B
14 1/2"
A
Figure 36:
TC42D Roof opening frame.
Figure 37: Roof support bracket.
Ceiling Opening:
1. Determine the exact position of the fireplace so that the vent pipe is cen-
tered (if possible) between two building framing members. Lay out the vent
system path, minimizing the number of elbows and length of vent. Consult
your local building codes prior to proceeding.
2. Cut and frame a 14 ½" opening in the floor, ceiling or roof where the vent
system will pass. Size of the opening in the roof may need to be increased
as the pitch of the roof increases. Avoid cutting rafters.
Ceiling Firestop:
Where a vent pipe passes through a floor or ceiling, a ceiling firestop (Figure 44)
must be used to retain insulation and maintain proper clearances.
From below, push the ceiling firestop through the opening and secure in place.
If the firestop is used to penetrate a floor, the outer shield may be trimmed in
length. If the firestop penetrates into an attic, leave the shield full length to keep
insulation away from the vent pipe. Additionally, after the vent pipe is in place,
install a storm collar on top of the shield. This will prevent loose insulation from
falling into the area between the vent pipe and the shield.
Vent Pipe Installation:
1. Install the first section of vent pipe
into the collar on top of the fire-
place. Secure in place with screws
and seal with approved "High
Temperature" self-adhesive alu-
minium tape provided.
2. Continue adding vent pipe lengths
up and through the firestop(s) and
through the roof. The vent pipe
must extend at least 12” above the
roof. Vent pipe may need to extend
further depending on the roof pitch.
See Roof pitch table (minimum) on
page 25 for precise lengths.
Seal the vent pipe as per "Vent Pipe
Sealant" section (Figure 41).
Roof Support Bracket:
Slip the roof support bracket down
over the vent pipe. Rotate the 90°
brackets to accommodate roof pitch.
Attach the brackets to the roof joists
with nails or building screws. Tighten
the band around the vent pipe and
secure in place with screws.
Size of the opening will have to
increase with the pitch of the roof
to ensure a 1 3/4" inch air space
clearance between vent pipe and
combustibles.
Roof Pitch
A
B
0/12
14 1/2"
7 1/4"
4/12
16 1/2"
8 3/4"
6/12
18"
10"
8/12
19 3/4"
11"
12/12
24"
13 3/4"
VENT PIPE
ROOF SUPPORT
BRACKET
(TCVT.93915)
23
TC42D 301015-48
5056.426D
