Hearth and Home Technologies Direct Vent Gas Appliance COLBAY-FS-B - Manual (Page 15)

10/08 Page 15 Quadra-Fire • Columbia Bay • 250-5195 Rev. K
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 11).
Figure 5.11
35 ft. (11m)
MAXIMUM
NOTE: Maximum vertical rise allowable is 35 ft. (11m)
Figure 5.11).
2'
1'
2'
1'
1'
NOTE: Maximum number of 90° elbows permitted for a
vertical installation is four, provided the termination falls
within the shaded area shown in vent graph on page 10. See
also
Figure 5.12, within the four 90° elbows configuration,
the maximum allowable pipe length on the horizontal runs is
1 ft. (305mm) the minimum allowable pipe length on vertical
runs is 1 ft. (305mm).
ADDITIONAL RESTRICTION: This installation may not
have two horizontal sections connected by 90° elbows.
Figure 5.12
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 16,
Figure
5.17. 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 11.
G. Vertical Termination
1. Direct Vent Pipe
Figure 5.10
VERTICAL
TERMINATION
CAP
STORM
COLLAR
FLASHING
FIRESTOP
PIPE
LENGTH
SUPPORT
BOX
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.