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•
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 below. 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 any snowdrifts will not cover it.
•
Sidewall vent terminations within 7' of grade require a terminal guard when using the 551DVK.
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
Clearance to permanently closed window (recommended to prevent condensation
C
on window)
Vertical clearance to ventilated soffit located above the terminal within a horizontal
D
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
Horizontal clearance to center-line of meter/regulator assembly located within 15
H
feet (4.6 m) below the terminal
I
Clearance to service regulator vent outlet
Clearance to non-mechanical air supply inlet to the building or the combustion air
J
inlet to any other appliance
K
Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or a paved driveway located on public property.
L
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.
Clearance under a verandah, porch, deck or balcony.
M
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.
Horizontal Termination Locations
MIN. CLEARANCES
in
cm
1
0
1
0
1
0
1
1
0
1
0
1
0
90
90
1
0
10
10
1
0
9 9
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