11
FIREBOX BRICK REPLACEMENT
This furnace comes from the factory with the firebrick installed. How
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ever, if brick replacement is necessary, follow these instructions. Be
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fore furnace operation, remove the brick retaining strip. This piece is
used during shipping to reduce brick damage.
For model AAF747, there are 6 full brick and 1 half brick per side.
Install the half brick first by putting the bottom of the brick in first
and let it rest against the firebox side and fire grates. Then slide it to
the rear. After that, install the #2, #3, #4, #5 & #6 brick, sliding the
6th brick forward to allow for the 7th brick. Repeat for opposite side.
NOTE: Prior to operation, be sure to remove the brick retaining
strips.
FORCED DRAFT BLOWER - 69189
Using two 1/4-20 x 1” bolts and nuts, attach the draft blower adapter
to the draft tube on the front of the furnace. Then mount and secure
the draft blower to the adapter with the three 10-24 Kep nuts. Plug the
blower into the outlet on the front of the furnace.
(1) Draft Blower
(1) Draft Blower Adapter
(2) 1/4-20 x 1 Hex Bolt
(2) 1/4-20 Lock Nut
(3) 10-24 Kep Nut
FIREBRICK AND BAFFLE REPLACEMENT
BAFFLE/BRICK REPLACEMENT
If baffle replacement is necessary, slide the baffle out until you can ac
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cess the nuts thru the flue outlet. Once the nuts have been removed,
slide the baffle off the rod and thru the opening in the firebrick. You
may have to remove one of the firebrick to make baffle removal easier.
For model AAF747, there are 4 full brick and 1 half brick in the top of
the furnace. Install the brick by inserting one end of the brick angled
upward and then allowing the opposite end to rest on the firebox lip.
Lay the brick between the spacer and firebox back. Slide the baffle to
the rear and let it rest on that half brick. After installing brick #2 in
the front, install #3 and slide it under the baffle. Finally install bricks
#4 and #5.
Summary of Contents for SF747
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