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Page 12
SECTION 3.
Venting and Combustion Air
3.1 Combustion Air
Brute Elite boilers and water heaters must have
provisions for combustion and ventilation air in
accordance with the applicable requirements for
Combustion Air Supply and Ventilation in the National
Fuel Gas Code, ANSI Z223 1; or in Canada, the Natural
Gas and Propane Installation Code, CSA B149.1. All
applicable provisions of local building codes must also
be adhered to.
A Brute Elite unit can take combustion air from
the space in which it is installed, or the combustion
air can be ducted directly to the unit. Ventilation air
must be provided in either case.
3.1.1 Combustion Air From Room
In the United States, the most common
requirements specify that the space shall communicate
with the outdoors in accordance with method 1 or 2,
which follow. Where ducts are used, they shall be of the
same cross-sectional area as the free area of the
openings to which they connect.
HORIZONTAL INTAKE AND EXHAUST PVC VENT TERMINAL KITS
2" PVC
SIZE
Standard
Concentric
CA006000
80
included
optional
105
included
optional
150
n/a
n/a
199 /210
n/a
n/a
285
n/a
n/a
399
n/a
n/a
500
n/a
n/a
600
n/a
n/a
750
n/a
n/a
850
n/a
n/a
Concentric vent terminal = 10 ft. pipe length.
Table 3a. PVC Vent Terminal Kits.
PRO TECH (FasNSeal)
SIZE
Boiler
Adapter
Termination
399-600
F303759
FSRC4(R.C)
F303759
750-850
(intake only)
MATERIAL
ABS
PVC, sch 40
CPVC, sch 40
Single wall galv. steel
3" PVC
4" PVC
Standard
Concentric
Standard
CA005900 239-44069-01
optional
optional
n/a
optional
optional
n/a
included
optional
n/a
included
optional
n/a
optional
optional
included
n/a
n/a
included
n/a
n/a
included
n/a
n/a
included
n/a
n/a
n/a
n/a
n/a
n/a
Flue
Intake Air
Boiler
Termination
Adapter
FSBS4
FSAIH04
KB285600
303888
FSAIH04
FSBS6
303888
UNITED STATES
ANSI/ASTM D1527
ANSI/ASTM D1785 or D2665
ANSI/ASTM F441
26 gauge
Table 4. Required Combustion Air Pipe Material.
Method 1: Two permanent openings, one
commencing within 12" (300mm) of the top and one
commencing within 12" (300mm) of the bottom, of the
enclosure shall be provided. The openings shall
communicate directly, or by ducts, with the outdoors or
spaces that freely communicate with the outdoors.
When directly communicating with the outdoors, or
when communicating to the outdoors through vertical
ducts, each opening shall have a minimum free area of 1
square inch per 4000 Btu/hr (550 square mm/kW) of
total input rating of all equipment in the enclosure.
When communicating to the outdoors through
horizontal ducts, each opening shall have a minimum
free area of not less than 1 square inch per 2000 Btu/hr
(1100 square mm/kW) of total input rating of all
equipment in the enclosure.
Method 2: One permanent opening, commencing
within 12" (300mm) of the top of the enclosure, shall be
permitted. The opening shall directly communicate with
the outdoors or shall communicate through a vertical or
horizontal duct to the outdoors or spaces that directly
communicate with the outdoors and shall have a
minimum free area of 1 square inch per 3000 Btu/hr
(734 square mm/kW) of the total input rating of all
equipment located in the enclosure. This opening must
not be less than the sum of the areas of all vent
connectors in the confined space.
Other methods of introducing combustion and
6" PVC
ventilation air are acceptable, providing they conform to
Standard
the requirements in the applicable codes listed above.
n/a
In Canada, consult local building and safety codes or,
n/a
in absence of such requirements, follow CAN/CGA B149.
n/a
3.1.2 Ducted Combustion Air
n/a
The combustion air can be taken through the wall, or
through the roof. When taken from the wall, it must be
n/a
taken from out-of-doors by means of the horizontal wall
n/a
terminal, shown in
n/a
appropriate diameter air pipe. When taken from the roof, a
optional
field-supplied rain cap or an elbow arrangement must be
included
used to prevent entry of rain water (see Figure10).
included
Use ABS, PVC, CPVC or galvanized pipe for the
HEAT FAB (Saf-T-Vent)
Intermediate
Flue
Adapter
Termination Termination
9492
9454BUREZ-1*
5400CI
Table 3b. Approved Stainless Steel Terminations and Adapters.
INSTALLATION STANDARDS
based upon the intended application of the boiler.
B
RADFORD
Table(s)
3. See
Table 2
Z FLEX (Z-Vent)
Intake Air
Boiler
Flue
Adapter
Termination
2SVSTP04
9414TERM
2SVSLA04
2SVSRCX04
CANADA
Air pipe material must be chosen
W
C
HITE
ORP.
to select the
Intake Air
Termination
2SVSTEX0490
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