Watter Saver HPWH500AAOC Installation, Operation And Maintanance Manual - page 6
Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater
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6. Ensure the toggle switch on the control board (See “Re-
placement Parts List” on page 16 for location.) is in the “HP”
position. In the “ELEC” position, the heat pump system is
disabled and the unit will operate as an electric resistance
water heater ONLY.
7. Connect wires L1, L2, and Ground to the electric box
located in front of the evaporator coil on top of the tank.
8. Replace the shroud and ensure wires L1, L2, and Ground
pass through the opening in the top of the shroud.
WATER SYSTEM PIPING
Water piping, fittings, and valves must be properly installed
in accordance with local plumbing codes for the correct and
safe operation of the Watter$aver Heat Pump Water Heater.
Please note the following:
• DO NOT install the water heater with piping that is
unsuitable for drinking water (iron piping, PVC piping,
or piping that has been treated with chromates, boiler
seal, or other chemicals). Use only new piping such
as copper, CPVC, or polybutylene.
• DO NOT add any chemicals to the piping which
could contaminate the water supply.
• DO NOT use any type of pump, valve, or fitting that is
unsuitable for potable water.
• DO NOT install check valves in the cold water sup-
ply to the unit.
• DO NOT use valves that excessively restrict water
flow. Use only full flow or gate valves.
• DO NOT use any lead-based solder in potable water
lines. Use 95/5 tin-antimony or another suitable non-
lead solder.
• DO NOT tamper with any components of the water
heater. Tampering is dangerous and can result in prop-
erty damage, severe injury, or death. Tampering with
the unit voids all warranties so only a qualified techni-
cian should service the unit.
CAUTION
Never operate an empty or partially filled water heater.
This can result in serious damage to the tank and will
destroy the heating elements.
TEMPERATURE AND PRESSURE RELIEF VALVE
(T&P VALVE)
WARNING
Do not attempt to operate the Watter$aver without a
properly installed temperature and pressure relief valve.
Operating the Watter$aver without a T&P valve will void
the warranty and can result in property damage, per-
sonal injury, or death.
For protection against excessive pressure and temperatures,
a temperature and pressure relief valve must be installed in
the opening marked “T&P Valve” and connected to a proper
discharge line which terminates at an adequate drain. (Figure
2.) A T&P valve is furnished with the water heater.
This valve must be design certified by a nationally recognized
testing laboratory as meeting the requirements for relief valves
and automatic shut-off devices for hot water supply systems.
The function of the T&P valve is to discharge water in large
quantities in the event of an excessive temperature or
pressure build up in the water heater. The valve must not
be in contact with any electrical part or exceed the
working pressure of the water heater as stated on the
rating plate.
WARNING
Do not use an old or existing T&P valve with your
Watter$aver™ Heat Pump Water Heater as it may be
damaged or inadequate for the pressure of the unit.
Manually operate the T&P valve at least once a year to make
sure it works properly. Because discharged water can be
hot, stand clear of the outlet and slowly lift the manual relief
lever on the valve. Then allow the
water to flow for 5-10 seconds and
let the valve “snap” closed. If, af-
ter several attempts, the valve
fails to close and continues to re-
lease water, immediately shut off
electrical power and the cold wa-
ter inlet valve and call a qualified
technician.
DANGER
Discharging water will be hot and can cause scald in-
juries or property damage. Discharge lines must be
properly installed and piped to an adequate drain.
Discharge Line to Drain
Manual Relief Lever
Temperature and
Pressure Relief Valve