Air Vent - Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual

FIGURE 6-7 Concentric Roof Terminal
Combustion Air
Roof boot/fl ashing
(fi eld supplied)
Note: Support must
be fi eld installed to
secure termination
kit to structure
Vent
FIGURE 6-8 Flue on Roof, Air Intake on Side Wall
Vent
FIGURE 6-9 Flue on Roof, Combustion Air
Vent
Combustion
6 - COMBUSTION AIR AND VENT PIPING
Vent
Maintain 12"(305mm) US
(18"(457mm) Canada)
clearance above highest
anticipated snow level 24"
(610mm) above roof
Support
(fi eld supplied)
Combustion Air
Maintain 12"(305mm) US
(18"(457mm) Canada)
clearance above highest
anticipated snow level 24"
(610mm) above roof
Combustion Air
12" (305mm)
Anticipated
Snow Line
Ground Level
Maintain 12"(305mm) US
(18"(457mm) Canada)
clearance above highest
anticipated snow level 24"
(610mm) above roof
24" (610mm)
Air * Minimum Length
 Glue inner vent pipe to prevent
recirculation.
 Maintain 12" (305mm) US
(18"(457mm) Canada) minimum
clearance above highest
anticipated snow level. Maximum of
24"(610mm) above roof.
 Support must be fi eld installed to
Concentric
secure termination kit to structure.
Vent Roof
 Elbow, roof boot/fl ashing fi eld supplied.
Terminations
 Allowed Wall/Roof thickness 1/2"-30"
(12.7mm - 762mm).
 Vertical concentric vent system can be
installed in unused masonry chimney.
 Contact Technical Support 800-
325-5479 for questions regarding
installation or use.
Terminate vent system bottom, minimum
12" (300 mm) above highest anticipated
snow level.
Grade, Snow
Avoid locations where snow may drift
& Ice
and block vent and combustion air.
Ice or snow may cause boiler to shut
down if vent or combustion air becomes
obstructed.
Combustion air and vent termination
Doors &
must be 12" (305mm) from or below
Windows
doors, windows or gravity inlet.
* See Tables Combustion air and Vent Piping Length
4 & 5 Page 22 .
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