Sb-20 Belt Drive - Greenheck SE-1 Manual

Page Header Belt Drive
Using The Performance Table
Shown below is a portion of a typical performance table used in this catalog. Performance data shown
offers the best selections for each propeller type ("L" or "H") relative to sound, RPM and static pressure.
Consider "L" type propellers first for most applications.
Many sidewall applications can be met with the "L" type propeller. When using the performance
tables, look first at the "L" selections, because they offer the lowest speed and sound levels.
Model Number
Level 1 Performance
SB-1L20-4
"L" type
low pressure
SB-1H20-4
propeller
"H" type SB-1L20-3
high pressure
propeller
SB-1H20-3
SB-1L20-5
SB-1H20-5
Shows level of
construction based on fan
RPM & motor frame size.
See Performance Charts.

SB-20 Belt Drive

Motor Fan
Model Number
HP RPM
Level 1 Performance Max RPM L - 1085 H - 1221
705
810
SB-1L20-4 1/4
861
773
SB-1H20-4 1/4 892
953
889
SB-1L20-3 1/3
947
998
SB-1H20-3 1/3
1039
1021
SB-1L20-5 1/2
1085
1107
SB-1H20-5 1/2
1221
Level 2 Performance Max RPM L - 1241 H - 1391
1021
SB-2L20-5 1/2
1085
1107
SB-2H20-5 1/2
1221
1168
SB-2L20-7 3/4
1241
1262
SB-2H20-7 3/4
1391
Performance certified is for Model SB for installation type A: free inlet, free outlet . Power rating (Bhp) does not include transmission losses . Performance ratings do not include
the effects of appurtenances (accessories) . The sound ratings shown are loudness values in fan sones at 5 ft (1 .5 m) in a hemispherical free field calculated per AMCA Standard 301 .
Values are for installation type A: free inlet hemispherical sone levels . *Sones shown apply to the highest cataloged CFM in black type at each fan RPM. For selections at other CFM and static
pressure points, refer to CAPS, the Computer Aided Product Selection Program.
Motor Fan Max
BHP *Sones
HP RPM
0.00
Max RPM L - 1085 H - 1221
705 0.17 11.6 3606 2836
1/4 810 0.25 13.3 4143 3510
861 0.30 14.3 4404 3795
773 0.17 11.1 2904 2453
1/4 892 0.27 14.1 3351 2987
953 0.30 16.2 3581 3247
889 0.33 14.9 4547
1/3
947 0.40 16.1 4844
998 0.37 16.7 3750
1/3
1039 0.40 17.2 3904
1021 0.50 17.0 5222
1/2
1085 0.60 17.9 5550
1107 0.50 18.0 4159
1/2
1221 0.60 20 4587
Note that each max. Optimum selection range
Bhp is cataloged at for the "L" type propeller.
a 1.0 and 1.2 service
factor. See page 13.
Max
*Sones
BHP
0.00 0.10
0.17 11.6 3606 2836
0.25 13.3 4143 3510
0.30 14.3 4404 3795
0.17 11.1 2904 2453
0.27 14.1 3351 2987
0.30 16.2 3581 3247
0.33 14.9 4547 3950
0.40 16.1 4844 4271
0.37 16.7 3750 3436
0.40 17.2 3904 3608
0.50 17.0 5222 4675
0.60 17.9 5550 5021
0.50 18.0 4159 3885
0.60 20 4587 4339
0.50 17.0 5222 4675
0.60 17.9 5550 5021
0.50 18.0 4159 3885
0.60 20 4587 4339
0.75 20 5974 5466
0.90 22 6348 5853
0.75 21 4742 4501
0.90 25 5226 5008
CFM / Static Pressure in Inches WG
0.10 0.125 0.15 0.20 0.25 0.30
Max Motor Frame Size - 56
2451
3325 3084
3672 3455
2293 2112 1596 924 676
2873 2744 2436 2011 1409
3148 3034 2769 2469 2002
3950 3830 3655 3067
4271 4156 4044 3648
3436 3342 3244 3006 2727 2398
3608 3517 3427 3212 2954 2676
4675 4566 4461 4181 3747
5021 4919 4817 4621 4269 3712
3885 3805 3720 3534 3315 3065
4339 4277 4203 4049 3873 3675
CFM / Static Pressure in Inches WG
0.125 0.15 0.20 0.25
Max Motor Frame Size - 56
2451
3325 3084
3672 3455
2293 2112 1596 924
2873 2744 2436 2011 1409
3148 3034 2769 2469 2002
3830 3655 3067
4156 4044 3648
3342 3244 3006 2727 2398
3517 3427 3212 2954 2676
4566 4461 4181 3747
4919 4817 4621 4269 3712
3805 3720 3534 3315 3065
4277 4203 4049 3873 3675
Max Motor Frame Size - 143T
4566 4461 4181 3747
4919 4817 4621 4269 3712
3805 3720 3534 3315 3065
4277 4203 4049 3873 3675
5371 5275 5090 4861 4527
5764 5674 5496 5325 5053
4441 4375 4226 4065 3883
4954 4899 4774 4639 4493
0.375 0.50 0.625 0.75 1.00
TS = RPM x 5.235
CFM values
shown in
black are the
304 most efficient
selections.
886 348
Values shown
1160 657
in gray are not
recommended.
1588 873 393
2037 1064 603
2599 1368 935 502
3333 2514 1456 1064
Optimum selection range
for the "H" type propeller.
0.30 0.375 0.50 0.625 0.75
TS = RPM x 5.235
CFM values shown in black are the
most efficient selections. Values shown
in gray are not recommended.
676 304
886 348
1160 657
1588 873 393
2037 1064 603
2599 1368 935 502
3333 2514 1456 1064
TS = RPM x 5.235
2599 1368 935 502
3333 2514 1456 1064
4479
3562 2849 1635 1255
4244 3741 3005 1886
1.00
495
1138
29