CLEAN THE VERTICAL EXHAUST DUCT
If the PRPP40 or the brick kit NP841KT is in place, remove that accessory fi rst.
1.Open side door, release the latch and pivot the viewing door wide open. See Figure 35 and 36.
2.Remove the one screw on each exhaust port located on either side of the fi re box. Remove the exhaust port doors and set aside on a
Insert a vacuum into the exhaust port holes and remove as much fl y ash as possible from behind the left and right exhaust manifolds. Once clean, replace the exhaust port doors and secure with the screws.
31
Figure 45
CLEAN EXHAUST HOUSING (INSERT ONLY)
To clean the exhaust blower and exhaust housing, the heater must be pulled out from the fireplace cavity. Remove the vent- ing from the exhaust collar. If installed as a top vent, remove cover plate from the rear of the housing. If installed as a rear vent, remove the cover plate from the top of the housing. Vacuum out the housing back to blower outlet. See Figure 47.
CLEAN THE EXHAUST BLOWER
NOTE: Do not attempt this maintenance without a replacement exhaust blower motor mounting gasket.
1.Remove the six nuts holding the exhaust blower motor in place.
2. Pull the motor out being careful not to damage the wiring, unplug the two wires that are connecting the motor and gently set aside. (The pieces of gasket may be discarded.
3.Start by cleaning the exhaust tube by feeding a brush or rag through the inside of the tube and out the exhaust blower housing.
4.Vacuum out the exhaust ports and the blower housing.
5.With a bristle brush vacuum, clean the blades of the motor.
6.Place the new exhaust blower mounting gasket around the screw holes being very careful not to tear it.
7.
Nuts
Figure 46
Figure 47