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CALL
OUT DESCRIPTION 185B 265B 335B 405B
B BURNER TRAY
1-B Burner Tray w/Burners (Sea Level)* 004386F 004387F 004388F 004389F
Burner Tray w/o Burners (Sea Level)* 004390F 004391F 004392F 004393F
Burner Tray w/Gas Valve Nat STG 004852F 004856F 004860F 004864F
Burner Tray w/Gas Valve Pro STG 004854F 004858F 004862F 004866F
Burner Tray w/Gas Valve Nat IID 004853F 004857F 004861F 004865F
Burner Tray w/Gas Valve Pro IID 004855F 004859F 004863F 004867F
2-B Burner Spacer/Hold Down Kit 004394F 004395F 004396F 004397F
3-B Burner 301210/12 301210/17 301210/21 301210/26
4-B Burner Orifice Nat. #50 (Sea Level)* 350079F/12 350079F/17 350079F/21 350079F/26
Burner Orifice Pro. #57 (Sea Level)* 350083F/12 350083F/17 350083F/21 350083F/26
C CONTROLS
1-C High Limit 135∞ 600892B 600892B 600892B 600892B
2-C High Limit 140∞ 600893B 600893B 600893B 600893B
3-C Thermostat Control MV (Mechanical) 003346F 003346F 003346F 003346F
4-C Thermostat Control MV (Solid State) 005391F 005391F 005391F 005391F
5-C PC Board 005089B 005089B 005089B 005089B
6-C Potentiometer 005087B 005087B 005087B 005087B
7-C Temperature Sensor 005088B 005088B 005088B 005088B
8-C Thermostat Control IID (Solid State) 005390F 005390F 005390F 005390F
9-C PC Board 005086B 005086B 005086B 005086B
6-C Potentiometer 005087B 005087B 005087B 005087B
7-C Temperature Sensor 005088B 005088B 005088B 005088B
G GAS VALVE
1-G Combination Valve - Nat. MV 003898F 003898F 003898F 003898F
Combination Valve - Pro. MV 003899F 003899F 003899F 003899F
Combination Valve - Nat. IID 003900F 003900F 003900F 003900F
Combination Valve - Pro. IID 004306F 004306F 004306F 004306F
H HEAT EXCHANGER
1-H Heat Exchange Assy. CI (Complete) 003752F 003753F 003754F 003755F
Heat Exchange Assy. BR (Complete) 004052F 003756F 003757F 003758F
2-H Inlet/Outlet Header CI 003759F 003759F 003759F 003759F
Inlet/Outlet Header BR 003760F 003760F 003760F 003760F
3-H Return Header CI 002450F 002450F 002450F 002450F
Return Header BR 002451F 002451F 002451F 002451F
4-H Tube Bundle 004671F 004672F 004673F 004674F
Heat Exchange Tube 002456F 002457F 002458F 002459F
6-H Baffle Kit 001299F 001300F 001301F 001302F
7-H Bolt Kit 001303F 001303F 001303F 001303F
8-H Header Gasket 800014B 800014B 800014B 800014B
9-H Unitherm Governor 062234B 062234B 062234B 062234B
10-H U.G. Retainer Spring 850254 850254 850254 850254
11-H Bypass Valve 062235B 062235B 062235B 062235B
12-H Bypass Spring 850252 850253 850253 850253
13-H Drain Valve 500719 500719 500719 500719
14-H Sensor Well 003765F 003765F 003765F 003765F
15-H Well Retaining Clip 300203 300203 300203 300203
16-H Inlet & Outlet Flange 003766F 003766F 003766F 003766F
17-H Flange Gasket 1 1/2" Connections 062236B 062236B 062236B 062236B
Flange Gasket 2" Connections 800080B 800080B 800080B 800080B
J J BOX/CONTROL BOX
1-J Control Box IID w/o Thermostat Nat 003767F 003767F 003767F 003767F
Control Box IID w/o Thermostat Pro 004307F 004307F 004307F 004307F
2-J Ignition Control IID Nat. 004817B 004817B 004817B 004817B
Ignition Control IID Pro. 004818B 004818B 004818B 004818B
3-J Transformer 120/240/24V 006736F 006736F 006736F 006736F
4-J Toggle Switch (MV Units) 650761 650761 650761 650761
5-J Toggle Switch (IID & Dual MV Units) 650760 650760 650760 650760
*FOR ALTITUDES ABOVE 2,000 FEET LEVEL, CONSULT THE FACTORY