RSF Woodburning Fireplaces OPEL AP Owner's Manual page 23

OPEL AP
Grill
adapter
Grill
Figure 22: Gravity vent kit (FDV)
The 8" back-draft damper prevents hot air from travelling
into the C vent (single wall) ducting unless the Central Heat
Blower (FDHB6) is operating. When the thermostat calls for
heat, the blower turns on and opens the one-way valve. At
the same time, the room air is drawn through the upper and
lower louvers, which mixes and reduces the overall tem-
perature of the forced air that travels through the ducting.
WARNING: If the back-draft damper is not installed,
the central heat ducting may become too hot for the
surrounding combustible materials. Any substitute for
the FDHC6-1 kit will void all warranty coverage by RSF
Woodburning Fireplaces.
Installation
1. Remove the cover left side only.
2. Cut the insulation to the size of the opening and remove
the cover plate underneath (it is taped in place).
3. Install the back draft damper crimped side up, making
sure it is pushed all the way down. Bend out the 4 mid-
dle tabs to fasten the damper to the top of the fireplace.
4" min.
2" min.
Figure 23: Gravity vent clearances
B-vent
starter
2" min.
"B" vent
starter(s) here
Front view
From the louver opening bend out two of the lower tabs
to prevent the damper from being pulled out.
4. Before proceeding with the installation of the blower,
make sure that the electrical service to the blower is in
the OFF position. All wiring should be in accordance
with local ordinances and the National Electric Code.
NOTE: The blower can basically be installed anywhere in
the home, however some thought should go into the plan-
ning to ensure that the blower noise does not affect rooms
you would like kept quiet. If the central heating system
ductwork is passing through an area in your home that you
do not wish to be heated, then the ducting should be insu-
lated. Length of runs should be as short as possible to con-
serve space and minimize cost. Maximum duct length
should not exceed 50 feet from the fireplace to the furthest
outlet. There is a loss of about 15% performance at 50 feet.
NOTE: The blower automatically shuts off if the air tem-
perature reaches 180° F inside the ducting.
5. Locate the blower in a convenient location. The blow-
er may be installed vertically or horizontally. The hor-
izontal installation can utilize either the supplied
mounting bracket or, if you want to install the blower
farther away from the ceiling, you can use plumber's
strapping. A vertical installation must include the
mounting bracket.
NOTE: If you have an existing hot air system, you may
Grill and adaptater
Optional gravity
vent outlet
4" min.
2"
min.
Side view
Page 23
safely 'tie in' to this hot air sys-
tem. However, no hot air duct is
to be connected to the return air
of another central heating sys-
tem.
6. Connect the INLET of the
blower to the ducting coming
from the fireplace, using 8"
diameter metal ducting (rigid or
flex). Any other size will not
work properly. Use only metal
ducting between the fireplace
and the blower. You may use
plastic ducting after the blower,
provided the temperature rating
of the ducting is at least 250° F.
Do not use plastic ducting in a
chase.
NOTE: The central heat ducting
may be run at a 0" clearance to
combustibles.