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22618-17-0308 Page 21
Figure 23
Single Flue - Vertical Vent Run
with 45 degree elbows
VENT EXAMPLES FOR SINGLE FLUE (cont.)
Figure 22
Minimum Exterior Grade Dimension - Single Flue, Horizontal Venting Below Floor
WARNING: Major U.S. building codes specify minimum chimney and/or vent height above the rooftop. These minimum heights are
necessary in the interest of safety. These specifications are summarized in Figure 23.
MANTEL
PVC PIPE
(SUPPLIED BY INSTALLER)
2 - 45 DEG. PVC
BENDS (SUPPLIED
BY INSTALLER)
GAS SUPPL
Y
FLASHING
H
SURROUND
MODEL #PVE-1
VENT CAP
(SUPPLIED WITH VENT KIT)
MODEL #PVVK-SV
FLEXIBLE PVC PIPE
WITH 1/2” COUPLING ON EACH END
MODEL #PVVK-CF
A
X
12
ROOF PITCH
IS
12
X
ROOF PITCH H (Min.)
Flat to 6/12 12” (305 mm)
6/12 to 7/12 15” (381 mm)
Over 7/12 to 8/12 18” (457 mm)
Over 8/12 to 16/12 24” (610 mm)
Over 16/12 to 21/12 36” (914 mm)
Determining Minimum Vent Height Above
the Roof