Ducted Combustion Air; Venting Requirements - Thermal Solutions Arctic Installation & Operation Manual

Arctic Installation and Operation Manual

3.3.3 Ducted Combustion Air

Ducted combustion air can be connected to
the boiler air intake flange. Ducts shall be
constructed of galvanized steel or a material
having equivalent corrosion resistance,
strength and rigidity.
Appendix B shall be used to determine the
ducted combustion air system equivalent
length. For typical ducted combustion air
arrangements see Appendix D.
3.4

Venting Requirements

In order to properly vent this boiler, the
installer must select and install a venting
system that meets all requirements specified in
this section, as well as following the
instructions provided by the venting system
manufacturer.
1. The venting system shall be designed and
constructed in accordance with the
National Fuel Gas Code, NFPA 54 /
ANSI Z223.1 and applicable local building
codes to develop a positive flow adequate
to convey flue or vent gasses to the
outdoors.
2. If this boiler is being installed in
Massachusetts, follow the Massachusetts
Code Instructions printed later in this
section.
3. Consult the vent pipe manufacturer's
instructions for vent system assembly and
system specific installation requirements.
4. Vent pipe system shall be acceptable for
use with boiler fuel type.
5. Vent pipe system shall be compatible
either by directly connecting, or by using
an adaptor, to the boiler vent connection.
a. This boiler is shipped with an AL 29-
4C ® Heat-Fab Saf-T-Vent connection.
b. Alteration of the boiler vent
connection is prohibited.
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Phone: 717-239-7642 Fax: 877-501-5212 Email:
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6. Do not reduce the diameter of the vent
pipe. The vent pipe must not be smaller
than the vent connector on the boiler.
7. Vent pipe system must be adequately
supported at intervals no less than five (5)
feet apart. The completed vent system
must be rigid and able to withstand
impacts without collapse.
8. The boiler's venting is Category IV
(positive vent pressure, flue condensing),
with regards to the National Fuel Gas
Code, NFPA 54 / ANSI Z223.1.
9. Vent pipe system must be fully sealed.
10. Atmospheric venting is prohibited.
11. Common venting is acceptable. Common
vents serving multiple boilers shall be
designed so that flue gasses will not expel
to the room through a boiler on standby.
The common vent system shall be capable
of maintaining a neutral to slightly
negative draft pressure at all times. This is
normally accomplished with a mechanical
draft fan. Common venting with any
12. Appendix B shall be used to determine
other appliances is prohibited.
the vent system equivalent length.
13. It is permissible to run vent pipe through
a vertical or horizontal chase provided
minimum clearances to combustible
materials are maintained.
14. The minimum clearance to combustible
material is six (6) inches unless otherwise
specified by the manufacturer.
15. The vent termination location is restricted
as follows:
a. Minimum twelve (12) inches above
grade plus normally expected snow
accumulation or seven (7) feet above
grade if located adjacent to public
walkways. DO NOT INSTALL over
public walkway where local experience
indicates condensation or vapor from
the boiler creates a nuisance or hazard.
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sales@thermalsolutions.com
Form: 2435
Revision: 8
Date: 9-19-2016