Roof Downblast Exhaust
Belt & Direct Drive
GB-081 • G-098
243⁄8
(619)
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| *23 | 3⁄4 | ||||
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| 43⁄8 (111) |
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| 13⁄4 (44) | ||||||
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19
(483)
Damper Size = 12 x 12 (305 x 305) Roof Opening = 141/2 x 141/2 (368 x 368) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/60 lbs. (24/27 kg)
All dimensions in inches (millimeters).. *May be greater depending on motor. ^Weight shown is largest cataloged Open
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| RPM (Direct) |
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| RPM |
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| HP |
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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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| L | E | F |
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Volume (cfm)
Volume (m3/hr )
Direct Drive RPM |
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| Motor HP |
| Fan | |||
| Belt |
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| Direct |
| RPM | |
081 |
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| 098 |
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| 720 | |
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| VG- | 790 | ||
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| 1/4 |
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| 860 | ||
| 0 | 0..125 |
CFM | 361 | 272 |
BHP | 0..01 | 0..01 |
Sones | 3..0 | 2..7 |
CFM | 396 | 315 |
BHP | 0..02 | 0..02 |
Sones | 3..5 | 3..2 |
CFM | 431 | 358 |
BHP | 0..02 | 0..02 |
Sones | 4..0 | 3..7 |
| Static Pressure in Inches wg |
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0..25 | 0..375 | 0..5 | 0..625 |
| 0..75 | 0..875 | 1 |
| 1..125 | |||
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/2985)3 |
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| MAXIMUM RPM - |
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181 |
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| TIP SPEED (ft/min) = RPM x 2.929 |
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0..02 |
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| MAXIMUM MOTOR FRAME SIZE = 56 |
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3 |
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261 |
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0..02 |
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3..4 |
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1/6
VG
930
1000
1070
1315
1490
CFM | 466 | 399 |
BHP | 0..03 | 0..03 |
Sones | 4..6 | 4..4 |
CFM | 501 | 439 |
BHP | 0..03 | 0..04 |
Sones | 5..3 | 5..1 |
CFM | 536 | 478 |
BHP | 0..04 | 0..04 |
Sones | 5..9 | 5..8 |
CFM | 571 | 517 |
BHP | 0..05 | 0..05 |
Sones | 6..6 | 6..5 |
CFM | 659 | 612 |
BHP | 0..08 | 0..08 |
Sones | 8..3 | 8..1 |
CFM | 746 | 706 |
BHP | 0..11 | 0..12 |
Sones | 10..1 | 9..9 |
CFM | 836 | 800 |
323 |
0..03 |
4..0 |
372259
0..04 0..04
4..7 4..4
416338
0..05 0..05
5..4 5..0
460 | 396 | 283 |
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0..06 | 0..06 | 0..05 |
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6..1 | 5..7 | 5..5 |
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564 | 513 | 456 | 362 |
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0..08 | 0..09 | 0..09 | 0..08 |
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7..8 | 7..4 | 7..0 | 6..9 |
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663 | 621 | 574 | 525 | 452 | 353 |
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0..12 | 0..12 | 0..12 | 0..12 | 0..12 | 0..11 |
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9..8 | 9..3 | 8..9 | 8..6 | 8..5 | 8..4 |
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763 | 725 | 686 | 645 | 603 | 550 | 466 | 377 |
1670
1/4 |
BHP | 0..16 | 0..16 |
Sones | 12..0 | 11..9 |
CFM | 864 | 829 |
BHP | 0..17 | 0..18 |
Sones | 12..7 | 12..5 |
0..16 | 0..17 | 0..17 | 0..17 | 0..17 | 0..18 | 0..17 | 0..16 |
11..7 | 11..4 | 11..0 | 10..7 | 10..4 | 10..1 | 10..0 | 9..9 |
793 | 756 | 719 | 679 | 640 | 592 | 527 | 441 |
0..18 | 0..18 | 0..19 | 0..19 | 0..19 | 0..19 | 0..19 | 0..18 |
12..3 | 12..1 | 11..7 | 11..4 | 11..1 | 10..8 | 10..6 | 10..5 |
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.
19
