SECTION 4 - SERVICING INSTRUCTIONS
GENERAL LOCATION OF CONTROLS
ATMOSPHERIC
(Located in rear header)
AFT Thermostat
Circuit Board
Roll-Out
Switch
Gas Valve
LO NOx
Drain Plug
Pilot
Drain Plug
(Located in rear header)
Blower
Hose
Blower
AFT Thermostat
Circuit Board
Roll-Out
Switch
(Manual)
Gas Valve
Air
Switch
Pilot
31
Mounted On Top
Of Header
HL1 - High Limit
HL2 - High Limit
Pressure Switch
Temp Sensor/Well
Unitherm Governor
Drain Plug
Transformer
Mounted On Top
Of Header
HL1 - High Limit
HL2 - High Limit
Pressure Switch
Temp Sensor/Well
Draw Plug
Unitherm
Governor
Transformer