Roof Downblast Exhaust
Belt & Direct Drive
GB-101 • G-103
243⁄8
(619)
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| *23 | 3⁄4 | (Pa) | ||||
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| (603) |
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| 43⁄8 (111) |
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| 13⁄4 (44) | |||||||
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 = 54/61 lbs. (24/28 kg)
All dimensions in inches (millimeters).. *May be greater depending on motor. ^Weight shown is largest cataloged Open
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| RPM (Belt) |
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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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| E | Density 1.2 kg/m3 |
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wg) |
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(in. |
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Pressure |
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| T | O | 1350 | |
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Static |
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| H | E | L |
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| L | E | C |
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Volume (cfm)
Volume (m3/hr )
Direct Drive RPM |
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| Motor HP |
| Fan | |||
| Belt |
| Direct |
| RPM | ||
| 101 |
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| 103 | 720 | ||
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| VG- |
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| 860 | |||
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| 1/4 |
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| 0 | 0..125 |
CFM | 610 | 477 |
BHP | 0..02 | 0..02 |
Sones | 3..8 | 2..7 |
CFM | 729 | 623 |
BHP | 0..03 | 0..04 |
Sones | 4..6 | 3..7 |
CFM | 848 | 753 |
| Static Pressure in Inches wg |
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0..25 | 0..375 | 0..5 | 0..625 | 0..75 | 0..875 |
| 1 | 1..25 | ||||
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/2593)3 |
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| MAXIMUM RPM = 1800 |
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473 |
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| TIP SPEED (ft/min) = RPM x 2.913 |
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0..04 |
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| MAXIMUM MOTOR FRAME SIZE = 56 |
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2..9 |
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654 | 481 |
1/4
VG
1000
1245
1350
1450
1555
BHP | 0..05 | 0..05 |
Sones | 5..5 | 4..8 |
CFM | 966 | 883 |
BHP | 0..07 | 0..08 |
Sones | 6..6 | 6..0 |
CFM | 1055 | 978 |
BHP | 0..10 | 0..10 |
Sones | 7..5 | 7..0 |
CFM | 1144 | 1073 |
BHP | 0..12 | 0..13 |
Sones | 8..5 | 8..1 |
CFM | 1229 | 1162 |
BHP | 0..15 | 0..16 |
Sones | 9..3 | 9..0 |
CFM | 1318 | 1255 |
BHP | 0..19 | 0..19 |
Sones | 10..2 | 10..0 |
CFM | 1407 | 1348 |
0..06 | 0..05 |
4..4 | 3..4 |
805 | 702 | 507 |
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0..09 | 0..09 | 0..08 |
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5..7 | 5..2 | 4..1 |
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908 | 824 | 715 |
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0..11 | 0..11 | 0..11 |
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6..7 | 6..3 | 5..7 |
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1006 | 938 | 851 | 731 |
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0..13 | 0..14 | 0..14 | 0..14 |
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7..8 | 7..7 | 7..2 | 6..7 |
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1099 | 1041 | 965 | 878 | 750 |
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0..16 | 0..17 | 0..17 | 0..17 | 0..17 |
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8..7 | 8..4 | 8..0 | 7..5 | 6..9 |
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1196 | 1140 | 1079 | 1005 | 917 | 791 |
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0..20 | 0..21 | 0..22 | 0..22 | 0..22 | 0..21 |
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9..7 | 9..4 | 8..9 | 8..4 | 8..0 | 7..5 |
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1292 | 1238 | 1187 | 1122 | 1050 | 963 | 841 |
1660
1/3
1800
BHP | 0..23 | 0..23 |
Sones | 11..4 | 11..1 |
CFM | 1462 | 1405 |
BHP | 0..25 | 0..26 |
Sones | 12..2 | 11..9 |
CFM | 1525 | 1471 |
BHP | 0..29 | 0..30 |
Sones | 13..3 | 12..8 |
0..24 | 0..25 | 0..26 | 0..26 | 0..26 | 0..26 | 0..25 |
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10..7 | 10..4 | 10..1 | 9..6 | 9..1 | 8..7 | 8..1 |
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1351 | 1298 | 1250 | 1193 | 1126 | 1052 | 955 |
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0..27 | 0..28 | 0..29 | 0..29 | 0..29 | 0..29 | 0..29 |
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11..5 | 11..2 | 10..9 | 10..3 | 10..0 | 9..5 | 9..0 |
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1419 | 1368 | 1321 | 1270 | 1209 | 1142 | 1065 | 793 |
0..30 | 0..31 | 0..33 | 0..33 | 0..33 | 0..33 | 0..33 | 0..30 |
12..5 | 12..4 | 12..2 | 11..4 | 10..9 | 10..6 | 10..2 | 9..3 |
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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