Watter Saver HPWH500AAOC Installation, Operation And Maintenance Manual - page 5
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ECR INTERNATIONAL
5
Discharge Line to Drain
Manual Relief Lever
Temperature and
Pressure Relief Valve
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, after several
attempts, the valve fails to close and continues to re-
lease water, immediately shut off electrical power and
the cold water inlet valve and call a qualified techni-
cian.
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.
• DO NOT Tamper with any components of the
water heater. Tampering is dangerous and can
result in property damage, severe injury, or
death. Tampering with the unit voids all warran-
ties so only a qualified technician should ser-
vice the unit.
Never operate an empty or partially filled water
heater. This can result in serious damage to the
tank and will destroy the heating elements.
CAUTION
!
!
Do not attempt to operate the WatterSaver
TM
with-
out a properly installed temperature and pressure
relief valve. Operating the WatterSaver
TM
without
a T&P valve will void the warranty and can result
in property damage, personal injury, or death.
TEMPERATURE AND PRESSURE RELIEF
VALVE (T&P VALVE)
Do not use an old or existing T&P valve with your
WatterSaver™ Heat Pump Water Heater as it may
be damaged or inadequate for the pressure of the
unit.
Discharging water will be hot and can cause
scald injuries or property damage. Discharge
lines must be properly installed and piped to an
adequate drain.
FIGURE 2- Temperature and Pressure Relief Valve and
Condensate Drain Line Installation
NOTE: Condensate vent must be even with top of tank for proper
operation.
Drain Pan
(2 1/2” Max. depth)
WARNING
!
!
WARNING
!
!
DANGER
!
!
Hot Water Outlet
Cold Water Inlet
Drain Line
(3/4” Min. I.D.)
Drain
Primary
Condensate
Drain 1/2” I.D.
( Must be piped
separately and
routed to an
adequate drain)
Discharge
Line
( 6” Max. above
drain)
1” Min.
Union
Secondary
Condensate
Drain 3/8” I.D.
( Must be piped
separately and routed
to an adequate drain)
T&P Valve
Thermal Trap
Condensate
Vent
(Recommended for
proper condensate
drainage)
Thermal Trap