LG ARWN40GA0 User Manual download pdf (Page 60)

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60 Outside Unit

Cooling tower applied method

[Open type cooling tower + Second heat exchanger]

Heat exchanger is installed between the cooling

tower and outside unit system piping, and the

temperature difference between 1

side and 2

side is maintained constantly

[Closed type cooling tower]

Heat source water of the cooling tower is supplied

directly to the outside unit system.

Open type

cooling tower

Closed type

cooling tower

side

Heat exchange

CAUTION

When the open type cooling tower is used and the water supply is directly connected to the 2

heat exchanger, product

damage by alien particle cannot be repaired for free.

- Always use the 2

heat exchanger.

1 2 ... 55 56 57 58 59 60 61 62 63 64 65

CONDITIONER 1
TABLE OF CONTENTS 2
Safety Precautions 3
4 Outside Unit 4
Installation Manual 5 5
Installation Process 7
Outside units Information 8
Select the Best Location 9
Installation space 10
Water control 11
[Reference] 12
Lifting method 13
The location of 14
Preparation of Piping 15
R=0.4~0.8 16
Installation 17
HEAT INSULATION 17
Installation Manual 17 17
Ball Valve 18
(Gas Pipe) 18
(Liquid Pipe) 18
Installation of water pipe 19
Water pipe 20
Water pipe inlet 20
Water pipe outlet 20
Device protection unit 21
Installation of flow switch 22
Flow switch work 22
L70 (230) 23
H30 (98.4) 23
[Unit:m(ft)] 23
40 (131) 25
26 Outside Unit 26
Refrigerant piping system 26
(Unit : lbs) 26
Installation Manual 27 27
Distribution Method 28
Installation Manual 29 29
30 Outside Unit 30
Leakage 31
Nitrogen substitution method 32
Installation Manual 33 33
Branch pipe Fitting 34
Insulate the header using 35
36 Outside Unit 36
Penetrations 36
Y branch pipe 37
[unit:mm (inch)] 38
Liquide pipe 39
Gas pipe 39
Electrical Wiring 41
42 Outside Unit 42
Front Panel 42
Transmission and Power Lines 43
44 Outside Unit 44
Installation Manual 45 45
Pull Box(Installer option) 45
External wiring 46
Installation Manual 47 47
Installation Manual 49 49
50 Outside Unit 50
Group Number setting 51
Push Button 52
Test Run 53
Precaution before test run 54
Installation Manual 55 55
: Check mark) 56
Self-Diagnosis Function 57
58 Outside Unit 58
Installation Manual 59 59
Cooling tower applied method 60
Caution For Refrigerant Leak 61
62 Outside Unit 62
Water Solenoid Valve Control 63
VWFC PCB 64
Transformer 64
Terminal block 64

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LG ARWN40GA0 User Manual Page 60

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