Sediment Traps - Reliance Water Heaters FVIR C3 Instruction Manual

• A flexible gas connector or a ground joint union between the shut
off valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the water
heater. Use a soapy water solution, not a match or open flame. Rinse
off soapy solution and wipe dry.
When installed at elevations above 2,000 feet (610 meters), input rating
should be reduced at the rate of 4 percent for each 1,000 feet
(305 meters) above sea level which requires replacement of the
burner orifice in accordance with National Fuel Gas Code
ANSI Z223.1/NFPA 54. Contact your local gas supplier for further
information.
Failure to replace the standard orifice with a high altitude orifice when
installed could result in improper and inefficient operation of the
appliance, producing carbon monoxide gas in excess of safe limits,
which could result in serious injury or death. Contact your gas supplier
for any specific changes which may be required in your area.
Use pipe joint compound or teflon tape marked as being resistant to the
action of petroleum [Propane (L.P.)] gases.
The appliance and its gas connection must be leak tested before placing
the appliance in operation.
The appliance and its individual shutoff valve shall be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 pound per square inch
(3.5kPa). It shall be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure testing
of the gas supply piping system at test pressures equal to or less than
1/2 pound per square inch (3.5kPa).
Connecting the gas piping to the gas control valve of the water heater
can be accomplished by either of the two methods shown in Figures
28 and 29.

SEDIMENT TRAPS

A sediment trap shall be installed as close to the gas valve inlet of the
water heater as practical at the time of water heater installation. The
sediment trap shall 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 shall be installed in conformance with one of
the methods of installation shown below.
FIGURE 28. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 29. GAS PIPING WITH ALL
BLACK IRON PIPE TO GAS CONTROL.
Contaminants in the gas lines may cause improper operation of the gas
control valve 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 drip leg (sometimes called a
sediment trap) must be incorporated in the piping. The drip leg must be
readily accessible. Install in accordance with the "Gas Piping" section.
Refer to the current edition of
NFPA 54.
17
the National Fuel Gas Code, ANSI Z223.1/