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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX MERIT
®
SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • CARE AND OPERATION INSTRUCTIONS
Figure 5
Figure 6
Pull the actuator forward to open the combustion
air door, and push it back to close. To "lock" the
combustion air door closed, ensure the actuator
is pushed all the way back, then push the end
of the actuators to the right until the step in the
actuator moves behind the appliance front face
within the slotted opening.
MANUALLY-RESET BLOCKED FLUE SAFETY
SWITCH
This appliance is equipped with a manually-reset
blocked flue safety switch. Refer to Figure 7
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 opera-
tion 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 REMOVING
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 appli-
ance back on.
The appliance should then relight and remain
lit. If this does not occur, turn off the appliance
and call a qualified service technician.
The control lever snaps into place at either
extreme of its range of motion. When locked
in position all the way to the right, the damper
is open. When locked in position all the way
to the left, the damper is closed.
The damper lever actuates a switch, (see wiring
diagram) which will prevent the appliance main
burner from lighting unless the damper is locked
open. The appliance flue damper must always
remain open when operating.
Remove Locking Screw
and “Pop” Actuator to the
Left Before Initial Use
Combustion Air
Actuator
Pull Forward to Open,
Push Back to Close
Many appliances are equipped when installed
with an outside (make-up) air vent system
that is designed to provide the appliance with
outside make-up air for combustion when in
operation. The actuator for the outside air
system is standard on all appliances but must
not be operated if the complete system is not
installed. Refer to Figure 6. When the complete
outside air vent system is installed, the installer
will remove the actuator locking screw.
If your screw is not removed and you have
reason to believe that you have a complete
outside air system, contact your distributor to
have your appliance inspected for the presence
of the complete system.
DO NOT assume that you have this system
in place because you have an actuating lever
present on your appliance front face.
C
A
G
Inside Chase
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
Rough Framing Face (Unfinished Shown)
H
H
Optional FOAK
Combustion Air Kit
Limit Switch Screws
Manual
Reset
Limit
Switch
Screen
Rod
Lintel Extension Right Side Refractory Panel
Screen
To provide outside combustion air to your
appliance while it is in operation, locate the
combustion air actuator along the right side
of the appliance opening (Figure 5 ).
To operate, push the end of the actuator to the
left as shown in Figure 6, until it "pops" free of
its "locked" position.
WARNING: DAMPER MUST BE IN OPEN
POSITION WHEN APPLIANCE MAIN
BURNER IS OPERATING.
AVERTISSEMENT: LE REGISTRE DOIT
ÊTRE EN POSITION OUVERTE LORSQUE
LE OU LES BRULEURS PRINCIPAUX DE
L'APPEREIL FONCTIONNMENT.
WARNING: DO NOT OPERATE THE
COMBUSTION AIR ACTUATOR UNLESS
A COMPLETE OUTSIDE AIR VENT SYS-
TEM HAS BEEN INSTALLED WITH YOUR
APPLIANCE.
Figure 7