Water Piping - Mixing Valve Usage - A.O. Smith POWER VENT GAS Installation And Operating Manual

WATER PIPING - MIXING VALVE USAGE

TEMPERED
POTABLE WATER
DRAIN VALVE
This appliance has been design certifi ed as complying with
ANSI Z21.10.3/CSA 4.3 (latest revision) for water heaters
and is considered suitable for:
Water (Potable) Heating: All models are considered
suitable for water (potable) heating.
Please note the following:
The system should be installed only with piping that is
suitable for potable (drinkable) water such as copper,
CPVC, PEX or polybutylene. DO NOT use PVC water
piping.
316888-001 Rev. 00 dRaFt Jun 28 245
SUGGESTED PIPING
ARRANGEMENT
FOR TOP
CONNECTIONS
SHUT-OFF VALVE
COLD WATER
INLET
THERMAL
EXPANSION
TANK
MIXING
VALVE
(IF REQUIRED)
PIPE INSULATION
(RECOMMENDED)
METAL
DRAIN PAN
FIGURE 3
DO NOT use any pumps, valves, or fi ttings that are not
compatible with potable water.
DO NOT use valves that may cause excessive restriction
to water fl ow. Use full fl ow ball or gate valves only.
DO NOT use any lead based solder in potable water
lines. Use appropriate tin-antimony or other equivalent
material.
DO NOT tamper with the gas control/thermostat, igniter,
fl ammable vapour sensor or temperature and pressure
relief valve. Tampering voids all warranties. Only qualifi ed
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.
HOT WATER CAN SCALD:
Water heaters are intended to produce hot water. Water
heated to a temperature which will satisfy space heating,
clothes washing, dish washing, cleaning and other
sanitizing needs can scald and permanently injure you
upon contact. Federal and provincial codes require that
the temperature of water exiting certain fi xtures (e.g.
showers and lavatories) be limited to 49°C (120°F). Some
people are more likely to be permanently injured by hot
www.hotwater.com
TEMPERED
POTABLE WATER
TEMPERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE
PIPE (DO NOT
CAP OR PLUG)
300mm
(12 in.)
MAX.
AIR GAP
FLOOR
DRAIN
TO SUITABLE
DRAIN
9