8
Termination Requirements & Clearances
In determining optimum vent termination,
carefully evaluate external conditions
especially when venting directly through
a wall. Since you must deal with odors,
gases and fly ash, consider aesthetics,
prevailing winds, distances from air
inlets and combustibles, location of ad-
jacent structures and any code require-
ments.
1. Exhaust must terminate above com-
bustion air inlet elevation.
2. Do not terminate vent in any enclosed
or semi-enclosed area, (i.e. carports,
garage, attic crawl space, etc.) or
any location that can build up a con-
centration of fumes.
3. Vent surfaces can get hot enough to
cause burns if touched by children.
Non-combustible shielding or guards
may be required (Figure 4).
•4'(1.2m)BELOWadoor,window,
cavity, or air vent
•4'(1.2m)HORIZONTALLYFROMa
door, window, cavity, or air vent
•1'(305mm)ABOVEadoor,window,
cavity, or air vent
Install Vent at Clearanc-
es Specified by the Vent
Manufacturer.
The exhaust termination location must be
at least
•1'(305mm)ABOVEthegroundlevel
•7'(2.1m)FROMapublicwalkway
•1'(305mm)FROMthewallpenetra-
tion point
•2'(610mm)FROManyadjacentcom-
bustiblessuchas:adjacentbuildings,
fences, protruding parts of the struc-
ture, roof eaves or overhangs, plants,
shrubs, etc.
Figure 4
Figure 5
ENDURANCE 50F TERMINATION REQUIREMENTS & CLEARANCES