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Termination Requirements (see the illustration below)
A
Minimum 9" clearance from any door or window
B
Minimum 12" above any grade, veranda, porch, deck or balcony
C
Minimum 12" from outside corner walls
D
Minimum 12" from inside corner walls
E
Minimum 11" clearance below unventilated soffits or roof surfaces
Minimum 18" clearance below ventilated soffits
Minimum 6" clearance from roof eaves
NOTE: Vinyl surfaces require 24"
F
Minimum 18" clearance below a veranda, porch, deck or balcony (must have two open sides)
G Minimum 48" clearance from any adjacent building
H
Minimum 84" clearance above any grade when adjacent to public walkways or driveways
NOTE: may not be used over a walkway or driveway shared by an adjacent building
I
Minimum 48" clearance from any mechanical air supply inlet, 72" for Canada
J
Minimum 36" clearance above and 48Ó below and to the sides of non-mechanical air supply inlet
K
Minimum 36" from the area above the meter/regulator (vent outlet)
L
Minimum 36" from the meter/regulator (vent outlet)
M Minimum 12Ó above the roof line (for vertical terminations)
*Note:
In Canada the vent termination must be a minimum 2' tall and 2' above any portion of the
roof within 10' of the vent.
N
Minimum 24Ó horizontal clearance to any surface (such as an exterior wall) Ð for vertical terminations
G
NOTE: Measure clearances to the nearest edge of the exhaust hood.
¥
Use the vinyl siding standoff (#950) when installing on an exterior with vinyl siding.
¥
Vent termination must not be located where it will become plugged by snow or other material
¥
These clearances meet UMC-1994 and the CNA/CGA-B149 code standards.
I
NSTALLATION
E
N
M
K
A
F
D
L
(C
.)
ONT
- For Qualified Installers Only!
E
I
C
B
Roof
Surface
11Ó Min.
Roof
6Ó Min.
Eaves
E
A
J
H
P
21
AGE
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