Residenal Hybrid Electric Heat Pump Water Heater Use and Care Guide • 13
INSTALLATION
3
Terminate the discharge pipe
a maximum of 12 in/300 mm
above a oor drain, sump or
other safe locaon. Do not drain the
discharge pipe into the drain pan;
instead pipe it separately to an
adequate drain.
DISCHARGE
PIPE
DRAIN
PIPE
Figure 16 - The end of the T&P Relief Valve
discharge pipe must stop no more than 12
in/300 mm above a drain.
4
Do not place any valve or
other restricon between the
tank and T&P Relief Valve. Do
not cap, block, plug, or insert any valve
between the T&P Relief Valve and the
end of the discharge pipe. Do not
insert or install any reducer in the
discharge pipe.
1
If one is not already installed,
install a manual shuto valve
in the cold water line that
supplies the water heater. Install the
shuto valve near the water heater so
that it is readily accessible. Only use
valves that are compable with
potable water. Use only full-ow ball
or gate valves. Other types of valves
may cause excessive restricon to the
water ow.
2
Install a Thermostac Mixing
Valve. Consult the valve
manufacturer’s instrucons or
a qualied person.
Figure 17 - Install Thermostatic Mixing
Valves where required.
3
For water heaters that are fed
by a solar water heang
system (or any other pre-heat-
ing system), always install a Thermo-
stac Mixing Valve or other tempera-
ture liming device in the inlet water
supply line to limit water supply inlet
temperature to 140°F/60°C. Solar water
heang systems can supply water with
temperatures exceeding 170°F/77°C
and may result in water heater malfunc-
on.
page 4
supply
1
Determine the type of water
pipes in your home. Most
homes use copper water pipes
or cross-linked polyethylene (PEX), but
some use CPVC. Use ngs appropriate
for the type of pipe in your home. Do
not use iron or PVC pipe – they are not
suitable for potable water.
2
Connect the cold water supply
using 3/4 inch Naonal Pipe
Thread “NPT” to the blue cold
water connecon near the boom of
the heater.
For ease of removing the water heater
for service or replacement, connect
the water pipes with a union. We
recommend using a dielectric-type
union (available at your local plumbing
supplier). Dielectric unions can help
prevent corrosion caused by tiny elec-
tric currents common in copper water
pipes and can help extend the life of
the water heater.
In order to optimize efficiency of this
unit, it is not recommended for use
with a recirculation loop. Using this in
a recirculation loop may cause the unit
to run excessively.
INSTALLATION
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