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Page 15

Roof Downblast - Exhaust Direct Drive

G-070G-075

1938

(492)

17

(432)

*1218

(308)

3(76)

134 (44)

Static Pressure (Pa)

 

RPM (Direct)

Density

0.075 lb/ft3

Density 1.2 kg/m3

StaticPressure(in.wg)

 

Damper Size = 8 x 8 (203 x 203)

Roof Opening = 101/2 x 101/2 (267 x 267) Shroud Thickness = 0.064 (1.6) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight = 15 lbs. (7 kg)

All dimensions in inches (millimeters).. *May be greater depending on motor..

^Weight shown is largest cataloged Open Drip-Proof motor.

Volume (cfm)

Volume (m3/hr )

Direct Drive RPM

E-1050-RPM

G-1300-RPM

D-1550-RPM

Motor

Fan

 

 

 

 

Static Pressure in Inches wg

 

 

 

 

HP

RPM

 

0

0..05

0..1

0..125

0..15

0..2

 

0..25

0..3

0..375

0..4

070

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

253

226

195

179

152

 

 

 

 

 

 

E-1/100

1050

BHP

0..01

0..01

0..01

0..01

0..01

 

 

 

 

 

 

 

 

Sones

2..7

2..1

1..7

1..5

1..2

 

 

 

 

 

 

 

 

CFM

314

292

269

257

244

214

 

171

 

 

 

G-1/60

1300

BHP

0..01

0..01

0..02

0..02

0..02

0..02

 

0..02

 

 

 

 

 

Sones

4..1

3..7

3..4

3..3

3..2

2..9

 

2..6

 

 

 

 

 

CFM

374

356

337

327

317

297

 

274

244

190

 

D-1/30

1550

BHP

0..02

0..02

0..02

0..03

0..03

0..03

 

0..03

0..03

0..03

 

 

 

Sones

5..6

5..4

5..2

5..2

5..1

4..9

 

4..7

4..5

4..1

 

075

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

297

260

222

200

176

 

 

 

 

 

 

E-1/80

1050

BHP

0..01

0..01

0..01

0..01

0..01

 

 

 

 

 

 

 

 

Sones

3..6

3..1

2..9

2..8

2..6

 

 

 

 

 

 

 

 

CFM

367

338

309

293

277

241

 

195

 

 

 

G-1/50

1300

BHP

0..02

0..02

0..02

0..02

0..02

0..02

 

0..02

 

 

 

 

 

Sones

4..1

3..9

3..7

3..7

3..7

3..6

 

3..5

 

 

 

 

 

CFM

438

413

389

377

364

337

 

309

277

214

 

D-1/25

1550

BHP

0..03

0..03

0..3

0..04

0..04

0..04

 

0..04

0..04

0..03

 

 

 

Sones

6..1

5..8

5..6

5..4

5..3

5..1

 

4..9

4..9

4..8

 

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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Contents Centrifugal Roof Downblast Exhaust Fans Models G and GB Codes and CertificationsModel Comparison Models G and GB Construction FeaturesModel GB Belt Drive Seismic G and GB Problems after a seismic eventApplications Emergency Smoke Control GBHigh Wind and Hurricane G and GB Hypothetical Constant Volume Load ShapeOptions Vari-GreenMotor Model GDemand Control Ventilation Vari-GreenControlsRoof Curbs Options and AccessoriesSpeed Controllers for Standard Motors Typical Installations General Clean Air figureWheel Rotation GB 240 HP VG/5/A Fan Inlet ConnectionsModel Number Code Roof Downblast Exhaust Direct Drive 060 G-065RPM 070 G-075 080 G-085 090 G-095 Maximum Motor Frame Size = Roof Downblast Exhaust Belt & Direct DriveGB-071 G-097 Maximum BHP AT a Given RPM = RPM/33713Maximum BHP AT a Given RPM = RPM/29853 GB-081 G-098Maximum BHP AT a Given RPM = RPM/27033 GB-091 G-099Maximum BHP AT a Given RPM = RPM/25933 Maximum RPM = GB-101 G-103Maximum BHP AT a Given RPM = RPM/31653 GB-101HP G-103HPMaximum BHP AT a Given RPM = RPM/21703 Maximum RPM = GB-121 G-123Maximum BHP AT a Given RPM = RPM/20473 GB-131 G-133GB-141 G-143 Maximum BHP AT a Given RPM = RPM/16763Maximum Motor Frame Size = 145T Maximum BHP AT a Given RPM = RPM/23513 GB-141HP G-143HPMaximum BHP AT a Given RPM = RPM/1355 GB-161 G-163Roof Downblast BeltExhaustDrive SizeBelt-Drive GB H-GB GB-161HPMaximum BHP AT a Given RPM = RPM/1708 GB-180 G-183 Maximum BHP AT a Given RPM = RPM/1149Maximum Motor Frame Size = 184T Roof Downblast Exhaust Belt Drive GB-180HPMaximum BHP AT a Given RPM = RPM/1325 Maximum BHP AT a Given RPM = RPM/938 GB-200 G-203Maximum BHP AT a Given RPM = RPM/1106 GB-220HPMaximum BHP AT a Given RPM = RPM/782 GB-220Maximum BHP AT a Given RPM = RPM/838 Maximum BHP AT a Given RPM = RPM/715 GB-240Maximum BHP AT a Given RPM = RPM/845 GB-240HPMaximum BHP AT a Given RPM = RPM/572 GB-260Maximum BHP AT a Given RPM = RPM/517 GB-300Maximum BHP AT a Given RPM = RPM/613 GB-300HPGB-330 Maximum BHP AT a Given RPM = RPM/405Maximum Motor Frame Size = 215T Maximum BHP AT a Given RPM = RPM/394 GB-360Maximum BHP AT a Given RPM = RPM/431 GB-360HPGB-420 Maximum BHP AT a Given RPM = RPM/245 GB-480Maximum Motor Frame Size = 256T GB-500Maximum BHP AT a Given RPM = RPM/202 GB-540Specifications Vari-GreenMotor SpecificationVari-GreenControls Specification Model G Direct Drive SpecificationsHigh Wind Specifications Direct Drive, Severe Duty SpecificationsModel GB Belt Drive SpecificationsSmoke Control Specifications Belt Drive, Severe Duty Specifications123 071-091097 5-10 101 101HP 5-10 103HP 121