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Arctic Installation and Operation Manual
P/N 105641-01
equipment installation
instructions; and
ii. The "special venting systems"
shall be Product Approved by the
Board, and the instructions for the
system shall include a parts list
and detailed installation
instructions.
d. A copy of all installation instructions
for all Product Approved side wall
horizontally vented gas fueled
equipment, all venting instructions, all
parts lists for venting instructions,
and/or all venting design instructions
shall remain with appliance or
equipment at the completion of the
installation instructions.
3.4.3 Combustion Air and Venting
Requirements for Canada
Canadian Standard CAN/CSA-B149.1-05,
Natural gas and propane installation code
specifies venting systems and air supply for
appliances in Section 8. Paragraph 8.1.4 states
"Air supply shall be provided in accordance
with Clause 8.4 when either an appliance or a
combination of appliances has a total input
exceeding 400,000 Btuh. Air supply is defined
as combustion air, excess air, flue gas dilution
air, primary air, secondary air, and ventilation
air. The air supply requirements below are a
summation of Clause 8.4 specific to this
boiler.
3.4.3.1 Air Supply Requirements per
CAN/CSA-B149.1-05 for
Appliances having an input
exceeding 400 MBH.
Ventilation Air: an opening for ventilation air
at the highest point that opens to the
outdoors shall provide Ventilation of the
21
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space. The cross sectional area of this
opening shall be at least 10% of the area
required for combustion air, but in no case
shall the cross-sectional area be less than 10
2
2
in
(6500mm
).
Combustion Air: For combustion air where
the air supply is provided by natural airflow
from outdoors, in addition to the opening for
ventilation air, there shall be permanent
opening having a total cross-sectional free
area of not less than 1 in
2
BTU/hr. (70 mm
for each kW) of the total
rated input of the boiler(s). The location of
the opening(s) shall not interfere with the
openings for ventilation air. Please refer to
CAN/CSA-B149.1-05, Para. 8.4.4, for
combustion air openings if there are natural
draft, fan assisted or power draft assisted
equipment in the space.
When an air supply duct is used to supply
combustion air, its discharge opening shall be
located where there is no possibility of cold
air affecting steam or water lines or other
temperature sensitive equipment.
3.4.3.2 Combustion Air Supply Dampers,
Louvers, and Grilles
The free area of the combustion air supply
opening shall be calculated by subtracting the
blockage area of all fixed louvers, grilles or
screens from the gross area of the opening.
Openings in a fixed louver, grille, or screen
shall have no dimension smaller than ¼" (6
mm).
No manually operated damper or manually
operated adjustable louvers are permitted.
A motorized damper or louvers shall be
interlocked so the burner(s) cannot operate
unless the damper or louver is in the fully
open position.
www.thermalsolutions.com
sales@thermalsolutions.com
Form: 2435-3
Revision: 10
Date: 12-1-2018
2
for each 30,000
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