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Section One____________________________________________________________ 3
Introduction and Description __________________________________________________3
Description _______________________________________________________________________3
Section Two ___________________________________________________________ 4
INSTALLATION INSTRUCTIONS ____________________________________________ 4
Pre-Installation Inspection____________________________________________________________4
Location and Mounting ______________________________________________________________4
Electrical Requirements (FIG.1) _______________________________________________________ 6
Fuel Requirements (FIG.2) ___________________________________________________________6
Exhaust and Combustion Air Requirements (FIG.3)________________________________________ 7
Heater Mounting Dimensions (FIG.6)___________________________________________________ 8
Fuel Connections___________________________________________________________________9
Electrical Connections______________________________________________________________10
Section Three _________________________________________________________ 12
OPERATION ______________________________________________________________12
Controls and Indicators _____________________________________________________________12
Theory of Operation _______________________________________________________________13
Starting _________________________________________________________________________14
Section Four __________________________________________________________ 15
TROUBLESHOOTING and DIAGNOSTICS ___________________________________ 15
Fault Codes ______________________________________________________________________15
Troubleshooting___________________________________________________________________ 16
Burner Head Maintenance___________________________________________________________ 16
Preseason Maintenance, Annual Service________________________________________________17
Section Five __________________________________________________________ 18
PARTS LIST ______________________________________________________________ 18
Installation Hardware ______________________________________________________________18
Case and Heat Exchanger ___________________________________________________________ 19
Fuel, Ignition, and Electronic Control System____________________________________________20
Blower and Motor Assembly_________________________________________________________21
Comfort Control and Remote Harness__________________________________________________22
Section Six ___________________________________________________________ 23
OPTIONS and ACCESSORIES_______________________________________________23
Remote Calibrated Thermostat Installation______________________________________________24
External Diagnostic Light Installation__________________________________________________ 25
Hunter Mfg. 1999