Removing The Old Water Heater; Let The Hot Water Run Until It Is Cool; Draining The Old Water Heater; Removing The T&P Relief Valve Discharge Pipe - A.O. Smith ProLine XE Installation Instructions And Use & Care Manual

INSTALLATION
Step 3:
Removing the old water
heater
Read each installation step
1
and decide if you have the
necessary skills to install the
water heater. Only proceed if you can
safely perform the work. If you are
not comfortable, have a qualified
person perform the installation.
Locate the water heater's
2
circuit breaker and turn it
OFF (or remove the circuit's
fuses).
On the old water heater,
3
remove the electrical
junction box access panel.
Using a non-contact circuit tester,
check the wiring to make certain the
power is OFF.
WARNING! Working on an ener-
gized circuit can result in severe injury
or death from electrical shock.
Disconnect the electrical
4
wires.
Open a hot water faucet and
5
let the hot water run until it
is cool (This may take 10
minutes or longer).
Figure 10 - Let the hot water run until it is
cool.
10 • Residential Hybrid Electric Heat Pump Water Heater Use and Care Guide
WARNING! Be sure the water runs
cool before draining the tank to re-
duce the risk of scalding.
Connect a garden hose to
6
the drain valve and place the
other end of the hose in a
drain, outside, or a bucket. (Note
that sediment in the bottom of the
tank may clog the valve and prevent
it from draining. If you can't get the
tank to drain, contact a qualified
person.)
Turn the cold water supply
7
valve OFF.
Open the drain valve on the
8
water heater.
Figure 11 - Draining the old water heater.
Also open a hot water faucet
9
to help the water in the tank
drain faster.
When the tank is empty,
10
disconnect the Temperature &
Pressure (T&P) Relief Valve
discharge pipe. You may be able to
reuse the discharge pipe, but do not
reuse the old T&P Relief Valve. A new
T&P Relief Valve comes installed on
your water heater (or on some models,
is in the carton with the water heater).
Figure 12 - Removing the T&P Relief Valve
pipe.
discharge
Disconnect the water pipes.
11
Many water pipes are
connected by a threaded
union which can be disconnected with
wrenches. If you must cut the water
pipes, cut the pipes close to the water
heater's inlet and outlet connections,
leaving the water pipes as long as
possible. If necessary, you can make
them shorter later when you install
the new water heater.
12
Remove the old water heater.
WARNING! Use two or more people
to remove or install water heater.
Failure to do so can result in back or
other injury.