Operating instructions

31
SECTION 4 - SERVICING INSTRUCTIONS
GENERAL LOCATION OF CONTROLS
ATMOSPHERIC
LO NOx
Digital Thermostat
Circuit Board
Drain Plug
(Located in rear header)
Unitherm Governor
Mounted On Top
Of Header
HL1 - High Limit
H
L2 - High Limit
Pressure Switch
Temp Sensor/Well
Pilot
Roll-Out
Switch
Gas Valve
Transformer
Draw Plug
Drain Plug
(Located in rear header)
Unitherm
Governor
Mounted On Top
Of Header
HL1 - High Limit
HL2 - High Limit
Pressure Switch
Temp Sensor/Well
Pilot
Roll-Out
Switch
(Manual)
Gas Valve
Transformer
Draw Plug
Air
Switch
Blower
Hose
Blower
Digital Thermostat
Circuit Board