W415-1013 / C / 11.19.13
14
EN
4.7 SECONDARY AIR TUBES
STEP #1
○
Insert the next tube in the rear most hole in the left side manifold, as illustrated in “A”.
○
Slide the tube towards the right side of
fi
rebox, into the opposit hole, as illustrated in “B”.
Main air control
box is secured
with (3) screws
into the rear
panel and (1)
through the
inside
fl
ange of
the main box
and into the
furnace top.
The rear most secondary air tubes have been factory installed. The remaining three secondary air tubes in
conjunction with the compressed vermiculite baf
fl
es will need to be installed as follows:
NOTE
The holes in
the tubes must
face to front of
furnace.
2. Assemble the control box as illustrated using the fasteners supplied.
3. Check manual override operation of the shutter plate by sliding the primary damper lever up and down
at the front of the Top Damper Bracket. Again the shutter shall move up and down freely and the shutter
should readily return to the closed position under gravity.
4. Connect electrical control circuit and ensure shutter moves freely (open and close) when the wood thermo-
stat cycles on and off for heat demand.
"B"
"A"
NOTE
The keyway in the secondary tube must align with the keyed part of the acceptance hole in the right hand
side secondary manifold.
NOTE
The front 3 secondary tubes on the HMF200 have larger holes than the rear 2.
