Slant/Fin VSL-160C Part B - Manual (Page 22)

58
11.1 - Gas supply
piping
WARNING!!!
Check that
the type and the pressure of the
gas supplied correspond with
those required for the boiler
as stated on the rating plate.
Never use a gas different than
that stated on the boiler rating
plate. Failure to comply with
this warning can result in a fi re
or explosion causing extensive
property damage, severe
personal injury or death!
Connecting gas supply piping:
1. Refere to Figure 11-1 to pipe gas to
the boiler.
a. Install ground joint union for
servicing, when required.
b. Install a manual shutoff valve in
the gas supply piping, outside
boiler jacket
c. Manual main shutoff valves, must
be identifi ed by the installer.
2. Install sediment trap / drip leg. (see
Figure 11-1).
3. Support piping with hangers, not by
the boiler or its accessories.
WARNING!!!
Do not
attempt to support the weight of
the piping with the boiler or its
accessories. Failure to comply
could result in severe personal
injury, death, or substantial
property damage.
4. Purge all air from the gas supply
piping.
5. Before placing the boiler in
operation, check the boiler and its
gas connection for leaks.
a. The appliance must be
disconnected from the gas
supply piping system during any
pressure testing of that system at
a test pressure in excess of 1/2
PSIG (3.5 kPa).
b. The appliance must be isolated
from the gas supply piping
system by closing a manual
shutoff valve during any pressure
testing of the gas supply piping
system at test pressures equal to
or less than 1/2 PSIG (3.5 kPa).
c. The appliance and its gas
connection must be leak tested
before placing it in operation.
WARNING!!!
Never use
an open fl ame to test for gas
leaks. Always use an approved
leak detection method. Failure
to comply with this WARNING
could result in an explosion!
6. Use pipe sealing compound
compatible with propane gas. Apply
sparingly only to male threads of the
pipe joints so that pipe dope does
not block gas fl ow.
WARNING!!!
Failure to
apply pipe sealing compound
can result in severe personal
injury, death, or substantial
property damage.
WARNING!!!
This boiler is
typically shipped ready to fi re
on natural gas. Check boiler
rating plate to determine which
fuel the boiler is set for. If set to
natural gas, it may be converted
to LP following instruction on
Section 11.6. Failure to comply
could result in severe personal
injury, death, or substantial
property damage.
Figure 11-1 Gas supply
piping
INSTAL MANUAL SHUT-OFF
VALVE 5 FT (1.5m) ABOVE
FLOOR WHERE REQUIRED BY
LOCAL CODES
GROUND JOINT UNION
TO BOILER
SEDIMENT TRAP OR DRIP LEG
11 - INSTALLATION - Gas supply
11-1 11-2