Sediment Traps; Filling The Water Heater - A.O. Smith BPD-80 Series Installation And Operating Manual

SEDIMENT TRAPS

WARNING
Fire and Explosion Hazard
• Contaminants in gas lines can
cause fire or explosion.
• Clean all gas piping before
installation.
• Install sediment trap in accor-
dance with NFPA 54.
Contaminants in the gas lines may cause improper
operation of the gas control valve/thermostat that may
result in fire 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 (sometimes called a dirt leg) must be incorporated in
the piping. The sediment trap should be either a tee fitting
with a capped nipple in the bottom outlet or other device
recognized as an effective sediment trap. If a tee fitting is
used, it should be installed in conformance with one of the
methods of installation shown in Figure 17 & Figure 18.
Refer to the current edition of the "National Fuel Gas
Code", ANSI Z223.1/NFPA 54.
SHUT-OFF VALVE
HOT-WATER
OUTLET
UNION
SOME
COMPONENTS
NOT SHOWN
FOR CLARITY.
METAL
DRAIN
PAN
Figure 19.
100299634_2000545244_ Rev. A

FILLING THE WATER HEATER

•
Do not insert the power cord into the electrical
receptacle until the heater has been fully installed.
•
Never use this water heater unless it is completely full
of water. To prevent damage to the tank, the tank must
be filled with water. Water must flow from the hot-water
faucet before turning "ON" gas to the water heater.
To fill the water heater with water:
1. Close the water heater drain valve by turning handle
2. If the heater is equipped with plumbing side taps and
3. Open all hot-water faucets served by the water heater
4. Open the cold-water supply valve to the water heater.
•
COLD-
•
WATER
INLET
5. To ensure complete filling of the tank, allow air to exit
SIDE TAP
(OUTLET)
6. Check all water piping and connections for leaks.
TEMPERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE PIPE
(DO NOT CAP
OR PLUG)
SIDE TAP
(INLET)
DRAIN
VALVE
6 in. MAX. AIR
GAP BELOW
DISCHARGE PIPE
FLOOR
DRAIN
CAUTION
Property Damage Hazard
• Avoid water heater damage.
Fill tank with water before operating.
•
to the right (clockwise). The drain valve is on the lower
front of water heater (see Figure 19).
they are not connected to piping, ensure the side taps
have been closed with pipe plugs.
to allow air to escape from the tank and the water
piping. Ensure any shut-off valves between the heater
and the faucets are the open position.
Notes:
The cold-water supply valve must be left open when
the water heater is in use.
Avoid water leakage when filling the tank. Do not
allow the insulation of the water heater to get wet as
water can reduce the effectiveness of the insulation.
by opening nearest hot-water faucet. Allow water to
run until a constant flow is obtained. This will let air
out of the water heater and the piping.
Repair as needed.
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