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CONTENTS
Installation Manual
SPECIFICATIONS .......................................................................................................................... 4
INTRODUCTION .......................................................................................................................... 5
SAFETY GUIDELINES .................................................................................................................... 6
INSTALLATION ............................................................................................................................. 7
General.....................................................................................................................................7
Clearances................................................................................................................................9
Included accessories................................................................................................................9
Optional items..........................................................................................................................9
Warning for installations........................................................................................................11
High-altitude installations......................................................................................................12
Venting instructions...............................................................................................................13
Gas supply and gas pipe sizing...............................................................................................25
Water connections................................................................................................................27
Condensate drain..................................................................................................................28
Electrical connections............................................................................................................30
Temperature remote controller............................................................................................31
Easy-Link System....................................................................................................................33
Multi-Unit System..................................................................................................................37
APPLICATIONS............................................................................................................................38
INITIAL OPERATION...................................................................................................................40
Owner's Guide
OPERATING SAFETY .................................................................................................................. 42
NORMAL OPERATION ............................................................................................................... 44
Temperature controller and Remote controller.....................................................................44
General...................................................................................................................................44
Temperature settings.............................................................................................................45
Temperature table of controller.............................................................................................45
Additional features.................................................................................................................46
Temperature settings on the PCB (Without remote controller)............................................47
Flow.......................................................................................................................................48
Freeze protection system.......................................................................................................48
Maintenance and service.......................................................................................................49
Unit draining and filter cleaning............................................................................................49
TROUBLESHOOTING...................................................................................................................50
General...................................................................................................................................50
Error codes............................................................................................................................52
COMPONENTS DIAGRAM...........................................................................................................55
PARTS LIST.....................................................................................................................................59
OUTPUT TEMPERATURE CHART..................................................................................................62
LIMITED WARRANTY..................................................................................................................63
Contents