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Page 16
August 1, 2008
Heat & Glo · Tiara I B & Tiara II B · 7010-149M
Step 1.
Check the installation instructions for required 1 in. (25mm)
clearances (air space) to combustibles when passing through
ceilings, walls, roofs, enclosures, attic rafters, or other nearby
combustible surfaces. See page 17, Figure 5.15. Check the
instructions below for maximum vertical rise of the venting
system, and any maximum horizontal offset limitations. All
offsets must fall within the set parameters of the vent graph
(Figure 5.2) located on page 12.
NOTE: Maximum vertical rise allowable is 35 ft. (11m),
Figure 5.11.
NOTE: Maximum number of 45° elbows permitted for a
vertical installation is eight, provided their installation does
not decrease maximum allowable horizontal run (as specified
by vent graph, on page 12).
Plumber’s Tape
connected to
Wall Strap
Wall Strap
Two 45˚ Elbows
Step 2.
Set the gas appliance in its desired location. Drop a plumb
bob down from the ceiling to the position of the appliance
flue exit, and mark the location where the vent will penetrate
the ceiling. Drill a small hole at this point. Next, drop a plumb
bob from the roof to the hole previously drilled in the ceiling,
and mark the spot where the vent will penetrate the roof.
Determine if ceiling joists, roof rafters, or other framing will
obstruct the venting system. You may wish to relocate the
appliance, or to offset, as shown in Figure 5.12 to avoid
cutting loadbearing members.
G. Vertical Termination
1. Direct Vent Pipe
Figure 5.10
Figure 5.11
Figure 5.12
VERTICAL
TERMINATION
CAP
STORM
COLLAR
FLASHING
FIRESTOP
PIPE
LENGTH
SUPPORT
BOX
35 ft. (11m)
MAXIMUM
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as speci-
fi ed.
WARNING
• Do not pack air space with insulation or other
materials.
Failure to keep insulation or other materials away
from vent pipe may cause fi re.