Lennox Hearth LMBV-42REN Indoor Fireplace User Manual


 
9
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Replace logs if removed for pilot inspection.
To light the burner; turn “ON” the remote wall
switch and rotate the gas valve control knob
counterclockwise to the “ON” position (“ON”
will be to the left hand side of the valve).
Electronic Appliance Checkout
To light the burner, turn ‘ON’ the optional
remote wall switch and turn the gas control
switch to the “ON” position. Ensure the ignitor
lights the pilot. The pilot flame should engulf
the flame rod as shown in
Figure 20.
Figure 19
³⁄₈" Min
(9 mm)
Hood
Pilot
Nozzels
Ignitor Rod
MANUALLY-RESET BLOCKED FLUE SAFETY
SWITCH
This appliance is equipped with a manually-
reset blocked flue safety switch. Refer to
Figure 18
for its location. If during appliance
operation, the flame goes out (independently
of the burner on/off wall switch), it may be due
to the operation of this safety limit switch.
First allow the appliance to cool. Then reset
the safety switch by pushing the red reset
button on the back of the switch.
CAUTION: THE ELECTRONIC APPLIANCE
SHOULD BE TURNED OFF BEFORE REMOV-
ING THE LIMIT SWITCH.
To access the safety limit switch reset button,
remove the screen rod and screen from the
right side of the fireplace. Unscrew two screws
and remove the limit switch with low voltage
wires attached. Push the reset button, then
reinstall the limit switch. Reinstall the screen
and rod. At this time turn the electronic
appliance back on.
The appliance should then relight and remain
lit. If this does not occur, turn off the appli-
ance and call a qualified service technician.
Millivolt Appliance Checkout
The pilot flame should be steady, not lifting or
floating. Flame should be blue in color with
traces of orange at the outer edge.
Figure 18
Limit Switch Screws
Manual
Reset
Limit
Switch
Screen
Rod
Lintel Extension Right Side Refractory Panel
Screen
The top ³⁄₈" (9 mm) at the pilot generator (ther-
mopile) should be engulfed in the pilot flame.
The flame should project 1" (25 mm) beyond
the hood at all three ports
(Figure 19 )
.
Figure 17
Operate the actuator through several cycles
including the "lock" position. Ensuring proper
operation and freedom of movement. Return
the actuator arm to the locked position.
Step 8. Installing Logs and Rockwool – The
logs are packaged and boxed within the firebox.
The bag of rockwool is in the lower control
compartment. Remove the rockwool from the
packaging and tear into quarter size pieces (see
Homeowners Care and Operation Instructions).
Carefully position the ceramic fiber log assem-
bly onto the burner, refer to the Homeowners
Care and Operation Instructions for detailed
log description and placement instructions.
Position the logs onto the pins of the burner,
with the cutouts fitted around the burner tube.
Ensure the rear log matches the cutout on its
bottom with the position of the pilot.
APPLIANCE OPERATION
Step 9. Checking the System – With the gas
line installed, run initial system checkout
before closing up the front of the unit. Follow
the pilot lighting instructions provided in the
Homeowner's Care and Operation Instruc-
tions. The piezo ignitor is located in the
control compartment (see
Figure 13
).
Note: Instructions are also found on the pull
out labels attached to the gas control valve.
The valve is shown in Figure 17.
When first lighting the appliance, it will take a
few minutes for the line to purge itself of air.
Once purging is complete, the pilot and burner
will light and operate as indicated in the in-
struction manual.
Subsequent lightings of the appliance will
not require such purging. Inspect the pilot
flame (remove logs, if necessary, handling
carefully).
SIT Valve