Water System Piping - Rheem PVG Installation, Operation And Service Manual

GENERAL INFORMATION
Water piping, fittings, and valves must be properly installed for the correct
and safe operation of this water heater. Please note the following:
DO NOT install this water heater with iron piping. The system should
be installed only with new piping that is suitable for potable (drinkable)
water such as copper, CPVC, or polybutylene. DO NOT use PVC water
piping.
DO NOT use any pumps, valves, or fittings that are not compatible
with potable water.
DO NOT use valves that may cause excessive restriction to water
flow. Use full flow ball or gate valves only.
DO NOT use 50/50 tin-lead solder (or any lead based solder) in potable
water lines. Use 95/5 tin-antimony or other equivalent material.
DO NOT tamper with the thermostat, gas valve, ignitor control or
temperature and pressure relief valve. Tampering with any of the
components is DANGEROUS and can result in property damage, severe
injury or death. Tampering voids all warranties. Only qualified
technicians should service these components.
DO NOT use with piping that has been treated with chromates, boiler
seal, or other chemicals.
DO NOT add any chemicals to the system piping which will
contaminate the potable water supply.
DO NOT install check valve type devices in the cold water supply line
to the water heater.
CAUTION
NEVER OPERATE AN EMPTY OR PARTIALLY FILLED WATER
HEATER. THIS CAN RESULT IN SERIOUS DAMAGE TO THE TANK.
TEMPERATURE & PRESSURE RELIEF VALVE
WARNING
DO NOT ATTEMPT TO OPERATE THIS WATER HEATER WITHOUT A
PROPERLY INSTALLED TEMPERATURE AND PRESSURE RELIEF
VALVE. FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
For protection against excessive pressures and temperatures, a
temperature and pressure relief valve must be installed in the opening
marked "T & P RELIEF VALVE" (see Figure 13). This valve must be design
certified by a nationally recognized testing laboratory that maintains
periodic inspection of the production of listed equipment or materials as
meeting the requirements for Relief Valves and Automatic Shut-off Devices
for Hot Water Supply Systems., ANSI Z21.22. The function of the
temperature and pressure relief valve is to discharge water in large
quantities in the event of excessive temperature or pressure developing in
the water heater. The valve must not exceed the working pressure of the
water heater as stated on the data plate. TO PREVENT PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH, THE RELIEF VALVE MUST
BE ALLOWED TO OPERATE PROPERLY.
Only a new temperature and pressure relief valve should be used with your
water heater. Do not use an old or existing valve as they may damaged or
not be adequate for the working pressure of the new water heater. Do not
place any valve between the relief valve and the tank.

WATER SYSTEM PIPING

THE TEMPERATURE & PRESSURE RELIEF VALVE:
•
Must not be in contact with any electrical part.
•
Must be connected to an adequate discharge line.
•
Must not exceed the working pressure shown on the data plate of the
water heater.
THE DISCHARGE LINE:
•
Must not be smaller than the pipe size of the relief valve.
•
Must not be capped, blocked, plugged or contain any valve between
the relief valve and the end of the discharge line.
•
Must terminate 6 inches above a floor drain or external to the building.
•
Must be capable of withstanding 250°F (121°C) without distortion.
•
Must be installed to allow complete drainage of both the temperature
and pressure relief valve and discharge line.
WARNING
FAILURE TO INSTALL AND MAINTAIN A NEW PROPERLY LISTED
TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE
MANUFACTURER FROM ANY CLAIMS WHICH MIGHT RESULT FROM
EXCESSIVE TEMPERATURE OR WATER PRESSURE.
Manually operate the temperature and pressure relief valve at least once a
year to make sure it is working properly. To prevent water damage, the
valve must be properly connected
to a
terminates at an adequate drain.
Standing clear of the outlet
(discharged water may be hot),
slowly lift and release the lever
handle on the temperature and
pressure relief valve to allow the
valve to operate freely and return
to its closed position. If the valve
fails to completely reset and
continues to release water, immediately shut off the manual gas valve and
the cold water inlet valve and call a qualified service technician.
discharge line which
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