11
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • CRESTLINE™ SERIES B-VENT GAS FIREPLACES • 36"/42" LSBV MODELS • INSTALLATION INSTRUCTIONS
Figure 16
Step 6. Connecting Gas Line
– Make gas line
connections. All codes require a shut-off valve
mounted in the supply line.
Figure 17
illustrates
the method for connecting the gas supply.
The flex-line method utilizing the gas flex line
provided with the appliance is acceptable in
the U.S., however, Canadian requirements vary
depending on locality. Installation must be in
compliance with local codes.
The gas control valve is located in the lower
control compartment. To access the valve
remove the refractory access panel and set
aside
(
Figure 16
)
.
The control valve has a
3/8" (10 mm) NPT thread inlet port.
Secure all joints tightly using appropriate
tools and sealing compounds (ensure propane
resistant compounds are used in propane
applications).
Refractory
Access Panel
SIT Valve
Shown
Turn on gas supply and test for gas leaks, us-
ing a gas leak test solution (also referred to as
bubble leak solution).
Note:
Using a soapy water solution (50%
dish soap, 50% water) is an effective leak test
solution but it is not recommended, because
the soap residue that is left on the pipes/fittings
can result in corrosion over time.
Never use
an open flame to check for leaks.
WARNING
Never use an open flame to
check for leaks.
TEST ALL CONNECTIONS FOR GAS LEAKS
(FACTORY AND FIELD):
Note: The gas supply line
must be installed in accor-
dance with building codes
by a qualified installer
approved and/or licensed
as required by the locality.
In the Commonwealth of
Massachusetts, installation
must be performed by a
licensed plumber or gas
fitter.
Gas
Valve
3/8" NPT x
Flare Fitting
3/8" Flex Tubing
3/8" Nipple
3/8" Union
3/8" Close
Nipple
3/8" Shut-off Valve
1/2" x 3/8"
Reducer
Gas
Stub
1/2" x 3/8" Flare
Shut-off Valve
Gas Solid Line Connector
Gas Flex Line Connector
*Sediment
Trap
3"
Min
Figure 17 -
GAS CONNECTION
A.
Light the appliance (refer to the lighting
instructions label in the control compartment
or in the Homeowner's Care and Operation
Instructions).
B.
Brush all joints and connections with the
gas leak test solution to check for leaks. If
bubbles are formed, or gas odor is detected,
turn the gas control knob to the “OFF” posi-
tion. Either tighten or refasten the leaking
connection and retest as described above.
C.
When the gas lines are tested and leak free,
be sure to rinse off the leak testing solution.
D.
When the gas lines are tested and leak free,
observe the individual tongues of flame on
the burner. Make sure all ports are open and
producing flame evenly across the burner. If
any ports are blocked, or partially blocked,
clean out the ports.
