Page 227 - 12558 Drexler Builder Binder.pdf

MAINTENANCE

Remove the upper or lower T&P Relief Valve Maintenance other problems can only be deter-
3 access panel on the water mined when a qualified person
heater and carefully fold back Read and follow the opera ng and removes and inspects the valve and
the insula on and plas c element/ annual maintenance instruc ons its components.
thermostat cover. provided by the manufacturer of the • Note that a dripping T&P Relief
T&P Relief Valve (yellow label a ached Valve is usually caused by the
Make sure the replacement to T&P Relief Valve). Minerals in the
4 thermostat matches the water can form deposits that cause home’s water pressure being
too high or the lack of a Thermal
original thermostat. the valve to s ck or create blocked Expansion Tank. If your T&P Relief
passages, making the T&P Relief Valve Valve drips, see page 20.
Mark the wires with tape so
5 you’ll know how to put them inopera ve. Follow these guidelines:

back on. • At least annually, operate the T&P
Relief Valve manually to ensure the
Disconnect the wires from the waterways are clear and the valve
6 bad thermostat and remove mechanism moves freely (above).

the thermostat from the Before operating the valve manu-
metal moun ng clip. ally, check that it will discharge in a
place for secure disposal. If water
Install the new thermostat in does not flow freely from the end
7 the metal moun ng clip. of the discharge pipe, turn OFF the
power to the water heater. Call a
Make sure the new thermo- qualified person to determine the
8 stat ts snuggly against the cause.

tank. You should NOT be able WARNING! Hot water will be
to slip a business card between the released. Before opera ng the T&P
thermostat and the tank. If you can, relief valve manually, check that it
bend the thermostat moun ng clip will discharge in a safe place. If water

un l the thermostat ts ghtly against does not ow freely from the end of

the tank.
the discharge pipe, turn the power to

A ach the wires following the the water heater OFF. Call a qualied
9 wiring diagram on the water person to determine the cause.
heater’s label. Make sure all
wire connec ons are ght.

Replace the plas c element/
10 thermostat cover, insula on,
and access panel.

Replace the cover on the
11 electrical junc on box.

Restore power to the water
12 heater. It may take two hours Figure 38 - T&P Relief Valve
for the tank to heat up. • At least every five years, have a
MAINTENANCE Relief Valve and discharge pipe.
qualified person inspect the T&P

Damage caused by corrosive water
conditions, mineral deposits, or

24 • Residen al Electric Water Heater Use and Care Guide