Lennox Hearth Winslow PI40 - Manual (Page 21)

1
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 36A
B
C
Cleaning the Combustion Blower
To clean the combustion blower, unplug the insert from the power source
and remove the six nuts labeled A in Figure 37 with an 11/32” wrench.
After removing these nuts, the motor with fan attached can be pulled
from the fan housing. The fan blades and the fan housing can be vacu-
umed once the motor is removed. When reinstalling the motor, a new
gasket may need to be installed between the motor and the fan housing.
To complete the reinstallation, place the motor back on the fan housing
and reinstall the six nuts. Make sure the motor’s green ground wire is
secured under one of the nuts.
Cleaning the Vent Pipe
Soot and Flyash: Formation and Need for Removal
The products of combustion will contain small particles of flyash. The
flyash will collect in the exhaust venting system and restrict the flow of
the flue gases. Incomplete combustion, such as occurs during start-up,
shutdown, or incorrect operation of the room heater will lead to some
soot formation which will collect in the exhaust venting system. The
exhaust venting system should be inspected at least once every year to
determine if cleaning is necessary. Sweep the pipe as needed.
The insert has a clean-out box to which the flue pipe or flex pipe is at-
tached. To access the clean-out box, remove the right side surround panel
and right door. Figure 37 shows the box in the upright position attached
to the flue fan. Figure 38 shows the box from the bottom, revealing the
latch securing the box door. Pull the latch down to open the box. When
the ash is cold, use a vacuum cleaner to remove the ash from the box.
Refasten the box door by rotating the latch handle up.
Figure 36C
Side
Door
B = Upper Flue Passageway
C = Lower Flue Passageway
Left Side View
Right Side View
B
B
C
C
Figure 36B
Flue Passageways Cleaning Procedure
1. Open both the right and left side door to locate side flue passageways
(see Figure 36A).
2. There is one upper and one lower, 1” x 2”, flue passageways on both
the left and right sides (see Figures 36A, 36B and 36C).
3. Using a 5/32” allen remove allen head screws on each cover to access
the flue passage way cavities.
4. Using an ash vac, clean out both flue passageways on both the left and
right side of the insert starting at the top then going to the lower.
5. Once the flue passageways are clear of ash build-up, reinstall the four
cover plates.