Where to install temperature and pressure relief valve?
Install this temperature and pressure relief valve (T&P) valve directly in the top or side T&P opening that is indicated on the tank. ! The valve must be installed so that the temperature-sensing element is immersed in the water within the top 6”(152mm) of the tank. !
What should the temperature of a drain line be?
The drain line shall terminate plain, not threaded, with a material serviceable for temperatures up to 250°F or greater. The drain pipe must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the drain pipe.
Do you need a drain pipe for a pressure valve?
To avoid water damage or scalding due to valve operation, a drain pipe must be connected to the valve outlet and run to a safe place for water disposal. ! The drain pipe must be a short as possible and be the same size as the valve discharge connection throughout its entire length. !
How do you install a temperature and pressure valve on a water heater?
1. Turn off power and/or gas supply to the water heater. 2. Shut off the water supply and open a nearby hot water faucet. 3. Drain water from the tank until the water level is below the T&P opening. Note:For proper draining procedures refer to “Draining and Flushing” in the manufacturer’s instruction manual. 4.
Install this temperature and pressure relief valve (T&P) valve directly in the top or side T&P opening that is indicated on the tank. ! The valve must be installed so that the temperature-sensing element is immersed in the water within the top 6”(152mm) of the tank. !
The drain line shall terminate plain, not threaded, with a material serviceable for temperatures up to 250°F or greater. The drain pipe must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the drain pipe.
How do you install a TPR drain pipe?
Use the first wrench to hold the TPR in place, when you use the other to unscrew the drain pipe. Cut the new pipe to length. Apply PTFE tape (or your preferred pipe dope) to the threads of the pipe. Use the two wrenches to install the new pipe. NOTE: This answer assumes a side discharge, threaded TPR valve.
What are the ASME standards for relief valve drains?
Relief valve drains shall comply with Section P2904.5 or ASME A112.4.1. IRC P2904.5 Water-distribution pipe. Water-distribution piping within dwelling units shall conform to NSF 61 and shall conform to one of the standards listed in Table P2904.5.
