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LSQWRF35VM/NhA-M
Gree LSQWRF35VM/NhA-M User Manual
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Service Manual
Change for life
A
series modular air-cooled chiller (heat pump)
T1/ R410A
/50Hz
T1/ R32 /50Hz
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 Product Information
7
Introduction
7
Lineup
7
Nomenclature
7
Product Features
8
Nominal Operating Conditions
8
Operation Range
9
Performance Correction Curves
9
Working Principle
10
Technical Parameters
14
Electrical Parameters
14
Performance Parameters
15
Scope of Supply
17
2 Unit Control
19
Schematic Diagram
19
Operation Flowchart
21
Cooling
21
Heating
22
Key Control Logics
23
Cooling Control
23
Heating Control
23
Control to the Compressor
24
Control to the Fan
24
Control to the 4-Way Valve
24
Control to the Water Pump
24
Control to the Electric Expansion Valve
24
Protection
24
Introduction to Controller
25
Smart Management System
25
Long-Distance Monitoring/Bms Interface
25
Network of the Long-Distance Monitoring System
25
Hardware
26
Model Selection Instructions
27
3 Unit Installation
30
Installation Flowchart
30
Preparations before Installation
31
Precautions for Installation
31
Importance of Installation
32
Installation Instructions
33
Outline Dimensions
33
Precautions for Installation
37
Installation Environment
37
Installation and Service Space
37
Installation Foundation
38
Handling and Lifting
38
Placement of the Main Unit
39
Piping and Insulation
39
Installation of the Water System
39
Requirements on Piping
41
Installation of the Expansion Tank
43
Installation of Condensate Pipes
44
Electrical Connection
46
Safety Precautions
46
External Connection
46
Specification of Power Supply
51
Wiring of the Electric Control Cabinet
51
Field Wiring
53
Networking and Wiring between Units
55
Electric Wiring Digram
58
Jumpers
65
4 Test Operation, Troubleshooting and Maintenance
67
Commissioning
67
Flowchart of Commissioning
67
Safety Precautions for Commissioning
67
Preparation before Commissioning
67
Check before Commissioning
67
Check for Initial Run
68
Troubleshooting
70
Diagnostics
70
Flow Chart of Troubleshooting
72
Power Distribution
78
Power Distribution Logic
78
Introduction to Main Electric Elements
78
Main Board
79
Replacement of Main Parts
81
Brief Introduction
81
Replacement Instructions
82
Routine Maintenance
103
Repairs to Refrigerant Leakage
103
Air Removal
104
Exploded Views and Part Lists
105
Maintenance
117
Requirements for Maintenance
117
Freeze Protection in Winter
119
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Gree LSQWRF35VM/NhA-M Specifications
General
Cooling Capacity
35 kW
Refrigerant
R410A
Power Supply
380-415V/3Ph/50Hz
Noise Level
65 dB(A)
Weight
450 kg
Type
Air-cooled Scroll Chiller
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