Boiler Room Air Openings - Freestyle 80 Manual

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9 Boiler room air openings

Figure 23
The FreeStyle
less than the recommended service clearances shown in Figure 2, page 7.
Air openings
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FreeStyle
(
22
M -
OUNT GAS FIRED WATER BOILER
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appliances in room
of all other appliances in the room
(Unless specified otherwise by
of all other appliances in the room
of all other appliances in the room
(Unless specified otherwise by
of all other appliances in the room
of all other appliances in the room
(Unless specified otherwise by
of all other appliances in the room
of all other appliances in the room
(Unless specified otherwise by
A single combustion air opening can be used for cases b, c or d above (
with other appliances in room only), sized as listed, provided that:
NO combustion air openings are needed if 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 500 MBH (500,000 Btuh), the minimum volume would
be 50 x 500 = 25,000 cubic feet.
—
Boiler Manual
®
FreeStyle
FreeStyle
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boiler
WITH other
TWO openings, each at least:
1 square inch per Btuh
appliance manufacturer)
TWO openings, each at least:
1 square inch per Btuh
— OR —
opening **, each at least:
1 square inch per Btuh
appliance manufacturer)
TWO openings, each at least:
1 square inch per Btuh
— OR —
opening **, each at least:
1 square inch per Btuh
appliance manufacturer)
TWO openings, each at least:
1 square inch per Btuh
— OR —
opening **, each at least:
1 square inch per Btuh
appliance manufacturer)
The single opening must communicate directly to the outdoors or to a space that
communicates directly with outdoors (NOT to an interior space).
The top of the opening must be within 12 inches of the ceiling.
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.
FreeStyle ® are
FreeStyle
®
boiler
WITHOUT other
appliances in room
openings are required if the
boiler installation provides at least the
recommended service clearances
shown in Figure 2, page 7.
Provide openings ONLY as shown
in Figure 2, page 7.
Each opening must have a free
area no less than 1 square inch per
1,000 Btuh input of the boiler.
FreeStyle
Part number 550-142-850/0716
®