Locating The Appliance; General Information; Locating Appliance For Correct Vent Distance From Outside Wall Or Roof Termination - Bradford White Brute BNTH Installation And Operation Instructions Manual

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Section 2 -

LOCATING THE APPLIANCE

2.1 General Information
The Brute unit is designed for indoor installations only.
The appliance should be located to provide clearances
on all sides for maintenance and inspection. It should
not be located in an area where leakage of any
connections will result in damage to the area adjacent to
the appliance or to lower floors of the structure.
When such a location is not available, it is
recommended that a suitable drain pan, adequately
drained, be installed under the appliance.
The appliance is design certified by CSA-International
for installation on combustible flooring; in basements;
in closets, utility rooms or alcoves. Brutes must
never be installed on carpeting. The location for the
appliance should be chosen with regard to the vent
pipe lengths and external plumbing and on a level
surface. The unit shall be installed such that the gas
ignition system components are protected from water
(dripping, spraying, rain, etc.) during operation and
service (circulator replacement, control replacement,
etc.). When vented vertically, the Brute must be located
as close as practical to the vertical section of the vent.
If the vent terminal and/or combustion air terminal
terminate through a wall, and there is potential for snow
accumulation in the local area, both terminals should
be installed at an appropriate level above grade or the
maximum expected snow line.
The dimensions and requirements that are shown in
Table 1 should be met when choosing the locations for
the appliance.
2.2 Locating Appliance for Correct Vent
Distance from Outside Wall or
Roof Termination
The forced draft combustion air blower in the appliance
has sufficient power to vent properly when the
guidelines in Table 2 are followed.
NOTE: When located on the same wall, the Brute
combustion air intake terminal must be installed a
minimum of 12" below the exhaust terminal.Models 399-
850 also require a minimum horizontal distance from
intake to exhaust terminal of 36".
APPLIANCE SUGGESTED SERVICE ACCESS CLEARANCE
SURFACE
Left Side
Right Side
Top
Back
Closet, Front
(285-500)
Alcove, Front
(285-500)
Front
(600-850)
Vent
Certified by CSA for zero clearance to
combustible materials on all sides.
Table 2. Clearances
INTAKE / EXHAUST
STANDARD MAX EQUIV.
SIZE VENT FT.
150 3" 100
199/210 3" 100
100
285 4"
399 4" 100
500 4" 100
40
600* 4"
750 4" 40
850 4" 40
Installations in the U.S. require exhaust vent pipe that is a combination
of PVC & CPVC complying with ANSI/ASTM D1785 F441 or stainless
steel complying with UL1738. Installations in Canada require exhaust
vent pipe that is certified to ULC S636.
Intake (air) pipe must be PVC or CPVC that complies with ANSI/ASTM
D1785 F441, ABS that complies with ANSI/ASTM D1527 or galvanized
material.
The installer must comply fully with the manufacturer's installation
instructions, including use of minimum exhaust length CPVC, to main-
tain ANSI Z21.13 safety certification.
Closet and alcove installations do not allow the use of PVC under any
circumstances
To calculate max equivalent length, measure the linear feet of the pipe,
and add 5 feet (1.5m) for each 90°
* For any combination of vent and intake lengths up to 40 equivalent
feet, any even or uneven combination of length is allowed. For overall
lengths greater than 40 equivalent feet, the exhaust may be up to 20
feet greater than the intake length.
Table 3. Vent / Air Pipe Sizes
*
Add 2 1 / feet (.76 meters) for each 45 elbow used.
2
B W
RADFORD
INCHES CM
1
2.5
12 31
24
61
6 15
6 15
24
61
24 61
– –
OPTIONAL MAX EQUIV.
M VENT FT.
n/a —
30.5
30.5 n/a —
30 n/a —
30 n/a —
30 n/a —
100
6.1 6"
6.1 6" 100
6.1 6" 100
*
elbow used.
HITE
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