500 >1000 Electric box The inlet and outlet pipes both are at this side.
Page 19: Vibration Reduction
Inverter modular air-cooled chiller (wider operation range) Inlet Inlet Inlet Inlet Inlet > 2000 >2000 >1000 Inlet Inlet Inlet Inlet Inlet Inlet >2000 >1000 >2000 Note: Diagrams above are just for reference and not to scale. 4.5 Vibration reduction The unit shall be securely attached to the foundation through the mounting hole by following the steps below.
Page 20: Installation Of The Water System
Inverter modular air-cooled chiller (wider operation range) 4.6 Installation of the water system ■ Considerations stated below shall be taken carfelly for the water system. (1) Each water inlet and outlet should be labeled properly to avoid misconnection. (2) A flexible connector should be used at the chilled water outlet to reduce vibration transmission. (3) A manometer, a thermometer and a gate valve shall be installed at the chilled water inlet/outlet.
Page 21 Inverter modular air-cooled chiller (wider operation range) 4.6.1 Installation diagram (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M...
Page 22 Inverter modular air-cooled chiller (wider operation range) (2) LSQWF130VM/NaA-M...
Page 23 Inverter modular air-cooled chiller (wider operation range) 4.6.2 Drainage (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M 1) Loosen screws around the panel and then take down it. 2) Remove anticlockwise the blind plug located at the bottom of the heat exchanger to let the chilled water flow out.
Page 24: Introduction To The Display Panel
See the Operation Instructions for the Display Panel of the inverter modular type chillers for more details. 6 Electric wiring 6.1 External wiring of the electric control cabinet ■ LSQWF35VM/NaA-M, LSQWF65VM/NaA-M Remote start/stop error indicating running indicating Note: the output control lines of the AC contactors for the running indicator, water pump 1,water pump...
Page 25 Inverter modular air-cooled chiller (wider operation range) Unit 2 Unit 3 Unit 16 Unit 1 When it is required to display errors of several units, the wiring terminals (3, 4) of each unit should be wired to the wiring terminals HL2 (C, D) of the error indicator.(If it is required to display the error of each unit independently, then the error indicator of each unit should be wired independently to the corresponding error output wiring terminals (3,4) of each unit.)
Page 26 Inverter modular air-cooled chiller (wider operation range) ■LSQWF130VM/NaA-M Control output neutral line Control output contactor (electric heater 2; 220V live line) Control output neutral line Control output contactor (electric heater 1; 220V live line) Remote start/stop Remote start/stop Control output neutral line Control output contactor (user water pump 2;...
Page 27: Specification Of Power Cord And Air Switch
(b) The specifications of the power cable listed in the table above are applied to the conduit-guarded multi-wire copper cable (like, JYV copper cable, consisting of PV insulated wires and a PVC cable jacket) used at 45°C (LSQWF35VM/NaA-M, LSQWF65VM/NaA-M) or 40°C (LSQWF130VM/NaA-M) and resistible to 90°C (GB/T 16895.15-2002). If the working condition changes, they should be modified according to the related national standard.
Page 28: Wiring Of The Electric Control Cabinet
Inverter modular air-cooled chiller (wider operation range) 6.3 Wiring of the electric control cabinet (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M...
Page 29 Inverter modular air-cooled chiller (wider operation range) (2) LSQWF130VM/NaA-M...
Page 30: Field Wiring
The cable shoulde be fixed with fasteners The cable should be fixed with wire ties at these two holes of the upright column The thru-hole after wiring should be sealed to prevent insects from entering LSQWF35VM/NaA-M...
Page 31 Inverter modular air-cooled chiller (wider operation range) The cable shoulde be fixed by these three fasteners The thru-hole after wiring should be sealed to prevent insects from entering LSQWF65VM/NaA-M (4) The unit shall be grounded reliably and never connect the ground wire with the gas fuel pipe, water pipe, lightening rod or telephone line.
Page 32: Networking And Wiring Between Units
Inverter modular air-cooled chiller (wider operation range) 6.5 Networking and wiring between units (1) LSQWF35VM/NaA-M, LSQWF65VM/NaA-M...
Page 33 Inverter modular air-cooled chiller (wider operation range) (2) LSQWF65VM/NaA-M, LSQWF130VM/NaA-M...
Page 34: Setup Of Dip Switches On The Motherboard
(d) There are two solutions for remote monitoring. • Install the remote monitoring software at the PC. • Based on GREE provided Modbus protocol, the user can do second development to this protocol. Note: those enclosed by the dotted lines indicate the remote monitoring equipment. When the quantity of the display panel exceeds 30 or length of the communication line exceeds 800m, extra photoelectric relay is required.
