User Guide

TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
Temperature And Pressure Relief Valves
Discharge of the T&P valve may indicate that an unsafe temperature or pressure condition exists.
Contact a licensed plumber immediately!
Technical Competence, Product Confidence
Page 3 of 3
1220.doc
How to replace the Temperature and Pressure Relief Valve
CAUTION: Draining your water heater for this procedure may put you at risk of being scalded by hot water.
Please be careful when working on your water heater.
1. Turn the power OFF to the water heater at the circuit breaker
(electric heater) or main gas line (gas heater).
2. Fasten a length of garden hose to the drain valve at the
bottom of the heater. Put the other end of the garden hose in the
nearest floor drain or snake it outside the home.
3. Close the shut off valve at the cold water inlet line.
4. Open the temperature and pressure relief valve at the top of
the heater. Now open the drain valve and allow the water to
drain.
CAUTION: THE WATER WILL BE HOT...........BE SURE
NO ONE IS NEAR THE DRAIN HOSE OR THEY COULD
BE SCALDED.
5. When the water stops, close the drain valve and remove the
hose.
6. Remove the old temperature and pressure relief valve. You
will need to remove the drain tube apparatus that carries the
discharge water to the drain pan or outside your home. You may
get some additional water draining from the spud. Have some
rags handy. Replace with a new temperature and pressure relief
valve. It is a 3/4 inch National Pipe Thread (NPT) valve. You
may find one at any plumbing house or home store. Use pipe
sealer or Teflon tape to seal the threads. Make sure the new
temperature and pressure relief valve is in the OPEN position.
7. Open a hot water faucet somewhere in the home. Open the
shut off valve at the cold water inlet line. You will hear the
heater start to fill.
8. When you have a steady stream of water from the
temperature and pressure valve tube, close the valve; when you
have a steady stream of water from the hot water faucet, turn the
faucet off.
9. Turn the power ON to the water heater at the circuit breaker (electric heater) or main gas line (gas heater; relight
pilot if required). Allow the water heater to recover. Check the temperature and pressure relief valve one more time
to make sure it is tight.