F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Inside corner vent terminations are permitted provided that (
):
1. Only two exterior walls come together to form an angle of 90
degrees to 135 degrees. There are no other exterior walls attached
to either wall to form an alcove.
2. The vent termination must be located at least 3 feet from an inside
corner and follow the clearance distances in the Inside Corner
Termination drawing.
3. The clearance distances apply when the vent is at least 3 feet (1
meter) from, but not more than 6 feet (2 meters) away from an
inside corner.
4. For vent terminations located more than 6 feet (2 meters) from an
inside corner, refer to the appropriate Direct Vent Clearance Table
for all two pipe terminations or Non-Direct Vent Clearance Table
for all single pipe terminations.
5. The clearance distances to items between the vent termination and
the outside corner, refer to the appropriate Direct Vent Clearance
Table for all two pipe terminations or Non-Direct Vent Clearance
Table for all single pipe terminations.
A190032
Fig. 42 – Inside Corner Termination
Inside Corner Terminations
Inside corner vent terminations are permitted provided that:
• Only two exterior walls come together to form an angle of 90 degrees to 135 degrees. There are no other exterior walls attached to either wall to
form an alcove.
• The clearance distances apply when the vent is at least 3 feet (1 meter) from, but not more than 6 feet (2 meters) away from an inside corner.
• For vent terminations located more than 6 feet (2 meters) from an inside corner, refer to the appropriate Direct Vent Clearance Table for all two pipe
terminations or Non-Direct Vent Clearance Table for all single pipe terminations.
• The clearance distances to items between the vent termination and the outside corner, refer to the appropriate Direct Vent Clearance Table for all two
pipe terminations or Non-Direct Vent Clearance Table for all single pipe terminations.
For clearance distances when vent termination is located more than 6 ft. (2 M) away from an inside corner, refer to the appropriate Direct Vent or Non-Direct Vent Clearance Table.
Clearance description when termination is at least 3 ft. (1 M) away and not more than 6 ft. (2 M) away from an inside corner.
Clearance above grade, veranda, porch, deck, balcony or anticipated snow level
12-in. (305 mm)
Clearance to a permanently closed window on either Wall A or Wall B
12-in. (305 mm)
Vertical clearance to a soffitt located above the vent termination within a horizontal distance of 2 ft. (61 cm) from the centerline of the vent termination
6 ft. (2 M)
Clearance to a ventilation exhaust (including HRV/ERV) on either Wall A or Wall B
12-in. (305 mm)
Clearance above paved sidewalk or paved driveway located on public property
7 ft. (2.1 M)
Clearance under a veranda, porch, deck, or balcony
N.P.*
No operable windows, doors or intakes of any type are permitted on Wall B between the vent termination and the inside corner when the vent termination is at least 3 ft. (1 M) away and not
more than 6 ft. (2 M) away from an inside corner.
The following items on Wall A must be located at least 3 ft. (1 M) away from the inside corner when a vent termination is located on Wall B and the vent termination is at least 3 ft. (1 M) away
or not more than 6 ft. (2 M) away from an inside corner.
A window or door that may be opened
The centerline extended above electrical meter or gas service regulator assembly
A service regulator vent outlet
The centerline of a dryer or water heater vent, or other appliance’s vent intake
A non-mechanical air supply inlet
Clearance distances shown for Wall A are measured horizontally from the exit of the termination on Wall B to the closest edge of the item shown below.
Clearance to a mechanical air supply (including HRV/ERV) inlet unless termination is 3 ft. (1 M) above the horizontal line of the intake
10 ft. (3 M)
For clearance distances from a vent termination to the outside corner of the wall, refer to the appropriate Direct Vent or Non-Direct Vent Clearance Table
*N.P. = Not Permitted
*N/A = Not Applicable
Clearance distances for
items greater than 3 feet
(1 meter ) away from the
inside corner, refer to the
Inside Corner Clearance
Table.
No operable windows, doors or
intakes of any type within the
shaded areas of Wall A and B.
For all other items, refer to the Inside
Corner Clearance Table.
3 ft. (1 M) to
6 ft. (2 M)
Notes:
For this illustration, Wall A is the wall adjacent to the wall the
vent termination is located. Wall B is the wall the vent
termination is located.
The termination can be located on either wall.
Minimum distance of a vent terminal to an inside corner is
3 ft. (1 M).
Maximum distance from an inside corner is 6 ft. (2 M).
Terminations located more than 6 feet from an inside
corner are not considered inside corner terminations.
Vent
Termination
3 ft. (1 M)
V
