TABLE 9

MINIMUM VENTILATION OPENINGS

 

 

Recommended

 

Min. Ventilation

Opening

 

(2 Required)

 

Opening

Model

Square Inch

Size

Sq. In.

 

 

 

 

FH085D36E

240

8 x 16

128

 

 

 

 

FH110D48E

280

9 x 18

162

 

 

 

 

FH110D60E

280

9 x 18

162

 

 

 

 

FLF085D36E

290

8 x 19

152

 

 

 

 

FLR085D36E

290

8 x 19

152

 

 

 

 

FLF110D48E

340

9 x 19

171

FLF110D60E

 

 

 

FLR110D48E

340

9 x 19

171

FLR110D60E

 

 

 

FLR140D60E

360

9.5 x 19

180

FC085D36E

240

8 x 16

128

 

 

 

 

ALL VENTILATION AIR FROM OUTDOORS

A.The confined space shall be provided with two permanent openings, one in or near the top of the enclosure and one in or near the bottom. The openings shall communicate directly, or by means of ducts with outdoors or to such spaces (crawl or attic) that freely communicate with outdoors. (See Figures 13, 14, & 15.)

B.When directly communicating with outdoors or by means of vertical ducts, each opening shall have a free area of not less than one square inch per 4,000 BTU per hour (35 square inches per gallon per hour) of total input rating of all appliances in the enclosures. If horizontal ducts are used, each opening shall have a free area of not less than one square inch per 2,000 BTU per hour (70 square inches per gallon per hour) of total input of all appliances in the enclosure.

FIGURE 13

APPLIANCES LOCATED IN CONFINED SPACES

ALL AIR FROM OUTDOORS

NOTE: Each air duct opening shall have a free area of not less than one square inch per 2,000 BTU per hour (70 square inches per gallon per hour) of the total input rating of all appliances in the enclosure.

MIS-1337

Manual 2100-422 Page 23

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Image 25
321 Studios FLF085D36E, FLF110D48E, FH110D48E, FLR140D60E Minimum Ventilation Openings, ALL Ventilation AIR from Outdoors