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Bradford White Corp.
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 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.
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 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. (See the
following descriptions.) Where ducts are used, they
table 3a - Horizontal terminations for Indoor Use
PVC
CPVC
Stainless Steel
Polypropylene
Model
Ducted Air
Exhaust
Ducted Air
Exhaust
Ducted Air
Exhaust
Ducted Air
Exhaust
1,000
CA008100
CA008300
CA008100
CA008300
CA008200
D2004500 CA008500 CS008500
1,700
CA010700
CA010900
CA010700
CA010900
CA011000
CA011100
CA011000
CA011100
PVC
CPVC
Stainless Steel
Polypropylene
Model
Ducted Air
Exhaust
Ducted Air
Exhaust
Ducted Air
Exhaust
Ducted Air
Exhaust
1,000
CA008400
CA008300
CA008400
CA008300
CA008500
CA008500 CA008500
CA008500
1,700
CA010800
CA010900
CA010700
CA010900
CA011300
CA011200 CA011200
CA011200
table 3b - Vertical terminations for Indoor Use
table 3c - outdoor terminations
Model
Ducted Air
Exhaust
1,000
CA008700
CA008900
1,700
CA010400
CA011500
table 4 - required Combustion air Pipe material
Material
United States
Canada
ABS
ANSI/ASTM D1527
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.
PVC, sch. 40
ANSI/ASTM D1785 or D2665
CPVC, sch. 40
ANSI/ASTM F441
Single wall galv. steel
26 gauge
Polypropylene
ULC-S636 Class 2C
Summary of Contents for BNTH1000
Page 2: ...Bradford White Corp...
Page 12: ...Page 8 Bradford White Corp Fig 6 Dimensions BNT 1700...
Page 38: ...Page 34 Bradford White Corp Fig 21 Ladder Diagram...
Page 39: ...Page 35 Brute Elite Boilers and Water Heaters Fig 22 Wiring Diagram...
Page 40: ...Page 36 Bradford White Corp...
Page 52: ...Page 48 Bradford White Corp Fig 51 Connection Terminals...
Page 130: ...Page 126 Bradford White Corp Fig 141 Rear Panel BNT1000 Fig 142 Rear Panel BNT1700...
Page 131: ...Page 127 Brute Elite Boilers and Water Heaters Fig 143 Machine Frame BNT1700...
Page 132: ...Page 128 Bradford White Corp Fig 144 Front Panels and Covers BNT1000 and BNT1700...
Page 133: ...Page 129 Brute Elite Boilers and Water Heaters Fig 145 Burners and Combustion Chamber BNT1000...
Page 134: ...Page 130 Bradford White Corp Fig 146 Burners and Combustion Chamber BNT1700...
Page 136: ...Page 132 Bradford White Corp Fig 149 Burner Detail BNT1700...
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