Venting And Combustion Air; Combustion Air - Bradford White Brute BNTH Installation And Operation Instructions Manual

Brute
BOILERS AND VOLUME WATER HEATERS
Section 3 -

VENTING AND COMBUSTION AIR

3.1 Combustion Air

Brute 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 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.
Combustion Air From Room
In the United States, the most common requirements
2" PVC
2" PVC
Size
80 incl. opt.
Size
105 incl. opt.
150 80 n/a incl. opt. n/a
199/210 105 n/a incl. n/a opt.
150 n/a n/a
285 n/a n/a
199/210 399 n/a n/a n/a n/a
500 285 n/a n/a n/a n/a
600 399 n/a n/a n/a n/a
750 500 n/a n/a n/a n/a
850 600 n/a n/a n/a n/a
750 Concentric vent terminal = 10 ft. pipe length n/a n/a
850 n/a n/a
Table 4. PVC Vent Terminal Kits
Concentric vent terminal = 10 ft. pipe length
PRO TECH (FasNSeal)
SIZE Boiler
Adapter Termination
399-600
F303759
FSRC4(R.C)
750-850
F303759
Figure 8. Approved Stainless Terminations and Adapters
MATERIAL
ABS
PVC, sch 40
CPVC, sch 40
Single wall galv. steel
Figure 9. Required Combustion Air Pipe Material
HORIZONTAL INTAKE AND EXHAUST PVC VENT TERMINAL KITS
HORIZONTAL INTAKE AND EXHAUST PVC VENT TERMINAL KITS
opt. opt.
opt. opt.
opt. n/a opt. incl.
n/a opt. incl. opt.
n/a incl.
n/a opt.
n/a n/a n/a incl.
n/a n/a n/a opt.
n/a n/a n/a n/a
n/a n/a n/a n/a
n/a n/a n/a n/a
n/a n/a
n/a n/a
Flue Intake Air Boiler
Termination Adapter
FSBS4 FSAIH04 KB285600
303888
FSBS6 FSAIH04
303888
UNITED STATES
ANSI/ASTM D1527
ANSI/ASTM D1785 or D2665
ANSI/ASTM F441
26 gauge
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.
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
Method 2:
One permanent opening, commencing within
3" PVC
3" PVC
opt. opt. n/a
opt. opt.l n/a
opt. opt. opt. opt. n/a n/a
opt. opt. opt.l opt. n/a n/a
opt. opt. n/a
opt. opt. incl.
opt. n/a n/a opt. incl. n/a
opt. n/a opt. n/a incl. incl.
n/a n/a n/a n/a incl. incl.
n/a n/a n/a n/a incl. incl.
n/a n/a n/a n/a incl. incl.
n/a n/a incl.
n/a n/a incl.
HEAT FAB (Saf-T-Vent)
Intermediate Flue Intake Air
Adapter Termination Termination
9454BUREZ-1* 9492 9414TERM
5400CI
INSTALLATION STANDARDS
Air pipe material must be chosen
based upon the intended application of the boiler.
enclosure.
4" PVC 6" PVC
4" PVC 6" PVC
n/a n/a
n/a n/a
n/a n/a n/a n/a
n/a n/a n/a n/a
n/a n/a
opt. n/a
n/a opt. n/a n/a
opt. opt. n/a n/a
opt. opt. opt. n/a
opt. n/a opt. n/a
opt. n/a opt. opt.
n/a opt.
n/a opt.
Z FLEX (Z-Vent)
Boiler Flue
Adapter Termination
2SVSLA04 2SVSTP04
2SVSRCX04
CANADA
Page 9
Intake Air
Termination
2SVSTEX0490