2
TABLE OF CONTENTS
PAGE
PAGE
1.
Safety Precautions ............................................. 4
2.
Precaution for Using R32 Refrigerant .............. 6
3.
Specifications ................................................... 11
3.1
WH-MXC09J3E8 .......................................... 11
3.2
WH-MXC12J9E8 .......................................... 14
4.
Features ............................................................. 17
5.
Location of Controls and Components .......... 18
5.1
Indoor Unit ................................................... 18
6.
Dimensions ....................................................... 37
6.1
Mono Bloc Unit ............................................. 37
7.
Refrigeration and Water Cycle Diagram ........ 38
7.1
Standard System (Optional PCB not
connected) ................................................... 39
7.2
Advance System (Optional PCB connected) ...
.................................................................... 39
8.
Block Diagram .................................................. 40
8.1
WH-MXC09J3E8 .......................................... 40
8.2
WH-MXC12J9E8 .......................................... 41
9.
Wiring Connection Diagram ............................ 42
9.1
Water System .............................................. 42
9.2
Refrigerant System ...................................... 44
10.
Electronic Circuit Diagram .............................. 45
10.1
Water System .............................................. 45
10.2
Refrigerant System ...................................... 47
11.
Printed Circuit Board ....................................... 48
11.1
Water System .............................................. 48
11.2
Refrigerant System ...................................... 50
12.
Installation Instruction ..................................... 52
12.1
Mono Bloc Unit ............................................. 52
12.2
Variation of System ...................................... 65
12.3
How to Fix External Device .......................... 72
12.4
System Installation ....................................... 75
12.5
Service and Maintenance ............................ 87
13.
Operation and Control ..................................... 88
13.1
Basic Function ............................................. 88
13.2
Water Pump ...............................................100
13.3
Indoor Unit Safety ......................................104
13.4
Auto Restart Control ..................................104
13.5
Indication Panel .........................................104
13.6
Indoor Back-Up Heater Control .................105
13.7
Tank Heater Control ...................................106
13.8
Base Pan Heater Control (Optional) ..........108
13.9
Heater Turn ON/OFF priority Control .........109
13.10
Force Heater Mode ....................................109
13.11
Powerful Operation ....................................111
13.12
Quiet Operation ..........................................111
13.13
Sterilization Mode ......................................112
13.14
Outdoor Ambient Thermo OFF Control .....112
13.15
Alternative Outdoor Ambient Sensor Control ..
................................................................. 113
13.16
Force DHW mode ..................................... 113
13.17
SMART DHW mode .................................. 114
13.18
DHW Capacity Setting .............................. 114
13.19
Anti Freeze Control ................................... 115
13.20
Solar Operation (Optional) ........................ 116
13.21
Boiler Bivalent Control .............................. 117
13.22
External Room Thermostat Control (Optional)
................................................................. 119
13.23
Three Ways Valve Control ........................ 120
13.24
Two Ways Valve Control........................... 121
13.25
External OFF/ON Control ......................... 121
13.26
External Compressor Switch (Optional PCB) ..
................................................................. 122
13.27
Heat/Cool Switch (Optional PCB) ............. 123
13.28
SG Ready Control (Optional PCB) ........... 124
13.29
Demand Control (Optional PCB) .............. 126
13.30
Holiday Mode ............................................ 126
13.31
Dry Concrete ............................................. 127
13.32
Flow Sensor .............................................. 127
14.
Protection Control ......................................... 128
14.1
Protection Control for All Operations ........ 128
14.2
Protection Control for Heating Operation.........
................................................................. 130
14.3
Protection Control for Cooling Operation .........
................................................................. 132
15.
Servicing Mode .............................................. 133
15.1
Expansion Vessel
⑦
Pre Pressure Checking .
................................................................. 133
15.2
Maintenance ............................................. 133
15.3
Pump Down Procedures ........................... 134
15.4
How To Adjust Pump Speed ..................... 135
15.5
How To Unlock Cool Mode ....................... 136
15.6
EEPROM Factory Default Data Setup
Procedure ................................................. 137
15.7
Dry Concrete Setup .................................. 138
16.
Maintenance Guide........................................ 140
16.1
Maintenance Menu ................................... 142
17.
Troubleshooting Guide ................................. 144
17.1
Refrigeration Cycle System ...................... 144
17.2
Relationship between the Condition of the Air-
to-Water Heatpump Indoor and Outdoor Units
and Pressure and Electric Current ............ 145
17.3
Breakdown Self Diagnosis Function ......... 146
17.4
Error Codes Table ..................................... 148
17.5
Self-diagnosis Method .............................. 150
18.
Disassembly and Assembly Instructions ... 196
18.1
To Remove The Cabinet Front Plate ........ 196
18.2
To Remove The Cabinet Top Plate .......... 196
18.3
To Remove The Cabinet Rear Plate ......... 197
18.4
To Remove Pressure Gauge .................... 197
18.5
To Remove Water System Electronic
Controller Board ........................................ 198
18.6
To Remove Air Purge Valve ..................... 199