19
Venting Installation
Anchor Plate/ Damper Installation:
Cut a twelve inch (12”) diameter hole in the center of
the ceramic ber blanket which is then placed on the top plate,
aligned with and centered on the ue hole in the top plate.
The IBV anchor plate assembly is then dropped into
the hole in the top plate so that the conical shaped down draft
diverter / in-line damper assembly hangs down into the smoke
chamber (Figure 20).
When properly installed the wire cable is toward the
the front of the replace.
The mounting ange connects to the IBV top plate
by setting four screws (one and one-quarter inch (1-1/4”)
galvanized drywall screws) through the ange, through the
ceramic ber blanket and into the IBV top plate.
To install B-Vent piping, slide the rst piece of ten inch
(10”) inside diameter B-Vent pipe over the IBV starter collar
and attach with either two screws or other means approved by
the vent
manufacturer.
Actual installations will vary due to individual job
requirements. However, always maintain required clearances to
combustible materials and do not violate any specic B-Vent
installation requirements - ANSI Z223.1 / NFPA 54. Check
with the B-Vent manufacturer regarding specic clearances.
Be sure that in every case where offsets are used that
they are properly supported and that re stops are used wherever
the vent passes through a sub-oor, ceiling joist ystem or an
attic overhang.
The vent pipe must terminate with a listed type vent
cap and extend through an approved roof ashing, roof jack or a
roof thimble vertically through the roof. Be sure to maintain the
listed clearances at all points of the vent system installation.
Listed vent cap
IBV Anchor Plate
with down draft diverter
Ceramic
Fiber Blanket
IBV Firebox
Figure 20
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