Page 35: Jumpers
4202021924 QXAS-H80zN345H 7 Commissioning and maintenance The unit shall be maintained periodically by the skilled servicemen from Gree or a designed person under our professional guide to guarantee the unit operates reliably in a long term. 7.1 Check before startup Please finish the following steps before staring the system.
Page 36 Inverter modular air-cooled chiller (wider operation range) Water quality requirement Cold/hot water Trend Items Circulating Makeup Corrosion Scale water water pH (25°C) 6.8-8.0 6.8-8.0 ○ ○ Electrical μs/cm <400 <300 ○ ○ conductivity (25°C) mg(Cl <50 <50 ○ Basic items mg (SO <50 <50...
Page 37: Trial Run
Inverter modular air-cooled chiller (wider operation range) (6) Repeat 4 and 5. (7) Clean or change the filters in the water system. (8) See if the difference between the entering and leaving water temperature is improved. ■ Precautions (1) Although the cleaning agent is innocuous,care also should be taken not to let it spill into eyes. (2) The serviceman with injuries on the hand is not allowed to take this task.
Page 38: Maintenance To The Main Parts
(8) Check if the system vibration and noise are acceptable. 7.8 Parts replacement Only parts supplied by Gree can be replaced instead of similar parts supplied by others. 7.9 Refrigerant charging Refrigerant charging should be done based on the discharge and suction pressure. An air tight test must be taken on the condition refrigerant leaks or some part is required to be replaced.
Page 39: Removal Of The Compressor
Inverter modular air-cooled chiller (wider operation range) (4) Refrigerant charge will be affected by the ambient temperature. When charged refrigerant is under the required amount, add in accordance with the other charging case stated below. ■ Adding Connect the refrigerant charging port at the lower pressure side to the refrigerant tank and install a manifold gage.
Page 40: Routine Maintenance
Inverter modular air-cooled chiller (wider operation range) 7.12 Routine maintenance Routine maintenance shall be performed periodically by the qualified technician so as to extend the service life of the unit and lower the possibility of occurrence of faults. Record weekly the running status of the unit to facilitate troubleshooting for the servicemen.
Page 41: Troubleshooting And After-Sales Service
Inverter modular air-cooled chiller (wider operation range) 8 Troubleshooting and after-sales service 8.1 Troubleshooting measures Symptoms Possible causes Recommended action 1. Revacuum the system and 1. Uncomplete vacuuming. recharge refrigerant. 2. Too high envivornment temperature. 2. Improve ventilation. 3. Condenser fins are dirty and there are Shutdown against high 3.
Page 42: After-Sales Service
Inverter modular air-cooled chiller (wider operation range) Symptoms Possible causes Recommended action 1. The buld plug and the main board 1. Check if the bulb plug was Temperature sensor plug were connected incorrectly. connected to the correct protection 2. The temperature bulb was damaged. main board plug.
Page 43: Appendix A: Inspection Records Prior To Commissioning
Inverter modular air-cooled chiller (wider operation range) Appendix A: Inspection records prior to commissioning...
Page 44: Appendix B: Trial Run And Commissioning Records
Inverter modular air-cooled chiller (wider operation range) Appendix B: Trial run and commissioning records...
Page 45: Appendix C: Antifreeze And Physical Properties
Inverter modular air-cooled chiller (wider operation range) Appendix C: Antifreeze and physical properties Ethylene glycol Freezing point Boiling point Mass concentration Volume concentration °C 100.7KPa 100.0 -1.4 100.6 10.0 -3.2 101.1 15.0 13.6 -5.4 102.2 20.0 18.1 -7.8 102.2 21.0 19.2 -8.4 102.2...
Page 46 Inverter modular air-cooled chiller (wider operation range) Ethylene glycol Freezing point Boiling point Mass concentration Volume concentration °C 100.7KPa 58.0 55.7 -45.6 108.9 59.0 56.8 -47.1 109.4 60.0 57.8 -48.3 110.0 65.0 62.8 112.8 70.0 68.3 116.7 75.0 73.6 120.0 80.0 78.9 -46.8...
Page 47 Inverter modular air-cooled chiller (wider operation range) Propylene glycol Freezing point Boiling point Mass concentration Volume concentration °C 100.7KPa 46.0 45.7 -27.9 104.4 47.0 46.8 -29.3 104.0 48.0 47.8 -30.6 105.0 49.0 48.9 -32.1 105.0 50.0 49.9 -33.5 105.6 51.0 50.9 -35.0 105.6...
Page 48 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com www.gree.com...

This manual is also suitable for:

Lsqwf65vm/naa-m Lsqwf130vm/naa-m