Vent System; Installing Exhaust Vent And Intake Air Vent - Dunkirk DCC-150 COMBI Manuel D'installation, D'utilisation Et D'entretien

4.

VENT SYSTEM

GENERAL
• Install the boiler / venting system in accordance with these instructions and with the National Fuel Gas Code, ANSIZ223.1/
NFPA 54, CAN/CSA B149.1, and/or applicable provisions of local building codes.
• This boiler is a direct vent appliance according to ANSI Z21.13/CSA4.9 standard.
EXHAUST VENT AND INTAKE AIR VENT
This boiler is a direct vent appliance according to ANSI Z21.13/CSA4.9 standard. The intake and exhaust venting methods are
detailed in the section 4: "VENT SYSTEM". Do not attempt to install the Boiler using any other means. Be sure to locate the boiler
such that the air intake and exhaust vent piping can be routed through the building and properly terminated.
DANGER
Ensure the exhaust and intake vent piping comply with these instructions regarding the vent system. Inspect finished
combustion air intake and exhaust piping thoroughly to ensure all joints are well secured and airtight and comply with
all applicable code requirements, as well as with the instructions provided in this manual. Failure to provide a properly
installed vent system will cause severe personal injury or death.
WARNING
This vent system will operate with a positive pressure in the pipe. Do not connect vent connectors serving appliances
vented by natural draft into any portion of mechanical draft systems operating under positive pressure. Follow
the venting instructions below carefully. Failure to do so may result in severe personal injury, death.
• Do not use Foam Core Pipe or Cellular Foam Core Pipe in any portion of the venting from this boiler. Use of Foam
Core Pipe or Cellular Foam Core Pipe may result in severe personal injury, death.
• Determine exhaust vent location:
a) See illustration within this section of clearances for the location of the exit terminals of direct-vent venting systems.
b) Provide a minimum of 12"(305mm) in the united states and 36"(0.9m) in Canada distance from any door, operable window, or
gravity intake into any building.
c) Provide a minimum of 1.00 ft / 0.30 m clearance from the bottom of the exhaust above the grade (snow removal may be
necessary to maintain clearance).
d) In the United States provide a 3 ft/ 0.92 m horizontal clearance and in Canada a 3.00 ft / 0.92 m clearance from electrical
meters, gas meters, gas regulators and relief equipment. In no case shall the exit terminal be above or below the aforementioned
equipment within a height of 15 ft (4.5 m) unless the 3 ft (0.92 m) horizontal distance is maintained.
e) Do not locate the exhaust over public walkways where condensate could drip and/or freeze and create a nuisance or hazard.
f) When adjacent to a public walkway, locate exit terminal at least 7.00 ft / 2.13 m above grade.
g) Do not locate the exhaust directly under roof overhangs to prevent icicles from forming.
h) Provide a 36 in / 456 mm clearance from the inside corner of vertical walls, chimneys, etc., as well as horizontal corners
created by roof overhangs.
• Determine air intake vent location.
a) Provide 1.00 ft / 0.30 m clearance from the bottom of the intake air vent and the grade.
b) Do not locate intake air vent in a parking area where machinery may damage the pipe.
c) When venting with a two-pipe system. Minimum distance between exhaust vent and intake air vent on a single boiler is 4.72 in
/ 120.00 mm center-to-center.

INSTALLING EXHAUST VENT AND INTAKE AIR VENT

DANGER
Ensure that the flow of combustion and ventilation air are not obstructed.
Manufacturer urges users to install CO detectors in buildings where the boiler is located, even though such detectors
may not be required by local law. CO detectors should be calibrated regularly as specified by the manufacturer.
Note:
To fix flue pipes to the wall, supports should be approximately 3.28 feet (1 meter) from each other. Supports should be fixed along
the joint point of each pipe.
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240011373, Rev. G [03/31/2017]