| Part Description | RH | RH | RHT |
|---|---|---|---|
| 07/2001 to 04/2005 | 05/2005 to Present | 05/2005 to Present | |
| Inducer Fan Blower | TP-55A | TP-55A | TP-55A |
| Circuit Board | TP-551 | TP-3051 | TP-3051 |
| Ignition Device | TP-555 | TP-3055 | TP-3055 |
| Gas Valve (Nat) | TP-240 | TP-240 | TP-3140 |
| Gas Valve (LP) | TP-241 | TP-241 | TP-3141 |
| Indicator Lights | TP-328 | TP-328 | TP-828 |
| Control Voltage | 120V | 120V | 24V (external) |
Pressure Switch
| Model | Year Range | 50 MBH | 60-75 MBH | 100 MBH | 125 MBH | 150 MBH | 175 MBH | 200 MBH |
|---|---|---|---|---|---|---|---|---|
| RH | 07/2001 to 04/2005 05/2005 to Present | TP-264B | TP-264B | TP-264B | TP-264E | TP-264E | TP-264D | |
| RHT | 05/2005 to Present | TP-264B | TP-264B | TP-264B | TP-264E | TP-264E | TP-264D | TP-264F |














