Lennox Hearth LBV-3824EN Indoor Fireplace User Manual


 
5
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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 shut-off lever for the outside
air system is standard on all appliances but
should not be operated if the complete system
is not installed. Refer to
Figure 5
. When the
complete outside air vent system is installed,
the installer will remove the cover from the
shut-off lever located in the left side of the
firebox opening.
If your cover 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 pres-
ence of the complete system. DO NOT assume
that you have this system in place.
The hand operated shut-off lever is located in the
left side of the fireplace opening behind the
screen. To open, pull all the way. The outside air
damper should be fully open when the fireplace
is in use and completely closed when the fire-
place is not being used. This will prevent outside
cold air from entering the dwelling.
Burner Adjustments
Flame Appearance and Sooting
Proper flame appearance is a matter of taste.
Generally most people prefer the warm glow of
a yellow to orange flame. Appliances operated
with air shutter openings that are too large, or
with long vertical vent runs, will exhibit flames
that are blue and transparent. These weak, blue
and transparent flames are termed anemic.
If the air shutter opening is too small sooting
may develop. Sooting is indicated by black
puffs developing at the tips of very long orange
flames. Sooting results in black deposits form-
ing on the logs, appliance inside surfaces and
on exterior surfaces adjacent to the vent termi-
nation. Sooting is caused by incomplete com-
bustion in the flames and a lack of combustion
air entering the air shutter opening.
To achieve a warm yellow to orange flame with
an orange body that does not soot, the shutter
opening must be adjusted between these two
extremes.
No smoke or soot should be present. Reposi-
tion the log set if the flames impinge on any of
them.
If sooting conditions exist, the air shutter
opening on the main burner can be adjusted.
Normally, the more offsets in the vent system,
the greater the need for the air shutter to be
opened further.
MANUALLY-RESET BLOCKED FLUE SAFETY
SWITCH
This appliance is equipped with a manually-
reset blocked flue safety switch. Refer to
Figure 6
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.
This reset button is located on the back of the
limit switch, between the wire terminals (
see
Detail A of Figure 21
).
The appliance should then relight and remain
lit. If this does not occur, turn off the appli-
ance and call a qualified service technician.
Maintenance
The appliance and venting system should be
thoroughly inspected before initial use and at
least annually by a qualified service techni-
cian. Proper maintenance and use will require
more frequent, less extensive inspections and
servicing by the homeowner.
Generally, annual inspections should be per-
formed by a qualified service technician. More
frequent periodic inspections and cleanings
should be performed by the homeowner. Any
discrepancies discovered by the homeowner
should result in a call to a qualified service
technician to effect the repair or correction.
Refer to the maintenance schedule for mainte-
nance tasks, procedures, periodicity and by
whom they should be performed.
IMPORTANT: TURN OFF GAS AND ANY ELEC-
TRICAL POWER BEFORE SERVICING THE
APPLIANCE.
Figure 6
Manual Reset
Limit Switch
Lintel
Extension
Right Side
Refractory Panel
Reset
Button
Wire
Terminals
Detail A
WARNING: DO NOT OPERATE THE
SHUTOFF LEVER UNLESS A COMPLETE
OUTSIDE AIR VENT SYSTEM HAS BEEN
INSTALLED WITH YOUR APPLIANCE.
WARNING: AIR SHUTTER ADJUSTMENT
SHOULD ONLY BE PERFORMED BY A
QUALIFIED PROFESSIONAL SERVICE
TECHNICIAN.