Installation Guide

Residen al Electric Water Heater Use and Care Guide • 23
MAINTENANCE
3
Remove the upper or lower
access panel on the water
heater and carefully fold back
the insula on and plas c element/
thermostat cover.
4
Make sure the replacement
thermostat matches the
original thermostat.
5
Mark the wires with tape so
you’ll know how to put them
back on.
6
Disconnect the wires from the
bad thermostat and remove
the thermostat from the metal
moun ng clip.
7
Install the new thermostat in
the metal moun ng clip.
8
Make sure the new thermostat
fi ts snuggly against the tank.
You should NOT be able to slip
a business card between the thermo-
stat and the tank. If you can, bend the
thermostat moun ng clip un l the
thermostat fi ts  ghtly against the tank.
9
A ach the wires following the
wiring diagram on the water
heater’s label. Make sure all
wire connec ons are  ght.
10
Replace the plas c element/
thermostat cover, insula on,
and access panel.
11
Replace the cover on the
electrical junc on box.
12
Restore power to the water
heater. It may take two hours
for the tank to heat up.
T&P Relief Valve Maintenance
Read and follow the opera ng and an-
nual maintenance instruc ons provided
by the manufacturer of the T&P Relief
Valve (yellow label a ached to T&P
Relief Valve). Minerals in the water can
form deposits that cause the valve to
s ck or create blocked passages, mak-
ing the T&P Relief Valve inopera ve.
Follow these guidelines:
• At least annually, operate the T&P
Relief Valve manually to ensure the
waterways are clear and the valve
mechanism moves freely (above).
Before operating the valve manually,
check that it will discharge in a place
for secure disposal. If water does
not flow freely from the end of the
discharge pipe, turn OFF the power
to the water heater. Call a qualified
person to determine the cause.
WARNING! Hot water will be
released. Before opera ng the T&P
relief valve manually, check that it
will discharge in a safe place. If water
does not fl ow freely from the end of
the discharge pipe, turn the power to
the water heater OFF. Call a qualifi ed
person to determine the cause.
Figure 38 - T&P Relief Valve
• At least every five years, have a
qualified person inspect the T&P
Relief Valve and discharge pipe.
Damage caused by corrosive water
conditions, mineral deposits, or
other problems can only be deter-
mined when a qualified person
removes and inspects the valve and
its components.
• Note that a dripping T&P Relief
Valve is usually caused by the
home’s water pressure being too
high or the lack of a Thermal Expan-
sion Tank. If your T&P Relief Valve
drips, see page 19.
MAINTENANCE