Roof Downblast - Exhaust Belt Drive
GB-220HP
423⁄4
(1086)
*311⁄2 | (Pa)Pressure | |
(800) | ||
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53⁄4 (146) | Static | |
13⁄4 (44) |
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 = 186 lbs. (84 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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wg) |
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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 | Fan |
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| Static Pressure in Inches wg |
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HP | RPM |
| 0..5 | 0..625 | 0..75 | 1 | 1..25 |
| 1..5 | 1..75 | 2 | 2..25 |
| 2..5 |
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220HP |
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| 650 | CFM | 2952 | 2555 | 1892 |
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| BHP | 0..47 | 0..46 | 0..42 |
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/838)3 |
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1/2 |
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| Sones | 8..9 | 8..5 | 8..3 |
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| MAXIMUM RPM = 1230 |
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| CFM | 3215 | 2871 | 2440 |
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| TIP SPEED (ft/min) = RPM x 6.414 |
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| 680 | BHP | 0..53 | 0..53 | 0..52 |
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| MAXIMUM MOTOR FRAME SIZE = 184T |
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| Sones | 9..4 | 9..2 | 8..9 |
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| CFM | 3614 | 3312 | 2974 |
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| 728 | BHP | 0..65 | 0..65 | 0..65 |
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3/4 |
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| Sones | 10..6 | 10..3 | 9..9 |
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| CFM | 3973 | 3719 | 3424 | 2643 |
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| 775 | BHP | 0..77 | 0..79 | 0..79 | 0..75 |
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| Sones | 12..0 | 11..5 | 11..1 | 10..5 |
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| CFM | 4532 | 4317 | 4083 | 3536 | 2648 |
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1 |
| 850 | BHP | 1..00 | 1..02 | 1..04 | 1..03 | 0..95 |
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| Sones | 15..0 | 13..8 | 13..5 | 12..7 | 12..0 |
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| CFM | 4975 | 4791 | 4590 | 4119 | 3545 |
| 2557 |
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| 913 | BHP | 1..22 | 1..25 | 1..27 | 1..29 | 1..27 |
| 1..13 |
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11⁄2 |
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| Sones | 16..7 | 16..0 | 15..3 | 14..4 | 13..5 |
| 13..0 |
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| CFM | 5400 | 5245 | 5060 | 4660 | 4185 |
| 3602 |
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| 975 | BHP | 1..46 | 1..50 | 1..53 | 1..57 | 1..56 |
| 1..53 |
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| Sones | 18..7 | 18..2 | 17..5 | 16..3 | 15..4 |
| 14..8 |
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| CFM | 5740 | 5591 | 5432 | 5075 | 4643 |
| 4157 |
| 3492 |
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| 1025 | BHP | 1..68 | 1..72 | 1..76 | 1..81 | 1..82 |
| 1..804 |
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2 |
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| Sones | 21 | 20 | 19..4 | 18..2 | 17..1 |
| 16..4 |
| 15..6 |
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| CFM | 6076 | 5935 | 5794 | 5459 | 5082 |
| 4649 |
| 4136 | 3346 |
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| 1075 | BHP | 1..93 | 1..97 | 2..01 | 2..06 | 2..10 |
| 2..10 |
| 2..07 | 1..93 |
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| Sones | 23 | 22 | 21 | 20 | 18..7 |
| 18..3 |
| 17..7 | 16..4 |
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| CFM | 6422 | 6289 | 6154 | 5852 | 5520 |
| 5124 |
| 4703 | 4173 | 3299 |
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| 1127 | BHP | 2..20 | 2..24 | 2..29 | 2..36 | 2..41 |
| 2..42 |
| 2..41 | 2..37 | 2..17 |
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3 |
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| Sones | 24 | 24 | 23 | 22 | 21 |
| 20 |
| 19..3 | 18..6 | 17..7 |
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| CFM | 7100 | 6981 | 6858 | 6611 | 6316 |
| 6009 |
| 5649 | 5263 | 4812 |
| 4265 |
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| 1230 | BHP | 2..82 | 2..87 | 2..92 | 3..01 | 3..08 |
| 3..14 |
| 3..15 | 3..14 | 3..10 |
| 3..02 |
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| Sones | 28 | 27 | 27 | 27 | 25 |
| 25 |
| 23 | 22 | 22 |
| 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.
34
