Typical Installation and Anchoring
Typical Mounting - Fan to Curb
Fastener 4 in. (102 mm) |
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| 1/4 in. (6 mm) fastener minimum | ||
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from curb edge |
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| 5/16 in. (8 mm) recommended | |||||||||||
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| See table for fastener quantities | |||||||||
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USGF | Fasteners | Total |
Size | Per Side | Fasteners |
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140 - 160 | 5 | 20 |
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180 - 200 | 5 | 20 |
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Fasteners on each side of the fan are to be installed with one fastener 4 in. (102 mm) from each edge and one fastener centered. The remaining fasteners are to be equally spaced.
Concrete Deck Anchoring
Corner Detail
11/4 in. (32 mm)
11/4 in. |
(32 mm) |
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| Outside of Roof Curb |
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| 1 in. (25 mm) less than Fan Curb Cap | Use 3/8 in. (10 mm) expansion anchor | ||||
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| or equal into concrete. |
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| Fasteners one on each corner as |
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| 1 in. (25 mm) Insulation | Each side at center of unit. Maximum | ||||
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| fastener spacing of 8 in. (203 mm), | |||||||||
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| add additional fasteners to satisfy. | ||||
8 to 18 in. (203 to 457 mm) |
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(Optional 24 in. (610 mm) SD Curb) |
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Roof Opening |
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Minimum Concrete | |
Strength of 2000 PSI | Embedment Recommended |
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Minimum |
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edge distance |
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5 in. (127 mm) Mounting Flange | Center fasteners |
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Outside Flange |
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USGF | Fan Curb Cap | Roof Opening | Fasteners Per Side | Outside Flange | |
Size | |||||
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141 - 161 | 22 x 22 (559 x 559) | 181/2 x 181/2 (470 x 470) | 5 | 31 x 31 (787 x 787) | |
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180 - 200 | 30 x 30 (762 x 762) | 201/2 x 201/2 (521 x 521) | 7 | 39 x 39 (991 x 991) | |
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All dimensions in inches (millimeters).
