Greenheck Fan Series L manual Lb/Lbp, Belt Drive, LB Dimensions, LBP Dimensions, LB-21, LBP-21

LB/LBP 21

Belt Drive

LB Dimensions

2.0

43

(1092)

13⁄4	30
(44)	(762)

23	51
	(1295)
(584)
			23	Pa
		6		PressureStatic
			(584)
	30	(152)
	(762)

1

E

1/2

2

RPM

V

hp

R

hp

HP

1

U

400

hp

C

Density 0.075 lb/ft3

M

1.5

E

T

wg

S

3/4

Y

1/2

hp

S

in.

S

hp

300

I

H

1200

Pressure

T

F

1.0

1/3

O

1/4

hp

T

1053

F

hp

E

200

E

L

906

Static

H

T

O

T

T

759

0.5

100

C

E

L

612

S

T

465

O

N

O

D

LBP Dimensions

0	0.00	1000	2000	3000	4000	5000	6000	7000	8000
					cfm

36

(914)

13⁄4	30
(44)	(762)

46

19(1168)

(483)

30

(762)

241⁄2

(622)

0	2	4	6	8	10	12
			m3/hr X 1000

	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	201⁄2 (521)	201⁄2 (521)
Weight*	Galvanized,	Aluminum,
	145 (66)	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.

Model	Motor	Fan					CFM / Static Pressure in Inches wg
Number	HP	RPM		0	0.25	0.375	0.5	0.625		0.75	1	1.25	1.5	1.75
		465	CFM	2820	1732
			BHP	0.12	0.13				MAX. BHP AT A GIVEN RPM - (rpm/910)3
LB/LBP-21-4	1/4		Sones	6.6	5.2				MAXIMUM FRPM = 1200
									TIP SPEED = rpm x 5.596
			CFM	3609	2938	2457
									MAX. MOTOR FRAME SIZE = 145T
		595	BHP	0.24	0.28	0.28
			Sones	8.8	7.8	6.9
			CFM	3948	3371	2970	2354
LB/LBP-21-3	1/3	651	BHP	0.32	0.36	0.36	0.34
			Sones	10.1	8.8	8.2	6.9
			CFM	4239	3724	3362	2954	1964
		699	BHP	0.39	0.44	0.45	0.45	0.38
LB/LBP-21-5	1/2		Sones	11.6	9.9	9.3	8.6	7.1
			CFM	4531	4056	3741	3390	2909
		747	BHP	0.48	0.53	0.54	0.55	0.53
			Sones	13.4	11.2	10.4	9.8	9.1
			CFM	4858	4424	4157	3833	3491		2937
		801	BHP	0.59	0.65	0.66	0.67	0.68		0.64
LB/LBP-21-7	3/4		Sones	15.5	12.9	11.8	11.3	10.8		10.1
			CFM	5186	4790	4553	4261	3954		3608
		855	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
			CFM	5452	5087	4858	4602	4313		4019	2894
LB/LBP-21-10	1	899	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
			CFM	6126	5826	5614	5415	5183		4926	4386	3369
		1010	BHP	1.18	1.26	1.3	1.32	1.34		1.35	1.36	1.24
LB/LBP-21-15	11⁄2		Sones	20	18.9	18.1	17.3	16.6		16.2	15.0	14.0
			CFM	6532	6260	6068	5877	5691		5451	4965	4395
		1077	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
			CFM	7278	7034	6890	6712	6542		6375	5954	5517	5013	4122
LB/LBP-21-20	2	1200	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

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.

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