| | Pilot Gas System | | |
| 1 | W2001800 | Pilot Assembly (Nat.), Hot Surface | | |
| W2001900 | Pilot Assembly (LP), Hot Surface | | |
| 2 | L0056500 | Burner with Pilot Bracket | | |
| 3 | L0052500 | Main Burner | | |
| 4 | | Main Gas Valves | | |
| V2001800 | Valve, Hot Surface, (Nat.) SV9501H 3415 | | |
| V2002300 | Valve, Hot Surface, (LP) SV9501H 3423 | | |
| 5 | | Gas Orifices | | |
| L0032200 | (0-2000 FT.) Nat., Orifices | | |
| L0050700 | (0-2000 FT.) Nat., Orifices | | |
| L0032600 | (5001-8000 FT.) Nat., Orifices | | |
| L0050300 | (8001-10,000 FT.) Nat., Orifices | | |
| L0032900 | (0-5000 FT.) LP, Orifices | | |
| L0032800 | (5001-8000 FT.) LP, Orifices | | |
| L0032700 | (8001-10,000 FT.) LP, Orifices | | |
| 6 | L0052603 | Gas Manifold | | |
| | Electrical System | | |
| 7 | E0088400 | Relay, DPNO | | |
| 8 | E2074400 | Transformer 1 1 5/24V (50VA) | | |
| 9 | E2074501 | Switch, Air Pressure (0-5000 FT.) Switch, Air | | |
| E2074504 | Pressure (5001-10000 FT.) | | |
| 10 | A2000200 | Blower/Motor, Induced Draft | | |
| 11 | E2103200 | Switch, Roll-out Safety | | |
| 12 | E0098700 | Switch, Limit | | |
| 14 | E0098500 | Terminal Strip | | |
| 15 | E2043600 | Fuse, 2 amp | | |
| | Water System | | |
| 16 | 20404703 | Heat Exchanger | | |
| 17 | A2000400 | Gauge, Temperature/Pressure | | |
| 18 | A2000600 | Gauge, Temperature | | |
| 19 | A0069000 | Valve, Pressure Relief 30 PSI | | |
| 20 | E2058300 | Well, Immersion | | |
| 21 | P0066600 | Valve, Drain 1/2' NPT | | |
| | Jacket and Fire Box Components | | |
| 22 | 20400703 | Base Weldment | | |
| 23 | 20404203 | Front Panel Weldment | | |
| 24 | 20403101 | Rear Panel | | |
| 25 | 20403201 | Left Side Panel | | |
| 26 | 20403202 | Right Side Panel | | |
| 27 | 20404003 | Top, Front Section | | |
| 28 | 20404103 | Top, Rear Section | | |
| 29 | 20403402 | Heat Shield, Rear Panel | | |
| 30 | | Heat Shield, Front Panel | | |
| 31 | 20404401 | Left Support Rail | | |
| 32 | 20404402 | Right Support Rail | | |
| 33 | 20403903 | Flue Collector Weldment | | |
| 34 | 20403003 | Burner Tray Weldment | | |
| 35 | 20086800 | Control Box Weldment | | |
| 36 | 20087100 | Control Box Cover | | |
| 37 | 20403303 | Burner Cover - A - Sea Level | | |
| 20404101 | B - High Altitude | | |
| 38 | 20404604 | Orifice Plate, Nat. (0-5000 FT.) | | |
| 20404604 | Orifice Plate, Nat. (5001-10,000 FT.) | | |
| 20404604 | Orifice Plate, LP (0-5000 FT.) | | |
| 20404611 | Orifice Plate, LP (5001-10,000 FT.) | | |
| 39 | 10469503 | Tile Cover | | |
| 40 | 10485303 | Heat Exchanger Baffle | | |
| 41 | T2007703 | Front Refractory | | |
| 42 | T2007803 | Rear Refractory | | |
| 43 | F2007003 | Securement Cable | | |
| 44 | 20400400 | Flue Outlet Weldment (0-5000 FT.) | | |
| D2004201 | Flue Outlet Weldment (5001-10,000 FT.) | | |
