JOHNSON CONTROLS
6
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
TABLE OF CONTENTS (CONT'D)
SECTION 5 - COMMISSIONING ............................................................................................................................77
General Guidelines for Use ............................................................................................................................77
Before Operation ...................................................................................................................................77
Precautions for The Use Of Water .................................................................................................................78
Chilled/Hot Water Outlet Temperature Controller ...........................................................................................78
Liquid Level Gauges .......................................................................................................................................78
Start The Chiller-Heater..................................................................................................................................79
Stop The Chiller-Heater ..................................................................................................................................79
Interlocking Procedure ..................................................................................................................................79
SECTION 6 – OPERATION ....................................................................................................................................91
YHAU-CGN/H Control Center .......................................................................................................................91
Common Items ...............................................................................................................................................91
Change Numeric Values .................................................................................................................................92
Operating Status ............................................................................................................................................93
Failure .................................................................................................................................................109
Control Parameter ........................................................................................................................................ 114
Valve Operation ............................................................................................................................................ 115
Date And Time .............................................................................................................................................. 116
Operation Switch .......................................................................................................................................... 116
Select Language .......................................................................................................................................... 116
Single Loop Controller .................................................................................................................................. 117
Run Mode ............................................................................................................................................ 118
Ready Mode ........................................................................................................................................ 118
Alarm Mode ......................................................................................................................................... 119
Alarm Codes ........................................................................................................................................120
Air Damper Control ......................................................................................................................121
Hot Water Control Valve ...............................................................................................................122
AUTO/MANUAL Mode (RHW only) ..................................................................................................... 123
Operation Mode Changeover .......................................................................................................................124
Changeover to Cooling Mode ..............................................................................................................124
Changeover to Heating Mode .............................................................................................................124
Use Simultaneous Residential Hot Water Supply Mode (Option) ......................................................124
Changeover to Residential Hot Water Sole Supply Mode (Option) ....................................................125
SECTION 7 – MAINTENANCE ............................................................................................................................. 129
Exhaust Duct Inspection ...............................................................................................................................129
Valve Inspection ...........................................................................................................................................129
Solenoid Valves ............................................................................................................................................129
Pump Shut Off Valves ..................................................................................................................................129
Air Purge Valves and Drain Valves ...............................................................................................................129
Purge Valves ................................................................................................................................................129
Start The Chiller-Heater After It Has Been Stopped For a Long Period .......................................................130
Checks Before Operation Starts ..........................................................................................................130
Checks After Operation Starts ...................................................................................................................... 130
Purge Procedure ..........................................................................................................................................130
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