American Water Heater 6510319 Water Heater User Manual


 
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 gas valve/thermostat,
igniter, thermocouple, or temperature and pressure
relief valve. Tampering voids all warranties. Only
qualified service 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.
Closed System/Thermal Expansion
Periodic discharge of the temperature and pressure
relief valve may be due to thermal expansion in a
closed water supply system. The water utility supply
meter may contain a check valve, backflow preventer or
water pressure reducing valve. This will create a closed
water system. During the heating cycle of the water
heater, the water expands causing pressure inside the
water heater to increase. This may cause the
temperature and pressure relief valve to discharge
small quantities of hot water. To prevent this, it is
recommended that a diaphragm-type expansion tank
(suitable for potable water) be installed on the cold
water supply line. The expansion tank must have a
minimum capacity of 1.5 U.S. gallons for every 50
gallons of stored water. Contact the local water supplier
or plumbing inspector for information on other methods
to control this situation.
Important: Do not plug or remove the temperature
and pressure relief valve.
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