LG Multi V Water IV - Default Chapter; Table of Contents

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Product Data
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TABLE OF CONTENTS
Safety Precautions ................................................................................ 4
Unit Nomenclature ................................................................................. 8
General Data .......................................................................................... 9
ARWN Series Heat Pump Water Source Unit Specications .............. 9
ARWB Series Heat Recovery Water Source Unit Specications....... 15
Heat Recovery Unit Specications and Electrical Data ..................... 21
Electrical Data ...................................................................................... 22
ARWN Series Heat Pump Water Source Units ................................. 22
ARWB Series Heat Recovery Water Source Units ............................ 23
Water Source Unit Dimensions .......................................................... 24
Single Frame Heat Pump and Heat Recovery .................................. 24
Dual Frame Heat Pump and Heat Recovery ..................................... 25
Triple Frame Heat Pump and Heat Recovery .................................... 26
Heat Recovery Units ......................................................................... 27
Refrigerant Flow Diagrams ................................................................. 30
ARWN Heat Pump Systems ............................................................ 30;
Cooling Operation ........................................................................ 30
Heating Operation ....................................................................... 31
ARWB Heat Recovery Systems ....................................................... 32
Cooling Operation ........................................................................ 32
Heating Operation ....................................................................... 33
Simultaneous Operation Mode 1 (Cooling Based Operation)...... 34
Simultaneous Operation Mode 2 (Heating Based Operation) ..... 35
PRHR022A, PRHR032A, PRHR042A Heat Recovery Units ............. 36
Cut Sheets ............................................................................................ 37
Water Source Unit Y-branch Kits for Heat Pump Systems ................ 37
Indoor Unit Y-branch Kits for Heat Pump Systems ............................ 38
Water Source Unit Y-branch Kits for Heat Recovery Systems........... 39
Indoor Unit Y-branch Kits for Heat Recovery Systems ...................... 40
Header Kits ....................................................................................... 41
Installation ............................................................................................ 43
Placement Considerations ................................................................. 43
Transporting/Lifting the Water Source Unit ....................................... 44
Water Source Unit Minimum Space Requirements ........................... 45
General Mounting / Anchoring the Water Source Unit ....................... 47
Heat Recovery Box Minimum Space Requirements ......................... 48
Refrigerant piping Installation ............................................................ 49
Computer-assisted Refrigerant Pipe Design ..................................... 49
Pipe Sizing for ARWN Series Heat Pump Systems ........................... 59
Pipe Sizing for ARWB Series Heat Recovery Systems ..................... 62
Pipe Layout ........................................................................................ 65
Refrigerant Pipe Connections ............................................................ 68
Insulating the Refrigerant Piping ....................................................... 70
Pressure (Leak) Testing ..................................................................... 73
Water Circuit Installation .................................................................... 75
Water Circuit Design .......................................................................... 75
Field-Supplied Components for WSU Installation ............................. 77
Piping System Specications ............................................................ 78
ELECTRICAL System Installation ...................................................... 85
General Information ........................................................................... 85
Power Wiring ..................................................................................... 86
Communication Cable ....................................................................... 87
ARWN Series Heat Pump Systems (208-230V and 460V) ............... 88
ARWB Series Heat Recovery Systems (208-230V and 460V) .......... 89
IDU Communication Cable ............................................................... 90
Zone Control of Indoor Units ............................................................. 91
Communication Cable ....................................................................... 92
Option Settings for All Water Source Units ........................................ 93
Pre-commissioning ............................................................................. 95
Preparing the Electrical System / Indoor Unit Auto Addressing ......... 95
Group Control / Central Control ......................................................... 99
Indoor Unit Temperature Sensing Strategy/Air Balance .................. 102
Prepare the Refrigerant Piping System ........................................... 108
Prepare Pre-comm Documents / Initiate a Request ......................... 111
Maintenance ........................................................................................112
Maintaining the Heat Exchanger ......................................................112
General Maintenance Schedule .......................................................113
LG Monitoring View (LGMV) Diagnostic Software ..........................115
Error Code Tables ...............................................................................117
Installation Checklist ......................................................................... 125
Pre-commissioning Checklist .......................................................... 127
Refrigerant Charge Worksheet ......................................................... 131
WSU Factory Refrigerant Charge ..................................................... 132