Installing Offsets; Optional Equipment Considerations; Blower - Intertherm BM36HC Installation Instructions Manual

Underside Of Chimney
Figure 36
FTF8-E30 Return Elbow*
Chimney Section (S)
FTF8-30 Offset Elbow*
*Part of Offset/Return Package Model FTF8-ES30
Figure 37

INSTALLING OFFSETS

First, review the Offset Elevation Chart and
Figure 37 for reference.
Step 1. Determine the offset distance where
chimney is to pass through the first ceiling-
dimension "A." To find this point on your
ceiling, first determine the center point for a
vertical chimney following the instructions for
vertical installation.
Measure height to the ceiling from the top of
fireplace-dimension "B." Use the appropriate
Offset Elevation Chart to find dimension "A."
Mark point where you will drive your nail to
show the center point for your offset ceiling cut.
Step 2. Proceed by using the Straight Up
Installation Instructions for cutting and fram-
ing ceiling and roof openings.
Note: See Framing and Dimension Chart for the
sizes of the ceiling and roof openings. The size
of the roof opening varies with the degree of
pitch of the roof.
14
Offset Elbow Assembly
Offset elbows install the same as chimney
sections. First, snap the inner section INTO the
preceding inner section of flue. Check connec-
tion by pulling up slightly to ensure a tight fit.
Next, the outer sections snap lock OVER the
preceding outer section of chimney. Again,
check outer section by pulling up slightly to
ensure proper connection is made.
Return Elbow Assembly
Return elbows install the same way as round
terminations and stabilizers:
Step 1. Hold return elbow over top of last
chimney section.
Step 2. Center inner slip section into inner flue
B
pipe-slip down.
A
Step 3. Center outer-locking section over outer
chimney pipe. Push down until locking joint has
firmly engaged.
Step 4. Pull up slightly on return elbow to
ensure locking joint has firmly engaged.
Step 5. Secure support straps to framing
members by nailing under tension in sheer
( Figure 38 ).
Figure 38
Note: The return elbow assembly performs the
same function as a stabilizer. Consider this
when determining the need for a stabilizer.
Note: Do not apply excessive pressure to any
subsequent chimney section following return
elbow assembly when installing. Ensure that
each subsequent chimney section is securely
attached by testing as noted above.
OPTIONAL EQUIPMENT
CONSIDERATIONS
Blower (Optional Upgrade)
A Blower Kit model BFK36 is available for use
with these models. The Blower Kit can be in-
stalled prior to or after installation of the fireplace.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Note: These fireplace models are not supplied
with an optional wall switch (FWSK) for fan
operation. BFK36 blower kits may be operated
with their integral blower (On/Off) switch. Re-
fer to the installation instructions included
with the Blower Kit for installation details.
THE FIREPLACE MUST BE WIRED TO THE
HOUSE ELECTRICAL SYSTEM AT THE TIME
OF INSTALLATION IN ORDER FOR THE OP-
TIONAL FANS TO OPERATE, (SEE FIGURES
39 AND 40 ).
POWER TO THE FIREPLACE
The Optional Blower Kit
Operates on 115 volt 60 Hz
150 watts AC
House Wiring Must Be Secured
With The Appropriate Electrical
Connector To The Fireplace
Convenience Outlet Wiring
Figure 39
Return
Elbow
Figure 40
Note: The utilization of fans will increase the
air flow around the firebox. However, only a
minimal increase in heat output should be
anticipated.
THIS FIREPLACE IS NOT INTENDED TO BE
USED AS A SUBSTITUTE FOR A FURNACE TO
HEAT AN ENTIRE HOME. USE FOR SUPPLE-
MENTARY HEATING ONLY.
The BFK36 Blower Kit is design certified by
Warnock Hersey for use with these appliances.
HOUSE
WIRING
GROUND
WIRE
COVER PLATE
Replace Cover Plate
After Electrical
Hook-Up
BLOWER THREE
PRONGED PLUG TO
GROUNDED OUTLET