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Gas piping with fl exible connector.
FIGURE 7
Gas piping with all black iron pipe to gas control.
FIGURE 8
SEDIMENT TRAPS
A sediment trap (dirt leg) shall be installed as close to the inlet of
the water heater as practical at the time of water heater installa-
tion. The sediment trap (dirt leg) shall be either a tee fi tting with
a capped nipple in the bottom outlet or other device recognized
as an effective sediment trap (dirt leg). If a tee fi tting is used,
it shall be installed in conformance with one of the methods of
installation shown in Figures 7 and 8.
Contaminants in the gas lines may cause improper operation of
the gas control valve that may result in fi re or explosion. Before
attaching the gas line be sure that all gas pipe is clean on the
inside. To trap any dirt or foreign material in the gas supply line,
a sediment trap (dirt leg) must be incorporated in the piping.
The sediment trap (dirt leg) must be readily accessible. Install in
accordance with the "Gas Piping" section. Refer to the current
edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54.
HOT WATER
OUTLET
UNION
DRAIN VALVE
FLOOR DRAIN
FILLING THE WATER HEATER
Never use this water heater unless it is completely full of water.
To prevent damage to the tank, the tank must be fi lled with water.
Water must fl ow from the hot water faucet before turning "ON"
gas to the water heater.
To fi ll the water heater with water:
1.
Close the water heater drain valve by turning the handle
clockwise (
). The drain valve is on the lower front of the
water heater.
2.
Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open when
the water heater is in use.
3.
To insure complete fi lling of the tank, allow air to exit by
opening the nearest hot water faucet. Allow water to run until
a constant fl ow is obtained. This will let air out of the water
heater and the piping.
4.
Check all water piping and connections for leaks. Repair as
needed.
VENTING
NEVER OPERATE THE WATER HEATER UNLESS IT IS
VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR
SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE,
EXPLOSION OR ASPHYXIATION.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND
15
COLD WATER
INTLET
SHUTOFF
VALVE
UNION
TEMPERATURE
AND PRESSURE
RELIEF VALVE
DISCHARGE PIPE
(DO NOT CAP
OR PLUG)
METAL
DRAIN PAN
6" MAXIMUM
AIR GAP
FIGURE 9
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