Roof Downblast - Exhaust Belt Drive
GB-240
423⁄4
(1086)
*311⁄2 | (Pa)Pressure | |
(800) | ||
53⁄4 (146) | Static | |
13⁄4 (44) | ||
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34
(864)
Damper Size = 24 x 24 (610 x 610) Roof Opening = 261/2 x 261/2 (673 x 673) Shroud Thickness = 0.064 (1.6) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight = 165 lbs. (75 kg)
All dimensions in inches (millimeters).. *May be greater depending on motor. ^Weight shown is largest cataloged Open
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| Density | 0.075 lb/ft3 |
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| Density 1.2 kg/m3 | |
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(in. |
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Pressure |
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Static |
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Volume (cfm x 1000)
Volume (m3/hr x 1000)
Motor
HP
Fan
RPM
Static Pressure in Inches wg
0 | 0..125 | 0..25 | 0..375 | 0..5 | 0..625 | 0..75 | 1 | 1..25 | 1..5 |
240
| 425 | CFM | 3902 | 3422 | 2691 |
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| BHP | 0..19 | 0..21 | 0..20 |
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/715)3 |
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1/4 |
| Sones | 5..9 | 5..9 | 4..7 |
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| MAXIMUM RPM = 910 |
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| CFM | 4223 | 3785 | 3188 | 2036 |
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| TIP SPEED (ft/min) = RPM x 6.414 |
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| 460 |
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| MAXIMUM MOTOR FRAME SIZE = 184T |
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| BHP | 0..24 | 0..26 | 0..27 | 0..22 |
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| Sones | 6..7 | 6..6 | 5..7 | 4..2 |
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| CFM | 4637 | 4242 | 3761 | 3060 |
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1/3 | 505 | BHP | 0..32 | 0..35 | 0..35 | 0..34 |
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| Sones | 7..8 | 7..5 | 6..9 | 6..1 |
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| CFM | 5371 | 5031 | 4666 | 4195 | 3562 |
| 2112 |
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1/2 | 585 | BHP | 0..50 | 0..53 | 0..54 | 0..55 | 0..53 |
| 0..41 |
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| Sones | 10..3 | 9..7 | 9..1 | 8..8 | 8..2 |
| 7..2 |
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| CFM | 5720 | 5400 | 5069 | 4660 | 4131 |
| 3428 |
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| 623 | BHP | 0..60 | 0..64 | 0..65 | 0..66 | 0..65 |
| 0..61 |
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3/4 |
| Sones | 11..7 | 11..0 | 10..4 | 10..0 | 9..6 |
| 9..1 |
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| CFM | 6060 | 5757 | 5449 | 5094 | 4636 |
| 4073 |
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| 660 | BHP | 0..71 | 0..75 | 0..78 | 0..79 | 0..78 |
| 0..76 |
| 0..69 |
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| Sones | 13..1 | 12..4 | 11..8 | 11..3 | 11..0 |
| 10..6 |
| 10..4 |
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| CFM | 6702 | 6428 | 6158 | 5861 | 5507 |
| 5077 |
| 4568 |
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1 | 730 | BHP | 0..96 | 1..01 | 1..05 | 1..05 | 1..06 |
| 1..06 |
| 1..03 |
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| Sones | 15..8 | 15..0 | 14..3 | 13..8 | 13..4 |
| 13..1 |
| 12..9 |
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| CFM | 7143 | 6886 | 6632 | 6363 | 6058 |
| 5700 |
| 5266 | 4145 |
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| 778 | BHP | 1..16 | 1..21 | 1..26 | 1..27 | 1..28 |
| 1..29 |
| 1..28 | 1..18 |
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11⁄2 |
| Sones | 17..7 | 16..6 | 15..9 | 15..4 | 15..0 |
| 14..7 |
| 14..4 | 13..2 |
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| CFM | 7575 | 7332 | 7092 | 6844 | 6574 |
| 6261 |
| 5901 | 5002 |
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| 825 | BHP | 1..39 | 1..44 | 1..49 | 1..51 | 1..52 |
| 1..54 |
| 1..53 | 1..48 |
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| Sones | 19..7 | 18..6 | 17..7 | 17..2 | 16..8 |
| 16..4 |
| 16..2 | 14..8 |
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| CFM | 7988 | 7757 | 7529 | 7300 | 7055 |
| 6775 |
| 6457 | 5680 | 7757 |
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| 870 | BHP | 1..63 | 1..68 | 1..73 | 1..77 | 1..78 |
| 1..80 |
| 1..80 | 1..77 | 1..68 |
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2 |
| Sones | 22 | 21 | 19..6 | 19..1 | 18..7 |
| 18..3 |
| 17..9 | 16..9 | 21 |
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| CFM | 8355 | 8135 | 7916 | 7700 | 7467 |
| 7215 |
| 6933 | 6240 | 5388 |
| 3707 |
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| 910 | BHP | 1..86 | 1..92 | 1..97 | 2..02 | 2..03 |
| 2..05 |
| 2..06 | 2..05 | 1..97 |
| 1..66 |
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| Sones | 24 | 23 | 21 | 21 | 21 |
| 20 |
| 19..6 | 19..2 | 16..7 |
| 13..6 |
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Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects of a birdscreen. The sound ratings shown are loudness values in hemispherical sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: free inlet hemispherical sone levels.
35
