Table of Contents
Advertisement
5.3. Vent location
• The vent terminal must be located on an outside wall or through the roof.
• This direct vent appliance is designed to operate when an undisturbed airflow hits the outside vent terminal from any
direction.
• The minimum clearances from this terminal that must be maintained when located on an outside wall are shown in figure
34. Any reduction in these clearances could result in a disruption of the airflow or a safety hazard. Local codes or
regulations may require greater clearances.
• The vent terminal must not be recessed into a wall or siding.
• The vent terminal should be positioned where it will not be covered by any snowdrifts.
Fig. 34 Vent terminal locations
KEY
VENT TERMINAL LOCATIONS - MINIMUM DISTANCES
A
Clearance above grade, verandah, porch, deck or balcony
B
Clearance to window or door that may be opened
C
Clearance to permanently closed window (recommended to prevent
condensation on window)
D
Vertical clearance to ventilated soffit located above the terminal within a
horizontal distance of 2 feet (60 cm) from the center-line of the terminal
E
Clearance to unventilated soffit
F
Clearance to outside corner
G
Clearance to inside corner
H
Horizontal clearance to center-line of meter/regulator assembly located
below the terminal
I
Clearance to service regulator vent outlet
J
Clearance to non-mechanical air supply inlet to the building or the
combustion air inlet to any other appliance
K
Clearance to a mechanical air supply inlet
L
Clearance above paved sidewalk or a paved driveway located on public
property.
Note: A vent must not terminate directly above a sidewalk or paved
driveway, which is located between two single family dwellings
and serves both dwellings.
M
Clearance under a verandah, porch, deck or balcony
Only permitted if veranda, porch, deck or balcony is fully open on a
minimum of 2 sides beneath the floor.
Note:
Local codes and regulations may require different clearances.
See figure 34
21
MINIMUM CLEARANCE
Ins
Cms
12
30
12
30
12
30
18
46
12
30
12
30
12
30
36
90
72
180
12
30
72
180
84
210
12
30
Advertisement
Table of Contents
