Replacing The Eco; Water Faucet; Access Panel; Drain Valve - A.O. Smith ProLine XE Installation Instructions And Use & Care Manual

MAINTENANCE
Open a hot water faucet and
3
let the hot water run until it is
cool.
Figure 40 - Water Faucet
WARNING! Be sure the water runs
cool before draining the tank to re-
duce the risk of scalding.
Connect a garden hose to the
4
drain valve and place the other
end of the hose in a drain or
outside (or use buckets). Turn OFF the
cold water valve that supplies the water
heater. Open the drain valve on the
water heater. Opening a hot water
faucet will help the tank drain faster.
Remove the upper or lower
5
access panel on the water
heater, and then fold back the
insulation and remove the plastic
element/thermostat cover.
Figure 41 - Access Panel
With the tank drained and
6
power off, remove the power
wires from the element you
intend to replace.
28 • Residential Hybrid Electric Heat Pump Water Heater Use and Care Guide
Remove the bad element
7
using an element wrench.
Make sure the new element is
8
the correct replacement by
referring to the water heater's
data plate for voltage and wattage
information.
Clean the threads in the tank
9
opening with a rag. Insert the
new element equipped with a
rubber gasket. NOTE: Use a drop of
hand dishwashing liquid to lubricate
the gasket to help avoid damaging the
gasket as it is being tightened. Tighten
with an element wrench.
NOTICE! Do not turn power back on
until the tank is completely full of water.
For complete instructions on filling the
tank, follow Step 10 in the Installation
section.
Refill the tank by opening the
10
cold water supply valve. Make
sure a hot water faucet is
open and the drain valve is closed.
Allow the hot water to run full for at
least three minutes to make sure the
tank has all the air removed and is
completely full of water. Failure to
perform this step can cause the upper
heating element to burn out. Once you
are certain the tank is completely full
of water, close the hot water faucet.
Figure 42 - Drain Valve
Check the newly installed
11
element for leaks. If a leak is
present, tighten the element
until the leak stops. If you cannot stop
the leak, drain the tank and remove
the element. Inspect the gasket for
damage. If the gasket is damaged,
replace the gasket and re-install the
element.
Once the element is success-
12
fully installed and there are no
leaks, replace the power
wires, thermostat cover, insulation,
and access panel. Make sure all wire
connections are tight. Replace the
cover on the electrical junction box.
Restore power to the water
13
heater. It may take two hours
for the tank to heat up.

Replacing the ECO

WARNING! Working on an ener-
gized circuit can result in severe injury
or death from electrical shock. Turn
power off. Check wires with a non-
contact circuit tester to make sure
power is off. When you are finished,
be sure all covers are secured to re-
duce the risk of fire and electric shock.
To replace the ECO, you'll need the fol-
lowing tools and supplies:
• A non-contact circuit tester. Always
turn power OFF and check with a
non-contact circuit tester before work-
ing on the water heater.
Figure 43 - ECO