Weil-McLain 550 MBH, Инструкция по установке и эксплуатации

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Part number 550-100-168/0516
30
&IGURE
MINIMUM combustion air openings for direct exhaust applications —
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Provisions for combustion and ventilation air to be in accordance with the section “Air for Combustion and
Ventilation,” of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or applicable provisions of the local building
codes.
SlimFit
®
Series 3
COMMERCIAL CONDENSING GAS
-
FIRED WATER BOILER
—
Boiler Manual
DIRECT EXHAUST — Boiler room air openings
(continued)
Air openings
The required air opening sizes below are FREE AREA,
after reduction for louver obstruction. Note the ex-
ception below for large spaces.
SlimFit boiler
WITH other
appliances in room
SlimFit boiler
WITHOUT other
appliances in room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1
square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1
square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1 square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1 square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1 square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1 square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1
square inch per Btuh
of all appliances in the room
47/
openings, each at least:
1
square inch per Btuh
of all appliances in the room
— OR —
/.%
opening **, each at least:
1
square inch per Btuh
of all appliances in the room
./4)#%
2EQUIREMENTSFORUSINGTHE3).',%AIROPEN
INGOPTION
A single combustion air opening can be used for cases B , C or D above, sized as listed,
provided that:
s
The single opening must communicate directly to the outdoors or to a space that
communicates directly with outdoors (NOT to an interior space).
s
The top of the opening must be within 12 inches of the ceiling.
s The free area of the opening must be at least equal to the sum of the areas of all
equipment vent connectors in the space.
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NO combustion air openings are needed when the boiler (and other appliances) are installed
in a space with a volume NO LESS than 50 cubic feet per 1,000 Btuh of all appliances in
the space. That is, total the input of all appliances in MBH (1,000’s of Btuh), then multiply
this total times 50. The building MUST NOT be of tight construction.
Example: For a total input of 1500 MBH (1,500,000 Btuh) and an 8-foot ceiling height,
the minimum volume would be 50 x 1500 x 8 = 60,000 cubic feet.