Venting And Combustion Air; Combustion Air; Combustion Air From Room - Bradford White Brute BNTH1000 Installation And Operation Instructions Manual

Brute
B
TM
RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h
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 1000 & 1200 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.
PVC
Model Ducted Air
1,000 CA008100 CA008300
1,200 CA008100 CA008300
PVC
Model Ducted Air
1,000 CA008400 CA008300
1,200 CA008400 CA008300
Material
ABS
PVC, sch. 40
CPVC, sch. 40
Single wall galv. steel
Polypropylene
Table 4. Required Combustion Air Pipe Material
CPVC
Exhaust Ducted Air Exhaust
CA008100 CA008300
CA008100 CA008300
Table 3a - Horizontal Terminations for Indoor Use
CPVC
Exhaust Ducted Air Exhaust
CA008400 CA008300
CA008400 CA008300
Table 3b - Vertical Terminations for Indoor Use
Model Ducted Air
1,000 CA008700
1,200 CA008700
Table 3c - Outdoor Terminations
United States
ANSI/ASTM D1527
ANSI/ASTM D1785 or D2665
ANSI/ASTM F441
26 gauge
ULC-S636 Class 2C
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. (See the following descriptions.)
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" (300 mm) of the top and
one commencing within 12" (300 mm) 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
Stainless Steel
Ducted Air Exhaust
CA008200 D2004500
CA008200 D2004500
Stainless Steel
Ducted Air Exhaust
CA008500 CA008500
CA008500 CA008500
Exhaust
CA008900
CA008900
Canada
The air pipe material must be chosen based upon
the intended application of the boiler, and must
be installed according to the vent manufacturer's
installation instructions.
Page 7
Polypropylene
Ducted Air Exhaust
CA008500 CS008500
CA008500 CS008500
Polypropylene
Ducted Air Exhaust
CA008500 CA008500
CA008500 CA008500
T