Combustion Air Kits; Gas Line Connection; Cold Climate Insulation - Intertherm BM36HC Installation Instructions Manual

Always check local building codes. Installa-
tion of the BFK36 Blower Kit must comply
with local regulations as well as the National
Electric Code.

Combustion Air Kits

These appliances are equipped with an outside
(make-up) air door and integral actuator arm.
The appliance must be installed with an out-
side air vent system ( Figure 41 ). These kits
come complete with detailed installation in-
structions and all components necessary in
completing a combustion air vent system.
Non-Combustible
Class 0 Or Class 1
6 Inch Air Inlet Duct
Actuator
Arm
Air Inlet Assembly
(Attach To Floor)
Vented Crawl Space
Figure 41
After completing the installation of the com-
bustion air vent system the actuator arm must
be put in service and tested to ensure proper
operation before completing any enclosure
around the firebox. Failure to do so may result
in extensive and costly rework.
Locate the actuator arm along the right side of
the appliance firebox opening and refer to
Figure 42 . To operate, push the end of the
actuator to the left as shown in Figure 42 , until it
"pops" free of its "locked" position. Pull the
actuator forward to open the combustion air
door, and push it back to close. To "lock" the
combustion air door closed, ensure the actuator
is pushed all the way back then push the end of
the actuators to the right until the step in the
actuator moves behind the appliance front face
within the slotted opening.
Operate the actuator through several cycles
including the "lock position. Ensuring proper
operation and freedom of movement. Return
the actuator arm to the locked position.
Combustion Air
Actuator
"Pop" Actuator to
the Left Before
Initial Use
Clamp
Pull Forward to Open,
Securely
Push Back to Close
At Top And
Bottom
Figure 42

Gas Line Connection

Install only a ¹⁄₂" black iron pipe through fire-
place wall for connection to a decorative gas
appliance inside the firebox. Outside, the iron
pipe connects to a gas shut-off valve recessed
flush into the wall or floor. The valve should be
controlled by a removable valve key for safety.
Always plumb gas line installation per local
codes. Check all connections with soap suds;
leaks will bubble. Never test any gas line con-
nection with a match or open flame.
This provision is intended for connection to a
decorative gas appliance incorporating an au-
tomatic shut-off device and complying with
the Standard for Decorative Gas Appliances
for installation in vented fireplaces, ANSI
Z21.60 (1991) or American Gas Association
draft requirements for Gas-Fired Log Lighters
for Wood Burning Fireplaces, Draft No. 4 dated
August, 1993. Install in accordance with the
National Fuel Gas Code, ANSI Z223.1. This
complies with the revised U.L. 127 standard.
WARNING: THIS FIREPLACE HAS NOT
BEEN TESTED WITH AN UNVENTED GAS
LOG SET. TO REDUCE RISK OF FIRE OR
INJURY, DO NOT INSTALL AN UNVENTED
GAS LOG SET INTO THIS FIREPLACE.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
CAUTION: WHEN USING THE DECORATIVE
GAS APPLIANCE, THE FIREPLACE DAMPER
MUST BE SET IN THE FULLY OPEN POSITION.
CAUTION: PLUMBING CONNECTIONS SHOULD
ONLY BE PERFORMED BY A QUALIFIED, LI-
CENSED PLUMBER. MAIN GAS SUPPLY MUST
BE OFF WHEN PLUMBING GAS LINE TO FIRE-
PLACE OR PERFORMING SERVICE.
If you're installing a gas line, connect it before
the fireplace is framed and enclosed in the
finished wall. The gas knockout is determined
by the indentation located at the bottom and
slightly off center in the side refractories. THE
KNOCKOUT IS ALWAYS REMOVED FROM IN-
SIDE THE FIREPLACE. DO NOT REMOVE THE
KNOCKOUT UNLESS YOU ARE INSTALLING A
GAS LINE. If removal is attempted from the
outer wrapper, side refractory damage may
occur. With a medium-sized hammer, lightly
tap the surface of the indentation. The refrac-
tory material is very thin in this area and is easily
removed. Once a small hole has been made,
continue tapping until you have reached suffi-
cient diameter for the gas line to fit through. The
entire knockout does not have to be removed.
Remove insulation in the gas line channel.
IMPORTANT: REPACK INSULATION MATERIAL
IN SQUARE HOLE AROUND GAS LINE, INTE-
RIOR AND EXTERIOR OF FIREPLACE, TO SEAL.

COLD CLIMATE INSULATION

If you live in a cold climate, it is especially
important to seal all cracks around the fireplace
opening with noncombustible material and
wherever cold air could enter the room. Sur-
rounding materials must be caulked where it
meets the black metal facing of the fireplace to
avoid cold air intrusion. Use noncombustible
caulking material only on fireplace facing to
seal. Also, the outside air inlet duct should be
wrapped with noncombustible insulation to
minimize the formation of condensation. Do
not place insulation materials on top of fire-
place or against chimney sections.
Note: A 1" air space must be preserved for all
combustible materials extending for any con-
tinuous length adjacent to the chimney.
It is especially important to insulate between
the studs of an outside chase cavity and under
the floor if the floor is above ground level. Do
not place insulation directly against the fire-
place or chimney system.
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