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W415-0661 / C / 02.20.08
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2” OVERLAP
HI-
TEMP
SEALANT
CAULK
ING
#10 X 2”
SCREWS
EXH
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U
S
T
AIR
INTAKE VEN
T
PIPE
FIGURE 54
The air terminal mounting
plate may be recessed into
the exterior wall or siding
by 1½", the depth of the
return fl ange.
USING FLEXIBLE VENT COMPONENTS
HORIZONTAL AIR TERMINAL INSTALLATION
THE BGD36CF(G) USES: 4" EXHAUST / 7" AIR INTAKE VENT PIPE WITH A MINIMUM 6" BEND RADIUS
THE BGD42CF USES: 5" EXHAUST / 8" AIR INTAKE VENT PIPE WITH A MINIMUM 8" BEND RADIUS
Use only approved fl exible liner kits marked:
"Wolf Steel Approved Venting" as identifi ed by
the stamp only on the 7" outer vent pipe.
ELBOW
SPACER
1. Stretch the exhaust vent pipe to the required length taking into
account the additional length needed for the fi nished wall surface.
Slip the vent pipe a minimum of 2" over the inner sleeve of the air
terminal and secure with 3 #8 screws. Apply a heavy bead of the
high temperature sealant W573-0002 (not supplied).
2. Using the air intake vent pipe, slide over the outer combustion
air sleeve of the air terminal and secure with 3 #8 screws. Seal as
before.
6. If more fl exible vent pipe needs to be used to reach the fi replace,
coupler them together as illustrated in Figure 59. The vent system
must be supported approximately every 3 feet for both vertical and
horizontal runs. Use noncombustible
strapping to maintain the minimum 1"
clearance to combustibles.
7. BGD42CF ONLY: The vent heat shield
must be installed only when terminating
horizontally with no vertical rise. Remove
the two screws nearest the vent collars
on the top of the fi replace. Align the vent
heat shield (supplied) and secure. Adjust
the vent heat shield to touch the fi restop
spacer.
AIR INTAKE
VENT PIPE
EXHAUST
AIR INTAKE
VENT PIPE
COUPLER
COUPLER
#8 X 1/2”
SELF DRILLING
SCREWS & WASHERS
HI-TEMP
SEALER
FIGURE 59
VENT
HEAT
SHIELD
SCREWS
AD
JUST
TO
FIT
FIGURE 55
4. Apply a heavy bead of high temperature sealant W573-0007 (not
supplied) to the outside of the 4" inner collar of the fi replace approxi-
mately 1" from the end. Slide the fl exible vent pipe a minimum of 2"
over the fi replace vent collar and secure with 3 #8 screws.
5. Using the air intake vent pipe, slide over the fi replace combustion
air collar and secure with 3 #8 screws. Seal with high temperature
sealant W573-0002 (not supplied).
3. Insert the fl exible vent pipe
through the fi restop maintaining
the required clearance to combus-
tibles. Holding the air terminal (let-
tering in an upright, readable position),
secure to the exterior wall and make weather tight by sealing with
caulking (not supplied).
1. Fasten the roof support to the
roof using the screws provided.
The roof support is optional. In
this case the venting is to be
adequately supported using either
an alternate method suitable to the
authority having jurisdiction or the
optional roof support.
2. Stretch the exhaust vent pipe
to the
required length, slip it a minimum of 2" over
the inner sleeve of the air terminal con-
nector and secure with 3 #8 screws. Seal
using a heavy bead of the high temperature
sealant W573-0002 (not supplied).
3. Repeat using air intake vent pipe.
4. Thread the air terminal pipe assembly
down through the roof. The air terminal must
be located vertically and plumb. Attach the
air terminal assembly to the roof support,
ensuring that a minimum 16" of air terminal
will penetrate the roof when fastened.
DO NOT CLAMP THE FLEXIBLE VENT
PIPE.
VERTICAL AIR TERMINAL INSTALLATION
EXHAUST
VENT PIPE
AIR INTAKE
VENT PIPE
INNER
PIPE
HIGH
TEMPERATURE
SEALANT
AIR
TERMINAL
CONNECTOR
FIGURE 56
FIGURE 57
5. Remove nails from the shingles, above and to the sides of the
chimney. Place the fl ashing over the air terminal and slide it under-
neath the sides and upper edge of the shingles. Ensure that the air
terminal is properly centred within the fl ashing, giving a 3/4" margin
all around. Fasten to the roof. Do not nail through the lower portion
of the fl ashing. Make weather-tight by sealing with caulking. Where
possible, cover the sides and top edges of the fl ashing with roofi ng
material.
6. Aligning the seams of the
terminal and air terminal connec-
tor, place the terminal over the
air terminal connector making
sure the inner pipe goes into the
hole in the terminal. Secure with
screws provided.
7. Apply a heavy bead of
weatherproof caulking 2" above
the fl ashing. Note: Maintain a
minimum of 2" space between the
air inlet base and the storm collar.
Install the storm collar around the
air terminal and slide down to the
caulking. Tighten to ensure that a weather-tight seal between the air
terminal and the collar is achieved.
8. If more vent pipe needs to be used to reach the fi replace, couple
them together as illustrated. The vent system must be supported
approximately every 3 feet for both vertical and horizontal runs. Use
noncombustible strapping to maintain a clearance to combustibles
of 1".
FIGURE 58
For safe and proper operation of the
fi replace, follow the venting instruc-
tions exactly. All inner exhaust and
outer intake vent pipe joints may be
sealed using either high temperature
sealant W573-0002 or high tempera-
ture Mill Pac W573-0007 with the ex-
ception of the fi replace exhaust fl ue
collar which must be sealed using
Mill Pac (not supplied).
FIGURE 53
!
WARNING
Do not allow the inside liner to bunch up on horizontal or vertical
runs and elbows. Keep it pulled tight. A 1 1/4" air gap between
the inner and outer fl exible vent pipe all around is required for
safe operation. A spacer is required at the start, middle and end
of each elbow to ensure this gap is maintained. See Figure 53.
Spacers are attached to the inner fl ex liner at predetermined
intervals to maintain a 1 1/4" air gap to the outer fl ex liner. These
spacers must not be removed.