Vertical Termination; Vent Termination Window - Jøtul GF 600 DV II Firelight Installation And Operation Instructions Manual

138090_Rev_F 7.29.10
Vertical Venting and Termination
The GF 600 DV II Firelight can be vertically vented
through a roof or ceiling. Follow these guidelines
Steep roofs, nearby trees, or predominantly windy

conditions, can promote poor draft or down
draft conditions. In such cases, an increase to the
height of the vent may improve performance.
If an offset or elbow is necessary in the vertical

rise, the vent pipe must be supported every three
feet to avoid excessive stress on the offsets. Use
listed Wall Straps from any of the approved vent
suppliers.
A maximum of two 90° or four 45° elbows may be

used. Whenever possible, use 45° elbows instead
of 90° elbows as they offer less restriction to the
flow of flue gases and intake air.
A firestop is required at every floor penetration.

The opening should be framed to 10" X 10" inside
dimension. A listed wall thimble is required as a
firestop.
Always maintain a minimum 1" clearance from all

sides of the vertical vent system to any combus-
tible material.
IT IS NECESSARY to add restriction to a vertical

vent installation to compensate for excessive
draft. See page 8; Adjusting Vent Restriction.
GAS VENT HEIGHT: In no case shall any discharge

opening on the cap be less than 18" (457 mm)
horizontally from the roof surface.
Horizontal Overhang
18”.
min.
Termination
Cap
Figure 8. Vent height and clearance from adjacent
surfaces.
10
18”.
min.
Lowest Discharge
Opening
18” min.
ANY VENTING WITH A VERTICAL RISE MUST
TERMINATE (END) WITHIN THE SHADED AREA.
Vent restriction is required for:
• All Co-linear (flex pipe), but not fully closed.
• All Coaxial (rigid pipe) venting higher than 7 feet.
• Adjust restriction as shown on page 8.
• If termination falls directly on a dashed zone divi-
sion line, use the less restrictive setting; i.e. vent
terminating at 15 feet will require
1/3 restriction, Position B.
40 Ft.
(12.19 m)
35 Ft.
(10.67 m)
30 Ft.
(9.14 m)
C L O S E D
RESTRICTOR
except
25 Ft.
(7.62 m) Co-linear Vent
D
20 Ft.
(6.10 m)
RESTRICTOR
15 Ft.
(4.57 m)
RESTRICTOR
10 Ft.
(3.05 m)
7 Ft. (2.13 m)
OPEN
Min. Height for
RESTRICTOR
Vertical
Termination
A
5 Ft.
(1.52 m)
2 Ft.
(61cm)
Required
Min. Vertical Rise
for 16 in.
(406 mm)
16 in.
Termination
(406 mm) (1.52 m)
Max. with
Min. Rise
H O R I Z O N TA L R U N
Figure 9. Vent termination must fall within the
shaded areas. Set exhaust restriction in the position
appropriate to the zone in which the vent terminates.
2 / 3
C
1 / 3
B
10 Ft.
5 Ft.
(3.05 m)