Maintenance Schedule - Lennox MPB35ST-NM Homeowner's Care And Operation Instructions Manual

2. Light appliance (follow lighting procedure on
lighting label in control compartment or see
homeowners manual).
3. Allow the burner to operate for at least 15 min-
utes while observing the fl ame continuously to
ensure that the proper fl ame appearance has
been achieved (see Figure 15). If the following
conditions are present, adjust accordingly.
• If flame appears weak or sooty, adjust the
air shutter, incrementally, to a more open
position until the proper fl ame appearance
is achieved.
• If fl ame stays lowered blue, adjust the air
shutter, incrementally, to a more closed
position until the proper fl ame appearance
is achieved.
4. Leave the control knob (off/pilot/on) in the ON position and the burner OFF/ON switch OFF (& remote switches, if applicable).
5. When satisfi ed that the burner fl ame appearance is normal, close the lower control compartment door.

MAINTENANCE SCHEDULE -

MAINTENANCE TASK
Inspecting/Cleaning Burner, Logs
and Controls
Check Flame Patterns and Flame
Height
Inspecting/Cleaning Pilot and Burner
Checking Vent System
Appliance Checkout
Replacing Rockwool Ember Materials
MAINTENANCE SCHEDULE -
MAINTENANCE TASK
Cleaning Firebox Interior
Check Flame Patterns and Flame
Height
Checking Vent System
Cleaning Front Glass Enclosure Panel
Main Burner Factory Air Shutter
Opening Setting - All Models
Model
MPB35ST
Figure 16
Annually (Before the onset of the Burning Season)
ACCOMPLISHING PERSON
Qualifi ed Service Technician
Qualifi ed Service Technician
Qualifi ed Service Technician
Qualifi ed Service Technician
Qualifi ed Service Technician
Homeowner/Qualifi ed Service
Technician
Periodically (After the Burning Season)
ACCOMPLISHING PERSON
Homeowner
Homeowner
Homeowner
Homeowner
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Natural Propane
Gas Gas
1/8" 1/4"
3.2mm 6.4mm
Adjustment Rod Positions
(when viewed from above)
Inspect valve and ensure it is properly operating. Check piping
for leaks. Vacuum the control compartment, fi replace logs and
burner area.
Refer to Figure 15 on Page 13 and verify the fl ame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs. Ensure fl ames are steady
(not lifting or fl oating).
Refer to Figure 17 and Figure 18 on Page 14. Remove any
surface build-up on pilot and burner assembly. Wipe the pilot
nozzles, igniter/fl ame rod and hood. Ensure the pilot fl ame
engulfs the fl ame sensor as shown.
Inspect the vent system at the top and at the base (within the
fi rebox) for signs of blockage or obstruction. Look for any signs
of dislocation or deterioration of the vent components. Note:
Inspect wall straps or plumbers's tape to ensure it is secure
and in place.
Perform the appropriate appliance checkout procedure detailed
in this manual.
Remove old ember materials (rockwool) and vacuum the ember
placement area. Place new embers as described in Step 6 on
Page 11.
Carefully remove logs, embers (rockwool), and vermiculite.
Vacuum out interior of the fi rebox. Clean fi rebox walls and
log grate. Replace logs, embers (rockwool) and vermiculite as
detailed in this manual (see Pagexs 8-10 ).
Refer to Figurex 15 on Pagex 10 and verify the fl ame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs.
Inspect the vent system at the top and at the base (within the
fi rebox) for signs of blockage or obstruction. Look for any signs
of dislocation of the vent components.
Clean as necessary following the directions provided in this
manual. DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS
WHILE HOT.
Decrease Shutter Opening
Note - Burners are
In This Direction
view for clarity.
Orifi ce
Air Shutter
Increase Shutter Opening
Adjusting
In This Direction
Rod
PROCEDURE
PROCEDURE
omitted in this
11