Kenmore 153.592500, Use & Care Manual

Page: 9 / 35

Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide • 9
INS
TALLA
TION
Follow these steps for proper
installa on
:
Step 1:
✓
Verify that your
home is equipped
and up-to-date for
proper opera on
Installing a new water heater is the
perfect me to examine your home’s
plumbing system and make sure the
system is up to current code standards.
There have likely been plumbing code
changes since the old water heater was
installed. We recommend installing the
following accessories and any other
needed changes to bring your home up
to the latest code requirements.
Use this checklist and inspect your
home. Install any devices you need to
comply with codes and assure that your
new water heater performs at its best.
Check with your local plumbing o
ffi cial
for more informa on.
✓
Water pressure
We recommend checking your
home’s water pressure with a pressure
gauge (Figure 6). Most codes allow a
maximum incoming water pressure of
80 psi. We recommend a working pres-
sure no higher than 50-60 psi.
HOW: Purchase an inexpensive water
pressure gauge available at your local
plumbing supply stores. Connect the
Water Pressure Gauge to an outside
faucet and measure the maximum wa-
ter pressure experienced throughout
the day (highest water pressures o en
occur at night).
Figure 6 - Use a Water Pressure Gauge to
make sure your home’s water pressure is
not too high.
To limit your home’s water pressure:
Locate your home’s Pressure Reduc-
ing Valve (PRV) on the main incoming
(cold) water supply line and adjust the
water pressure control to between 50
and 60 psig. If your home does not
have a Pressure Reducing Valve, install
a PRV on the home’s main water sup-
ply line and set it to between 50 and
60 psig. Pressure Reducing Valves are
available at your local plumbing supply
stores .
BACKGROUND: Over the years, many
u li es have increased water sup-
ply pressures so they can serve more
homes. In some homes today, pres-
sures exceed 100 psig. High water
pressures can damage water heaters,
causing premature leaks. If you have
replaced toilet valves, had a water
heater leak, or had to repair applianc-
es connected to the plumbing system,
pay par cular a en on to your home’s
water pressure. When purchasing a
PRV, make sure the PRV has a built-in
bypass.
✓
Water Pressure/
Thermal Expansion
Verify that you have a properly sized
Thermal Expansion Tank (Figure 7). We
recommend installing an expansion
tank if your home does not have one.
Codes require a properly pressurized,
properly sized Thermal Expansion Tank
in almost all homes. (See illustra on
on inside front cover.)
Figure 7 - A Thermal Expansion Tank helps
protect the home’s plumbing system from
pressure spikes.
HOW: Connect the Thermal Expansion
Tank (available at your local plumbing
supply stores ) to the cold water supply
line near the water heater. The expan-
sion tank contains a bladder and an air
charge. To work properly, the Thermal
Expansion Tank must be sized accord-
ing to the water heater’s tank capacity
and pressurized to match the home’s
incoming water pressure. Refer to the
installa on instruc ons provided with
the Thermal Expansion Tank for instal-
la on details.
INSTALLATION