Installation Guide

30 • Residen al Electric Water Heater Use and Care Guide
MAINTENANCE
Figure 42 - Non-Contact Circuit Tester
3
Remove the upper access
panel/ESM on the water
heater and carefully fold back
the insula on and plas c element/
thermostat cover.
4
The replacement electronic
thermostat should match the
original electronic thermostat.
5
Mark the wires with tape so
you’ll know how to put them
back on.
6
Disconnect the wires from the
bad electronic thermostat and
remove the electronic ther-
mostat from the metal moun ng clip.
7
Install the new electronic
thermostat in the metal
moun ng clip.
8
Make sure the new thermo-
stat fi ts snuggly against the
tank. If needed, you can bend
the thermostat moun ng clip un l the
electronic 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/ESM.
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
annual maintenance instruc ons
provided by the manufacturer of the
T&P Relief Valve (yellow label a ached
to T&P Relief Valve). If no label is at-
tached to the T&P Relief Valve, follow
the instruc ons in this sec on. Miner-
als in the water can form deposits
that cause the valve to s ck or create
blocked passages, making 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 opera ng the valve manually,
check that it will discharge in a place
for secure disposal. If water does
not fl ow freely from the end of the
discharge pipe, turn OFF the power
to the water heater. Call a qualifi ed
person to determine the cause.
Figure 43 - T&P Relief Valve
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.
• At least every fi ve years, have a quali-
fi ed person inspect the T&P Relief
Valve and discharge pipe. Damage
caused by corrosive water condi ons,
mineral deposits, or other problems
can only be determined when a qual-
ifi ed 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 Expansion Tank. If your
T&P Relief Valve drips, see page 28.
MAINTENANCE