INTRODUCTION .......................................................................................2
Qualifications ........................................................................................2
Service Warning ...................................................................................2
Service Reminder .................................................................................2
Tools Recommended ............................................................................2
Instruction Manual ................................................................................3
Thermal Expansion ...............................................................................3
Air Requirements ..................................................................................3
Contaminated Air ..................................................................................3
1. Low Gas Pressure ............................................................................7
High Altitude .................................................................................7
Gas Pressure Test ........................................................................9
Pressure Switches .......................................................................11
4. Ignition Failure ................................................................................17
6. Blocked Exhaust .............................................................................21
Gas Control Valve ........................................................................22
Flame Sensor ...............................................................................24
8. No Water .........................................................................................26
Powered Anodes ..........................................................................26
9. Anode Shorted ................................................................................28
Temperature Probe ......................................................................29
TABLE OF CONTENTS
VENTING .................................................................................................33
Electrical Wiring ..................................................................................35
Power Supply Test ..............................................................................36
How It Works ......................................................................................38
Combustion Blower ............................................................................38
Modulation ..........................................................................................38
BURNER ASSEMBLY .............................................................................42
INSTRUCTIONS ......................................................................................43
SPARK IGNITER .....................................................................................44
CONTROL OVERVIEW ...........................................................................54
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