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Innovative Hearth Products
BRT40ST See-Through B-Vent Gas Fireplaces
Step 6. OUTSIDE AIR KITS
Optional outside make-up air kits, Model FOAK-4
or FAOK-4LD, may be used with these appli-
ances. Refer to the installation instructions
packaged with the air kits for specific installation
information. If used, the outside air kit must
be installed before the fireplace is framed and
enclosed in the finished wall.
Outside air drawn into the fireplace supplies air
to the fire for combustion. Only one outside air
duct is necessary, if installed. See the Figure 11
for the location of the units outside air inlet.
If additional length of duct is necessary, pur-
chase locally available U.L. Class 0 or Class 1
metallic ducting. The duct may extend up to 50'
(15.24 m) in any direction.
NOTE: When installing the air duct vertically,
DO NOT terminate the duct closer than 3' below
the chimney top.
Outside combustion air ducting may be run
upwards or vertically through framing and ceil-
ing joists, with the hood installed through an
outside wall and 3' (1 m) below the termination.
Ducting may also be run downward through
floor Joists and under the home to a ventilated
crawlspace not considered part of the living
area of the home.
16
NOTE: Do not terminate outside air kit in attic
space under any circumstances.
CAUTION: NEVER LOCATE INLET WHERE IT
CAN BE BLOCKED BY SHRUBS, SNOW DRIFTS,
ETC. NEVER LOCATE INLET IN GARAGE OR
ANY AREA WHERE THERE IS ANOTHER FUEL
BURNING APPLIANCE OR PRODUCTS EMIT-
TING COMBUSTIBLE GASES SUCH AS PAINT,
GASOLINE, ETC. IN COLD CLIMATES, IT IS
RECOMMENDED THE COMBUSTION AIR DUCT
BE INSULATED.
After completing the installation of the optional
outside air vent system, the outside air control
lever must be put in service and tested to ensure
proper operation before completing any enclo-
sure around the firebox. Failure to do so may
result in extensive and costly rework.
Before the operation of the vent system can
be tested, the lever securing screw must be
removed. See Figure 16.
The hand operated outside air control lever
is located on the right side of the fireplace
opening. See Figure 16.
To open the outside air shutter, open the bottom
control access panel, reach into the gap between
the firebox bottom and the modesty panel, and
pull the outside air control lever all the way out.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
900301-00 05/2016
The outside air shutter should be fully open when
the fireplace is in use and completely closed
when the fireplace is not being used. Closing
it when not in use will prevent outside cold air
from entering the dwelling.
Operate the actuator through several cycles
including the closed position. Ensuring proper
operation and freedom of movement. Return
the actuator arm to the closed position.
Outside Air Control Lever with Stop Behind
Securing Screw
Outside Air Shutter in the
Closed Position
Control Compartment Access Panel
Outside Air Control Lever
and Securing Screw Location
Figure 16
Installation
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