
20 Heat & Glo • ST-HVBI-AU • 2082-900 Rev. J • 10/10
Figure 28. Termination Cap
For Vertical Terminations - To locate the flue and
install the flue sections:
• Locate and mark the flue center point on the under-
side of the roof, and drive a nail through the center
point.
• Make the outline of the roof hole around the center
point nail.
• Thesize of theroof holeframingdimensions depend
on the pitch of the roof. There MUST BE a 1-inch
(25 mm) clearance from the vertical flue pipe to
combustible materials.
• Mark the roof hole accordingly.
• Cover the opening of the installed flue pipes.
• Cut and frame the roof hole.
• Use framing lumber the same size as the roof rafters
and install the frame securely. Flashing anchored to
the frame must withstand heavy winds.
• Continuetoinstallconcentricfluesectionsupthrough
theroof holeand uppast theroof lineuntil you reach
the appropriate distance above the roof.
1” (25 mm)
7-1/2”
(192 mm)
MINIMUM
!
• Adjustthe termination captoits finalexteriorposition
on the building and interlock the flue sections.
• Use a high-temperature sealant gasket to seal be-
tween the pipe and exterior firestop.
WARNING: THE TERMINATION CAP MUST
BE POSITIONED SO THAT THE ARROW IS
POINTING UP.
To seal the roof hole, and to divert rain and snow from
the flue system:
• Attach a flashing to the roof using nails, and use a
non-hardeningmastic around theedges ofthe flash-
ing base where it meets the roof.
• Attach a storm collar over the flashing joint to form a
water-tightseal. Place non-hardeningmastic around
the joint, between the storm collar and the vertical
pipe.
• Slide the termination cap over the end of the flue
pipe and snap into place.
!
WARNING: FOLLOWING NATIONAL REG-
ULATIONS AND CODES OF PRACTICE
FOR MINIMUM CLEARANCES FROM GAS
TERMINALS, AND PLACEMENT OF GAS
TERMINAL.
NOTE: This also pertains to vertical flue systems in-
stalled on the outside of the building.
Roof Pitch H (min.)
Flat to 6/12............................305 mm (1.0 ft.)*
6/12 to 7/12...........................381 mm (1.25 ft.)*
Over 7/12 to 8/12..................458 mm (1.5 ft.)*
Over 8/12 to 9/12..................610 mm (2.0 ft.)*
Over 9/12 to 10/12................762 mm (2.5 ft.)*
Over 10/12 to 11/12..............991 mm (3.25 ft.)
Over 11/12 to 12/12..............1.2 m (4.0 ft.)
Over 12/12 to 14/12..............1.5 m (5.0 ft.)
Over 14/12 to 16/12..............1.9 m (6.0 ft.)
Over 16/12 to 18/12..............2.2 m (7.0 ft.)
Over 18/12 to 20/12..............2.3 m (7.5 ft.)
Over 20/12 to 21/12..............2.5 m (8.0 ft.
Figure 29. Minimum Height from Roof to
Lowest Discharge Opening
ERTICAL
WALL
TERMINATION
CAP
30.5 cm X
ROOF PITCH
IS X/ 30.5 cm
LOWEST
DISCHARGE
OPENING
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
50.8 cm
* 91.4 cm minimum in snow regions