Napoleon Auburn NPS40 Installation And Operating Instruction page 25

WARNING:
Disconnect the power cord prior to conducting service.
The following section details extensive maintenance procedures. We strongly suggest these items be carried
out by a trained service technician, possibly by a service agreement set up with your dealer.
SOOT AND FLYASH FORMATION
The products of combustion will contain small par-
ticles of fl y ash. The fl y ash will collect in the exhaust
venting system and restrict the fl ow of the fl ue gases.
Incomplete combustion occurs during startup, shut-
down, or incorrect operation of the room heater will
lead to some soot formation which will collect in the
exhaust venting system. The exhaust venting sys-
tem should be inspected at least once every year to
determine if cleaning is necessary.
Note: More frequent cleaning may be required de-
pending on pellet quality.
CLEAN THE VERTICAL EXHAUST DUCT
If the PRP40 or the brick kit GD832KT is in place,
remove that accessory fi rst.
1. Open side door, release the latch and pivot the
viewing door wide open. See Figure 20 and 22.
2. Remove the four screws that are holding the left
side panel onto the heater and set aside on a fl at
surface.
3. Remove the three screws on each exhaust
manifold. One screw located in the fi re box, the
other two screws are loacated under the bushings
on the left side and under the latches on the right
side of the heater.
ANNUALLY (
OR EVERY TWO TONS
Figure 31
)
Remove the manifold and set aside on a non-com-
bustible surface.
Using the cleaning tool, scrape out as much fl y ash
as possible from behind the left and right exhaust
manifolds. Once clean, replace the exhaust mani-
folds and secure with the screws.
25
Figure 32
Figure 33
W415-0587