Daikin DC97MC, Руководство по установке

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within 12 in. (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, as follows:
(1)* Where directly communicating with the outdoors or where communi-
cating to the outdoors through vertical ducts, each opening shall have a
minimum free area of 1 in.
2
/4000 Btu/hr (550 min
2
/kW) of total input
rating of all appliances in the enclosure. [See Figure A.9.3.3.1(1)(a)
and Figure A.9.3.3.1(1)(b).]
Figure A.9.3.3.1(1)(a) All Combustion Air From Outdoors -
Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated
Attic.
Figure A.9.3.3.1(1)(b) All Combustion Air
From Outdoors through Ventilated Attic.
(2)* Where communicating with the outdoors through horizontal ducts, each
opening shall have a minimum free area of 1 in.
2
/2000 Btu/hr (1100
min
2
/kW) of total input rating of all appliances in the enclosure. [See
Figure A.9.3.3.1(2).]
Figure A.9.3.3.1(2) All Combustion Air From Outdoors
through Horizontal Ducts.
9.3.3.2* One Permanent Opening Method. One permanent openings,
commencing within 12 in. (300 mm) of the top of the enclosure, shall be
provided. The appliance shall have clearances of at least 1 in. (25 mm) from
the sides and back and 6 in. (150 mm) from the front of the appliance. The
opening shall directly communicate with the outdoors or shall communicate
through a vertical or horizontal duct to the outdoors or spaces that freely
communicate with the outdoors
(see Figure A.9.3.3.2) and shall have a
minimum free area of the following:
(1) 1 in.
2
/3000 Btu/hr (700 mm
2
per kW) of the total input rating of all
appliances located in the enclosure, and
(2) Not less than the sum of the areas of all vent connectors in the space.
Figure A.9.3.3.2 All Combustion Air
From Outdoors through Single Combustion Air Opening.
9.3.4 Combination Indoor and Outdoor Combustion Air. The use of a
combination of indoor and outdoor combustion air shall be in accordance
with (1) through (3)
(see example calculation in Annex J]:
(1) Indoor Openings: Where used, openings connecting the interior spaces
shall comply with 9.3.2.3.
(2) Outdoor Opening(s) Location. Outdoor opening(s) shall be located in
accordance with 9.3.3.