Temperature and Pressure
Relief Valve
Explosion Hazard
If the temperature and pressure relief valve is dripping or leaking, have a qualified service technician replace it.
•Do not plug valve.
•Do not remove valve.
Failure to follow these instructions can result in death or explosion.
Optional location some models only
Temperature and
Pressure Relief Valve
Discharge line 3/4” min.
Do not cap or plug.
| 6” max. |
Drain | Figure 15 |
| |
Drain Pan | Temperature and Pressure |
Relief Valve Installation |
For protection against excessive pressures and temperatures, a temperature and pressure relief valve must be installed in the opening marked “T & P RELIEF VALVE” (see Figure 15). This valve must be design certified by a nationally recognized testing laboratory that maintains periodic inspection of the production of listed equipment or materials as meeting the requirements for Relief Valves and Automatic
Important: Only a new temperature and pressure relief valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater. Do not place any valve between the relief valve and the tank.
The Temperature & Pressure Relief Valve:
!Must not be in contact with any electrical part.
!Must be connected to an adequate discharge line.
!Must not be rated higher than the working pressure shown on the data plate of the water heater.
The Discharge Line:
!Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.
!Must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the discharge line.
!Must terminate a maximum of six inches above a floor drain or external to the building.
!Must be capable of withstanding 250°F (121°C) without distortion.
!Must be installed to allow complete drainage of both the valve and discharge line.
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