100299634_2000545244_ Rev. A
23
SEDIMENT TRAPS
•
Contaminants in gas lines can
cause fire or explosion.
•
Clean all gas piping before
installation.
•
Install sediment trap in accor-
dance with NFPA 54.
Fire and Explosion Hazard
WARNING
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
.
HOT-WATER
OUTLET
COLD-
WATER
INLET
UNION
TEMPERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE PIPE
(DO NOT CAP
OR PLUG)
6 in. MAX. AIR
GAP BELOW
DISCHARGE PIPE
METAL
DRAIN
PAN
FLOOR
DRAIN
DRAIN
VALVE
SHUT-OFF VALVE
SOME
COMPONENTS
NOT SHOWN
FOR CLARITY.
SIDE TAP
(OUTLET)
SIDE TAP
(INLET)
Figure 19.
FILLING THE WATER HEATER
•
Avoid water heater damage.
•
Fill tank with water before operating.
Property Damage Hazard
CAUTION
•
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
to the right (clockwise). The drain valve is on the lower
front of water heater (see Figure 19).
2. If the heater is equipped with plumbing side taps and
they are not connected to piping, ensure the side taps
have been closed with pipe plugs.
3. Open all hot-water faucets served by the water heater
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.
4. Open the cold-water supply valve to the water heater.
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.
5. To ensure complete filling of the tank, allow air to exit
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.
6. Check all water piping and connections for leaks.
Repair as needed.
