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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.
Method 2
: One permanent opening,
Section 3
VENTING AND COMBUSTION AIR
3.1
Combustion Air
MagnaTech 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 MagnaTechs 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 shall
Table 3. Ducted Air Accessories
(Place in section 3.1)
Model 1600 Model 2000 Model 2500 Model 3000 Model 3500 Model 4000
Screen for horizontal galvanized air pipe
D2012104
D2012101
D2012101
D2012102
D2012103
D2012103
Screen for horizontal PVC air pipe
CA012004
CA012001
CA012001
CA012002
CA012003
CA012003
Screen for horizontal polypropylene air pipe
CA012204
CA012201
CA012201
CA012202
CA012203
CA012203
Screen for vertical galvanized air pipe
D2012204
D2012201
D2012201
D2012202
D2012203
D2012203
Screen for vertical PVC air pipe
CA012404
CA012401
CA012401
CA012402
CA012403
CA012403
Screen for vertical polypropylene air pipe
CA012604
CA012601
CA012601
CA012602
CA012603
CA012603
Table 3a - Ducted Air Accessories
(Place in section 3.2)
Model 1600 Model 2000 Model 2500 Model 3000 Model 3500 Model 4000
Horizontal vent terminal for stainless steel
D2012004
D2012001
D2012001
D2012002
D2012003
D2012003
Screen for horizontal CPVC vent
CA012104
CA012101
CA012101
CA012102
CA012103
CA012103
Screen for vertical stainless steel vent
D2012304
D2012301
D2012301
D2012302
D2012303
D2012303
Screen for vertical CPVC vent
CA012504
CA012501
CA012501
CA012502
CA012503
CA012503
Table 3* - Vent Accessories
(Place in section 3.5)
Model 1600 Model 2000 Model 2500 Model 3000 Model 3500 Model 4000
Air intake screen for unit placed outdoors
CA0011904
CA011901
CA011901
CA011902 CA0011903 CA0011903
Vent terminal for unit placed outdoors
CA011803
CA011801
CA011801
CA011802
CA011803
CA011803
Table 3** - Air & Vent Accessories for Units Placed Outdoors
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
Содержание MagnaTech BMGH1600
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Страница 35: ...Page 31 MagnaTech BOILERS AND VOLUME WATER HEATERS ...
Страница 98: ...Page 94 BRADFORD WHITE 1 13 12 4 3 5 13 2 15 Final Assembly DETAIL A 9 10 8 Final Assembly ...
Страница 110: ...Page 106 BRADFORD WHITE 6 2 7 11 1 5 4 12 10 3 3 8 9 6 Control Panel Assembly ...
Страница 114: ...Page 110 BRADFORD WHITE 7 8 15 14 9 4 16 12 5 1 6 2 11 AC DISTRIBUTION BOX ASSEMBLY PART NUMBERS MODELS 2500 AND 3500 ...