13
139760_A GF 500 DV Oct. 2017
Co-linear Vent Installation
The GF 500 DV may be vented through a masonry or
Class A prefabricated chimney using a 3-inch diameter
Co-linear Flexible Vent system approved for use with
a solid-fuel burning fireplace. When installed in the
manner described below, this system can improve the
performance of the appliance in cold climate situations,
as well as simplify the vent installation. See fig. 18.
Consult with the local code authority having
jurisdiction before proceeding with this type of
installation.
Refer to the vent manufacturer’s instructions for
specific installation procedures.
Follow these installation requirements:
The chimney flue must be thoroughly cleaned and
inspected by a qualified chimney service person.
In a masonry chimney, a fireclay liner must be present
the entire length of the chimney.
Prefabricated chimneys must be UL 103 or ULC S-629
listed and have a minimum INSIDE diameter of 6
inches, (150 mm).
No appliance may be installed into a chimney flue
serving another appliance of any kind.
THE AIR INTAKE FLEX PIPE MUST EXTEND 6 FEET BEYOND
THE DAMPER AREA OF THE FIREPLACE.
If the intake flex duct does not extend the full length
of the chimney and connect to both the unit and the
termination cap, A METAL BLOCK OFF PLATE MUST
BE CONSTRUCTED AND INSTALLED ABOVE THE UNIT
PRIOR TO THE END OF THE INTAKE FLEX AND MUST
COMPLETELY SEAL THE CHIMNEY FLUE FROM THE
ROOM.
If there is enough vent length and room in the flue,
adding a return loop in the air intake run will help
prevent draft reversals that can cause cold start
problems.
Figure 17.
M&G DuraVent
#923GCL
Co-linear
Adaptor.
Figure 18. Co-linear Adaptor installed through a masonry
chimney. M&G DuraVent components shown.
Max. offset
24”
(609 mm)
The Air
Intake Flex
pipe must
extend
beyond the
damper.
The chimney
must be sealed
off from the
room by a steel
plate at the
damper area.
#991 High
Wind Cap
Exhaust Gas
Intake
Air
Max. Co-linear
Height - 35 ft.
(10.66 m)
Min. Co-linear
Height - 10 ft.
(3.04 m)
Dual 3”
Flex Liners
WARNING: FAILURE TO POSITION THE PARTS AND
STOVE IN ACCORDANCE WITH THESE DIAGRAMS
OR FAILURE TO USE ONLY PARTS SPECIFICALLY
APPROVED FOR USE WITH THIS APPLIANCE MAY
RESULT IN PROPERTY DAMAGE OR PERSONAL
INJURY. BE SURE TO MAINTAIN THE CLEARANCES TO
COMBUSTIBLES SPECIFIED IN THIS MANUAL AND
IN THE INSTRUCTIONS PROVIDED WITH EACH VENT
COMPONENT.
