Roof Downblast - Exhaust Belt Drive
GB-220HP
351⁄2
(902)
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| 51⁄2 (140) |
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| 13⁄4 (44) |
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30
(762)
Damper Size = 18 x 18 (457 x 457) Roof Opening = 201/2 x 201/2 (521 x 521) Shroud Thickness = 0.064 (1.6) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight = 166 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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Volume (cfm)
Volume (m3/hr)
Motor | Fan |
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| Static Pressure in Inches wg |
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HP | RPM |
| 0..5 | 0..75 | 1 | 1..25 | 1..5 | 2 | 2..5 | 2..75 | 3 |
| 3..25 |
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200HP |
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| CFM | 1961 |
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| 740 | BHP | 0..30 |
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/1106)3 |
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| Sones | 8..7 |
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1/2 |
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| MAXIMUM RPM = 1625 |
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| CFM | 2809 | 2331 | 1424 |
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| TIP SPEED (ft/min) = RPM x 5.596 |
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| 895 | BHP | 0..52 | 0..53 | 0..45 |
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| MAXIMUM MOTOR FRAME SIZE = 184T |
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| Sones | 11..4 | 10..9 | 10..3 |
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| CFM | 3116 | 2715 | 2153 |
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| 958 | BHP | 0..63 | 0..65 | 0..63 |
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3/4 |
| Sones | 12..8 | 12..1 | 11..6 |
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| CFM | 3409 | 3050 | 2602 | 1857 |
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| 1020 | BHP | 0..75 | 0..77 | 0..78 | 0..71 |
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| Sones | 14..1 | 13..6 | 13..1 | 12..6 |
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| CFM | 3885 | 3584 | 3243 | 2804 |
| 2136 |
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1 | 1125 | BHP | 0..99 | 1..02 | 1..04 | 1..04 |
| 0..97 |
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| Sones | 16..9 | 16..4 | 15..5 | 15..3 |
| 15..2 |
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| CFM | 4229 | 3967 | 3663 | 3314 |
| 2884 |
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| 1205 | BHP | 1..19 | 1..24 | 1..27 | 1..29 |
| 1..27 |
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11⁄2 |
| Sones | 18..8 | 17..9 | 17..2 | 16..5 |
| 16..4 |
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| CFM | 4569 | 4343 | 4070 | 3770 |
| 3416 | 2278 |
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| 1285 | BHP | 1..43 | 1..49 | 1..52 | 1..55 |
| 1..57 | 1..40 |
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| Sones | 21 | 20 | 19..1 | 18..1 |
| 17..8 | 18..9 |
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| CFM | 4843 | 4638 | 4384 | 4109 |
| 3811 | 2996 |
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| 1350 | BHP | 1..65 | 1..71 | 1..75 | 1..78 |
| 1..81 | 1..76 |
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2 |
| Sones | 23 | 22 | 21 | 19..8 |
| 19..3 | 19..1 |
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| CFM | 5114 | 4919 | 4692 | 4442 |
| 4169 | 3492 |
| 2250 |
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| 1415 | BHP | 1..88 | 1..95 | 2..00 | 2..04 |
| 2..07 | 2..07 |
| 1..78 |
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| Sones | 24 | 24 | 23 | 22 |
| 21 | 19..7 |
| 23 |
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| CFM | 5550 | 5368 | 5182 | 4952 |
| 4713 | 4166 |
| 3458 | 2850 | 2046 |
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| 1520 | BHP | 2..31 | 2..38 | 2..45 | 2..50 |
| 2..53 | 2..58 |
| 2..53 | 2..38 | 2..06 |
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3 |
| Sones | 27 | 27 | 27 | 26 |
| 24 | 23 |
| 22 | 22 | 22 |
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| CFM | 5982 | 5812 | 5642 | 5448 |
| 5233 | 4767 |
| 4196 | 3859 | 3377 |
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| 1625 | BHP | 2..80 | 2..88 | 2..95 | 3..02 |
| 3..06 | 3..13 |
| 3..16 | 3..12 | 3..01 |
| 2..76 |
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| Sones | 32 | 31 | 31 | 29 |
| 28 | 27 |
| 25 | 24 | 23 |
| 22 |
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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.
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