DOMESTIC WATER PIPING
12
There must be a 6" space between the outlet of relief valve piping and drain or floor. Do not hook up
to drain system directly without an air space. The relief valve must be periodically checked for prop-
er operation.
B. DOMESTIC HOT WATER EXPANSION TANK
A potable hot water expansion tank is required to offset the water expansion as the water is heated.
In most city plumbing systems, the water meter has a no return or back flow device built into the
system to prevent back flowing of water back into city mains. Some local codes require back flow
preventers on all incoming water supplies. The hot water expansion tank must be listed for potable
water use. The expansion tank should be located on the cold inlet piping close to the water heater.
C. DOMESTIC WATER PIPING
The domestic water connections must be installed in accordance to all local and national plumbing
codes or any applicable standard which prevails. The Phoenix Evolution is supplied with a rated mix-
PART 4: DOMESTIC WATER PIPING
(CONTINUED)
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WARNING
To avoid water damage or scalding due to relief valve operation:
• Discharge line must be connected to relief valve outlet and run to a safe place of
disposal. Terminate the discharge line in a manner that will prevent possibility of
severe burns or property damage should the valve discharge.
• Discharge line must be as short as possible and be the same size as the valve
discharge connection throughout its entire length.
• Discharge line must pitch downward from the valve and terminate at least 6” above
the floor drain where any discharge will be clearly visible.
• The discharge line shall terminate plain, not threaded, with a material serviceable for
temperatures of 375 °F or greater.
• Do not pipe the discharge to any place where freezing could occur.
• No shutoff valve shall be installed between the relief valve and boiler, or in the
discharge line. Do not plug or place any obstruction in the discharge line.
• Test the operation of the valve after filling and pressurizing system by lifting the lever.
Make sure the valve discharges freely. If the valve fails to operate correctly, replace it
with a new relief valve.
• Failure to comply with the above guidelines could result in failure of the relief valve
to operate, resulting in possibility of severe personal injury, death or substantial
property damage.
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CAUTION
NEVER USE DIELECTRIC UNIONS OR GALVANIZED STEEL FITTINGS ON ANY
DOMESTIC WATER CONNECTIONS OR AUXILIARY CONNECTIONS. USE ONLY
COPPER OR BRASS FITTINGS. TEFLON THREAD SEALANT MUST BE USED ON ALL
CONNECTIONS.
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CAUTION
The domestic hot water expansion tank must be suitable for hot potable water.
Summary of Contents for Phoenix Evolution
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