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.
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