10
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Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
INS
TALLA
TION
BACKGROUND:
Water expands when
heated, and the increased volume
of water must have a place to go, or
thermal expansion will cause large
increases in water pressure (despite
the use of a Pressure Reducing Valve
on the home’s main water supply
line). The Safe Drinking Water Act of
1974 requires the use of back
fl
ow
preventers and check valves to restrict
water from your home reentering
the public water system. Back
fl
ow
preventers are o en installed in water
meters and may not be readily visible.
As a result, most all plumbing systems
today are now “closed,” and almost all
homes now need a Thermal Expan-
sion Tank.
A Thermal Expansion Tank is a
prac cal and inexpensive way to help
avoid damage to the water heater,
washing machine, dishwasher, ice
maker and even toilet valves. If your
toilet occasionally runs for no appar-
ent reason (usually brie
fl
y at night),
that may be due to thermal expansion
increasing the water pressure tempo-
rarily.
✓
Water pipe and
tank leaks
Leaks from plumbing pipes or from
the water heater itself can damage
property and could cause a
fi
re risk.
Figure 8 -
A suitable drain pan piped to an
adequate drain can help protect flooring
from leaks and drips.
• Install a suitable drain pan (avail-
able at your local plumbing supply
stores ) under the water heater (Fig-
ure 8) to catch condensation or
leaks in the piping connections or
tank. Most codes require and we
recommend installing the water
heater in a drain pan that is piped
to an adequate drain. The drain pan
must be at least two inches wider
than the diameter of the water
heater. Install the drain pan so the
water level would be limited to a
maximum depth of 1-3/4”.
✓
Water tempera-
ture regula on
Figure 9 -
Thermostatic Mixing Valves in-
stalled at each point -of-use can help pre-
vent scalds.
Install Thermosta c Mixing Valves
(Figure 9) to regulate the temperature
of the water supplied to each point-
of-use (for example, kitchen sink,
bathroom sink, bath, shower). Con-
sult the valve manufacturer’s instruc-
ons or a quali
fi
ed person.
WARNING! Even if the water heater
thermostat is set to a rela vely low
temperature, hot water can scald.
Install a Thermosta c Mixing Valves at
each point of use to reduce the risk of
scalding (page 6).
BACKGROUND:
A Thermosta c Mix-
ing Valve, installed at each point-
of-use, mixes hot water from the
water heater with cold water to more
precisely regulate the temperature of
hot water supplied to
fi
xtures. If you
aren’t sure if your plumbing system
is equipped with properly installed
and adjusted Thermosta c Mixing
Valves at each point where hot water
is used, contact a quali
fi
ed person for
more informa on.
Step 2:
Verify that the loca on
is appropriate
Before installing your water heater,
ensure that:
1
The water heater will be:
• Installed indoors close to
the center of the plumbing
system.
• In a suitable drain pan piped to an
adequate floor drain or external to
the building (Figure 8).
• In an area that will not freeze
• In an area that is suitable for install-
ing the water heater vertically and
on a level surface.
• Install where a typical home appli-
ance sound would not cause a dis-
turbance
• Should not be used for space heat-
ing.
NOTICE! Water heater must be level!
NOTICE! Water heater must be level!
INSTALLATION
Содержание 153.592500
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