Lochinvar LTL07575, Инструкция по эксплуатации

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FIGURE 18. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 19. GAS PIPING WITH BLACK IRON PIPE
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 sediment trap
must be incorporated in the piping. The sediment trap
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
. Short
repeated heating cycles caused by small hot water
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum [Propane (L.P.)]
gases.
The water heater and its gas connection must be leak
tested before placing the water heater in operation.
The water heater and its individual shut-off 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 (3.5 kPa). It shall
be isolated from the gas supply piping system by closing
its individual manual shut-off 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 (3.5
kPa).
Connecting the gas piping to the gas control valve of the
water heater can be accomplished by either of the two
methods shown in
Figure 18
and
Figure 19
.
SEDIMENT TRAPS
A sediment trap shall be installed as close to the 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 in
Figure 18
and
Figure 19
.