Owner`s manual

2. The grill adapter is designed to be installed under-
neath the gypsum board in the wall. Frame a 13" x
13" hole to accept the gravity vent grill adapter in the
desired location. Fit the gravity vent grill adapter into
the framed hole and fasten it into place with nails or
screws. If you are installing the outlet in an already
finished area, you must remove the gypsum board
and frame a 13" x 13" hole in the existing framing, in
order to meet the required clearances.
3. Remove the outer cover to the left, right, or both sides
of the flue outlet, on the Opel AP.
4. Cut the insulation to the size of the opening and
remove the cover plate underneath (it is taped in
place).
5. Install the B-vent starter section. The slot in the B-vent
starter section should be facing the front and the hole
should be facing the back. Bend up the four tabs at
the base of the starter section to hold it in place.
6. Install the shut-off damper at the base of the starter
section. The shut-off damper enables the manual
control of hot air flowing through the gravity vent pipe.
With the top louver removed, and the angular portion
of the rod in hand, insert the damper rod into the hole
in the starter section. Next, make sure that the wash-
er and spring on the control arm are both on the out-
side of the starter section and that the rod has fit
snugly into the slot. A definite tension should exist
between the shut-off damper rod and the starter sec-
tion. Replace the louvers. The damper rod should
protrude above the top of the louvers.
WARNING: If you are blocking off the upper louvers
of the Opel AP, do not install the shut-off dampers.
7. Install the B-vent pipe between the B-vent starter and
the grill adapter. Fasten each joint with 3 screws (if
the B-vent pipe manufacturer allows this in its instruc-
tion manual). Insert the B-vent pipe in the grill adapter
and fasten it with three screws. The B-vent pipe
needs only to be inserted into the adapter enough to
be able to screw it in place. This allows you about 3
1/2" of play.
8. Once the wall facing around the gravity vent grill
adapter has been completed, install the grill with the
supplied screws. The gravity vent is now ready for
operation.
THE CENTRAL HEAT SYSTEM
Required components:
1) Part FDHC6 : A blower control center, a thermostat
and a thermal switch.
2) Part FDHC6-1: A back draft damper
3) Part FDHB6 : A maximum 636 C.F.M. blower with a
variable speed motor, 2 noise reduc-
tion collars, a blower speed control,
and a mounting bracket.
NOTE: Parts 2 and 3 must be used together for this sys-
tem. Use of any substitutes will de-certify the system.
Page 22
OPEL AP
Stones, tile or brick
Optional masonry
retainer kit
Mortar
Hearth
Wire mesh
Plywood or
gypsum board
Figure 20: Facing with masonry
-no ducting
-top grill open
-1 gravity vent kit
-top grill open
-central heating
duct kit
-top grill open
-2 gravity vent kits
-top grill closed
-central heating
duct kit
-1 gravity vent kit
-top grill open
-2 gravity vent kits
-top grill open
Figure 21: Remote venting options for the Opel AP