Lb/lbp 21 belt drive, Lb dimensions lbp dimensions – Greenheck Fan Series L User Manual
Page 16
16
LB Dimensions
LBP Dimensions
1
3
⁄
4
(44)
1
3
⁄
4
(44)
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 in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
LB/LBP 21
Belt Drive
0
2
4
6
8
10
12
0
100
200
300
400
DO
N
OT
S
EL
EC
T
TO
T
H
E
LE
FT
O
F
TH
IS
S
Y
S
TE
M
C
U
R
V
E
0
1000
2000
3000
4000
5000
6000
7000
8000
0.0
0.5
1.0
1.5
2.0
Static Pr
essur
e in. wg
cfm
m
3
/hr X 1000
Static Pr
essur
e Pa
1200
1053
906
612
465
1 1/2 hp
1/4 hp
1/3 hp
1/2 hp
3/4 hp
1 hp
2 hp
RPM
HP
Density 0.075 lb/ft
3
759
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0
0.25
0.375
0.5
0.625
0.75
1
1.25
1.5
1.75
LB/LBP-21-4
1/4
465
CFM
2820
1732
BHP
0.12
0.13
Sones
6.6
5.2
595
CFM
3609
2938
2457
BHP
0.24
0.28
0.28
Sones
8.8
7.8
6.9
LB/LBP-21-3
1/3
651
CFM
3948
3371
2970
2354
BHP
0.32
0.36
0.36
0.34
Sones
10.1
8.8
8.2
6.9
LB/LBP-21-5
1/2
699
CFM
4239
3724
3362
2954
1964
BHP
0.39
0.44
0.45
0.45
0.38
Sones
11.6
9.9
9.3
8.6
7.1
747
CFM
4531
4056
3741
3390
2909
BHP
0.48
0.53
0.54
0.55
0.53
Sones
13.4
11.2
10.4
9.8
9.1
LB/LBP-21-7
3/4
801
CFM
4858
4424
4157
3833
3491
2937
BHP
0.59
0.65
0.66
0.67
0.68
0.64
Sones
15.5
12.9
11.8
11.3
10.8
10.1
855
CFM
5186
4790
4553
4261
3954
3608
BHP
0.72
0.79
0.8
0.81
0.82
0.82
Sones
16.7
14.4
13.3
12.8
12.1
11.5
LB/LBP-21-10
1
899
CFM
5452
5087
4858
4602
4313
4019
2894
BHP
0.83
0.91
0.93
0.94
0.95
0.96
0.86
Sones
17.1
15.4
14.5
13.9
13.4
12.7
11.7
LB/LBP-21-15
1
1
⁄
2
1010
CFM
6126
5826
5614
5415
5183
4926
4386
3369
BHP
1.18
1.26
1.3
1.32
1.34
1.35
1.36
1.24
Sones
20
18.9
18.1
17.3
16.6
16.2
15.0
14.0
1077
CFM
6532
6260
6068
5877
5691
5451
4965
4395
BHP
1.43
1.52
1.56
1.59
1.61
1.62
1.65
1.63
Sones
22
21
20
19.4
18.8
18.2
17.3
16.4
LB/LBP-21-20
2
1200
CFM
7278
7034
6890
6712
6542
6375
5954
5517
5013
4122
BHP
1.98
2.07
2.12
2.18
2.2
2.22
2.25
2.28
2.26
2.11
Sones
26
25
25
24
23
23
22
21
20
18.5
MAX. BHP AT A GIVEN RPM - (rpm/910)
3
MAXIMUM FRPM = 1200
TIP SPEED = rpm x 5.596
MAX. MOTOR FRAME SIZE = 145T
30
(762)
51
(1295)
23
(584)
23
(584)
6
(152)
36
(914)
46
(1168)
24
1
⁄
2
(622)
19
(483)
43
(1092)
30
(762)
30
(762)
30
(762)
LB-21
LBP-21
Hood Thickness
22 ga
-
Cover Thickness
-
0.064
(0.029)
Louver Thickness
-
0.081
(0.036)
Curb Cap Thickness 0.064
(0.029)
0.064
(0.029)
Damper Size Square
18
(457)
18
(457)
Roof Opening Square
20
1
⁄
2
(521)
20
1
⁄
2
(521)
Weight*
Galvanized,
145
(66)
Aluminum,
191
(86)
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.