Precautions ........................................................................................ 4
INTRODuCTION .................................................................................... 6
Qualifications ..................................................................................... 6
Basic Operation ................................................................................. 7
Top View ............................................................................................ 8
Side Views ......................................................................................... 9
Recovery Capacities ........................................................................ 10
Service Clearance ....................................................................................11
Insulation blankets .......................................................................... 12
Supply Gas Line .............................................................................. 13
Power Supply .................................................................................. 13
mixing valves ................................................................................... 14
Thermal Expansion .......................................................................... 14
Condensate Drain ............................................................................ 16
Air Requirements ............................................................................. 17
table of contents
Electrical Wiring ............................................................................... 39
Thermostat Control .......................................................................... 41
START uP ............................................................................................ 50
Initial Start up .................................................................................. 50
TROubLESHOOTING ......................................................................... 54
mAINTENANCE ................................................................................... 60
DIAGRAmS .......................................................................................... 63
LImITED WARRANTy .......................................................................... 74
2
The Desktop Screen .................................................................................42
Status Icons ..............................................................................................43
Temperatures menu ..................................................................................45
Heater Status menu ..................................................................................46
Display Settings ........................................................................................47
Heater Information ....................................................................................47
Current Fault .............................................................................................48
Fault History .............................................................................................48
Fault Occurrence ......................................................................................48
momentary Ignition ...................................................................................56
Fault Conditions ........................................................................................57
Alert Conditions ........................................................................................57
Diagnostic Checks ....................................................................................57