IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 8
IBC Technologies Inc.
- 8 -
VFC 160
1.4.1.4 Venting Passage Through
Ceiling and Floor
The following instructions apply to 2”,
2.5" and 3” piping:
• pipe clearances - no specific
requirements - follow local codes
• piping must be supported in the
flooring
• all piping must be liquid and
pressure tight.
1.4.1.5 Rooftop Vent Termination
Vents must terminate as follows:
• 12” above grade and normal snow
line to vent terminal bottom
• DO NOT exhaust vent into a
common venting system
(See Figures 3 & 4 for rooftop vent
terminations)
2" min.
12"min.
snow line
12" min.
10 ft. or less
2" min.
air intake 180° elbow
with screen face down
exhaust vent with screen
2 ft. min.
Figure 3. Vent Terminations through
a Pitched Roof
1.4.1.6 Sidewall Vent Termination
Vents must terminate as follows:
• minimum 12” from any building
opening
snow line
2" min.
12" min.
12" min.
24" min.
36" min.
other than as listed, vents terminate in the sam
e manner as in figure 3. above.
Figure 4. Vent Terminations Through
a Flat Roof
• minimum 3’ above any forced air
intake located within 10’
• minimum 4’ horizontally from (and
in no case above or below unless 4’
horizontal distance is maintained),
from electric or gas meters,
regulators and relief equipment
• not to be located over public
walkway, in a confined space, or
under any overhang or deck
• vents must be installed such that flue
gas does not discharge towards
neighbor’s windows, or where
personal injury or property damage
can occur.
• For Direct Vent installations
employing sidewall vent
terminations, both the inlet and
exhaust terminations shall be located
on the same plane (side) of the
building, with the exhaust outlet
placed above the inlet to avoid re-
ingestion (later point not applicable
to concentric vent termination).
(See Figures 5, 6 & 7 for side wall vent
terminations)