Step 4. Field Wiring; Step 5. Connecting Gas Line - Lennox Hearth Products Spectra LSS-35CN Installation Instructions Manual

Step 4. FIELD WIRING

Note: This appliance must be connected to the
main power supply.
The junction box assembly is located inside the
control compartment close to the front right
side corner (see Figure 39 ). This junction
box contains a standard electrical junction box,
pre-wired duplex receptacle, a cover plate and a
conduit fitting (clamp connector). If desired, the
whole junction box assembly may be moved to
the left hand side of the control compartment.
A knock-out is provided on the cabinet wrapper
for positioning.
1. Route a 3-wire 120Vac 60Hz 1ph power
supply to the appliance.
2. Remove the metal cover plate and the duplex
receptacle from the junction box assembly (un-
plug fan control power cord from receptacle).
3. From the outside of the fireplace, loosen
clamp screws on the conduit fitting. Run power
supply wires (including the ground supply wire)
through conduit fitting. Tighten mounting nut
of conduit fitting.
4. Connect the power supply wires to the duplex
receptacle as shown in Figure 40.
5. Reassemble duplex receptacle and cover
plate on junction box. Tighten conduit fitting
clamp screws to secure supply wires.
6. Insert the fan control power cord into the
duplex receptacle.
WARNING
This appliance is equipped with
a three-prong (grounding) plug
for your protection against shock
hazard and should be plugged
directly into a properly grounded
three-pronged receptacle. Do
not cut or remove the grounding
prong from this plug.

Step 5. CONNECTING GAS LINE

Make gas line connections. All codes require a
shut-off valve mounted in the supply line. Figure
41 illustrates two methods for connecting the
gas supply. The flex-line method is acceptable
in the U.S., however, Canadian requirements
vary depending on locality. Installation must
be in compliance with local codes.
Figure 39
FAN CONTROL MODULE
Fan Aux
120V
Out
Out
JUNCTION
BOX
BK W G
FACTORY WIRED
Figure 40
FIELD WIRED
These appliances are equipped with a gas flex
line for use (where permitted) in connecting the
unit to the gas line. A gas flex line is provided
to aid in attaching the direct vent appliance to
the gas supply. The gas flex line can only be
used where local codes permit.
Gas
Valve
" Nipple
3/8
" Union
3/8
" Close Nipple
3/8
Figure 41-
GAS CONNECTION
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
See Figure 41 for flex line description. The flex
line is rated for both natural and propane gas. A
manual shut off valve is also provided with the
flex line. The gas control valve is located in the
lower control compartment (refer to Figure 48
on page 27 ). The RF control millivolt valve has
a 1/2" (13 mm) NPT thread inlet port.
Secure all joints tightly using appropriate
tools and sealing compounds (ensure propane
resistant compounds are used in propane
applications).
Junction Box
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
Power
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.
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" position. 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.
Gas Flex Line Connector
" NPT x "
3/8 3/8
Flare Fitting
" Flex Tubing
3/8
" Shut-Off Valve
3/8
" x " Flare
1/2 3/8
Shut-Off Valve
Gas
Stub
"
1/2 x 3/8
Reducer
23