31
SECTION 4 - SERVICING INSTRUCTIONS
GENERAL LOCATION OF CONTROLS
ATMOSPHERIC 206A-406A
LO NOx 207A-407A
AFT Thermostat
Circuit Board
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
Gas Valve
Transformer
Drain 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
AFT Thermostat
Circuit Board
Summary of Contents for 336A
Page 28: ...28 WIRING DIAGRAM MILLIVOLT MECHANICAL THERMOSTAT...
Page 29: ...29 WIRING DIAGRAM ATMOSPHERIC...
Page 30: ...30 WIRING DIAGRAM LO NOx...
Page 48: ...48 19 M 20 M 22 M 24 M 23 M 21 M 22 M ATMOSPHERIC HEATERS...
Page 49: ...49 16 M 17 M 19 M 21 M 20 M 18 M 19 M LO NOx HEATERS...
Page 50: ...50...
Page 52: ...52 ATMOSPHERIC HEATERS...
Page 53: ...53 ATMOSPHERIC HEATERS...
Page 54: ...54 LO NOx HEATERS...
Page 55: ...55 LO NOx HEATERS...