Installation Sheet

17
the vent pipe, and the combustible
surfaces of the enclosure. Do not ll
required air spaces with insulation.
(3) If venting system passes through
an attic space the Attic Insulation
Shield must be installed to prevent
contact between Pipe Sections and
the insulation or other debris. Nail the
base to oor of attic and adjust shield
for appropriate insulation level, then
attach the collar at the top of assembly
(Fig. 19). For vaulted ceilings, the
Attic Insulation Shield cannot be
installed. To prevent building insulation
and other debris from entering the
support box or contacting the pipe, a
chase enclosure can be constructed
around the support box. Ensure
proper clearance to combustibles
is maintained as prescribed by the
appliance manufacturer.
Figure 18
SECURE FLASHING
WITH NON-HARDENING
OPTIONAL
LOW PROFILE
HIGH WIND
VERTICAL
STORM
COLLAR
ROOF
FLASHING
TERMINATION
TERMINATION CAP
SEALANT AND
ROOFING NAILS
Figure 19
SHIELD
NAILS
REQUIRED
APPLIANCE MFG
INSULATION
ATTIC
CLEARANCE
REQUIRED BY
CLEARANCE AS
APPLIANCE MFG
REQUIRED BY
CLEARANCE AS