Avalon Firestyles 900 PI-1993 to 1996 - Manual (Page 38)

P AGE 38
M
AINTAINING
Y
OUR
H
EATER
(C
ONTINUED
)
Exhaust Blower
The exhaust blower pulls the combustion air through the heater and pushes the flue gases out the
pellet vent. It collects soot and must be cleaned every 3 tons of fuel burned. Follow the
directions in "ACCESSING INTERNAL COMPONENTS" for accessing the right side. For
stoves, remove the pellet vent connection at the back of the stove (make sure to re-seal with RTV
500
o F. silicone).
Make sure the heater is unplugged, then disconnect the two power leads going to the exhaust
blower. The orientation of these two wires does not matter when re-attaching them. Use a 3/8"
nut driver to remove the four mounting nuts that hold the exhaust blower in place. Three of the
nuts are located on top of the exhaust blower while one is on the lower left and can only be
accessed through a hole in the base. Remove the insulation surrounding the exhaust blower. Tilt
the exhaust blower outwards and slide towards the side to remove. With the exhaust blower
removed, check the gasketing that insulates the connection between the exhaust blower and the
exhaust housing. Replace the gasket if it has deteriorated. Follow the directions in reverse order
to re-attach the exhaust blower. Make sure to re-seal the pellet vent connections with RTV 500
o
F. silicone.
Exhaust Blower
Mounting Nuts
Exhaust Blower
(Lined with
Insulation)
Power Leads to
Exhaust Blower
Exhaust
Housing
Once the exhaust blower is removed, place it so the side that holds the gasket is up. Check the
impeller blades for any damage and replace if necessary. Clean the inside of the blower, making
sure to get the soot up inside the blower. Check the silicone seal where the blower connects to
the exhaust tube. Use RTV 500
o F. silicone to reseal the joint. Use a new exhaust gasket if the
existing one is torn or significantly worn.
Clean the
inside of the
exhaust
housing
Make sure the flow switch
nipple is not clogged
(check both ends)
Check
Silicone
Seal
Exhaust Tube
Insulation
Clean up
inside the
blower