Greenheck’s Series L, low silhouette, models LD, LB, LDP, and LBP centrifugal roof exhaust fans
provide the industry’s best performance and durability for general clean air applications.
• Broadest performance in the industry, up to 1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m
• Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory,
and all models are licensed to bear the AMCA sound and air performance seals.
• UL Listed for electrical.*
• Greenheck subjects these products to extensive life testing, assuring you the fans will provide
years of reliable performance.
Greenheck Fan Corporation certifies the
models LD, LDP, LB, and LBP shown
herein are licensed to bear the AMCA
seal. The ratings shown are based on
tests and procedures performed in
accordance with AMCA Publication 211
and AMCA Publication 311 and comply
with the requirements of the AMCA
Certified Ratings Program.
*UL is optional and must be specified.
Models LD, LDP, LB, and LBP are
listed for electrical (UL/cUL 705)
File no. E40001.
3
/hr).
Leading Edge Technical Support
When you need extensive product or installation and operating manual (IOM)
information, our products are supported by the industry’s best product literature,
electronic media and computer aided product selection (CAPS) program. You’ll
also find this information on our website at www.greenheck.com
You can always count on personal service and expertise from our national and
international representative organization. To locate your nearest Greenheck
representative, call 715-359-6171 or visit our website at www.greenheck.com
Quick Build Programs
Our Quick Build (QB) Program ensures rapid response time when your needs
require a fast turnaround. Select from more than 40 configurations of the
Series L, low silhouette model fan and we will manufacture and ship them
within ten days. We have strategically located many warehouses across the
United States and internationally to fill your request at a moments notice.
World Class Manufacturing
Greenheck’s skilled production workers use cost-effective machines and
unique dies designed and built by our own engineers to add innovative
features and greater strength to our centrifugal roof exhaust fans. Our
advanced manufacturing processes and quality control procedures
always ensure the highest product quality. And just to be sure you
get the peace-of-mind you expect when you specify Greenheck, our
assembly inspectors test run and monitor every fan before it leaves the
factory. Results of these tests are kept in permanent records for future
reference.
2
Page 3
Unique Construction Features
Louvered Penthouse Style
• Hinged Cover - All sizes feature an
aluminum cover which may be hinged to provide quick access to the motor and drive assembly. Covers are fastened down with a quick release hood latch.
• Large Interior Dimensions - All sizes allow
complete accessibility from above. Interior dimensions offer clearance for inspection, cleaning, or maintenance of the motor, wheel, belt(s), and drives.
• Strength & Weather Resistant - Each unit
features storm resistant aluminum louver blades with mitered corners. For decades, our storm resistant blades have proven highly effective. Each sturdy extruded aluminum louver blade has a material thickness of 0.080 inches.
Greenheck’s louvered penthouse hoods feature heavy gauge extruded aluminum louvers with mitered corners for a clean, finished appearance and weather resistant construction.
The interior vertical edge of the curb cap forms the throat and weathershield. Each corner is also shielded to prevent leakage.
Penthouses are available in aluminum for lasting durability and appearance.
Fabra Hood Style
• Hinged Hood - All sizes feature a hood
which may be hinged to provide quick access to the motor and drive assembly. Access may be gained by simply removing two of the four hood fasteners or all fasteners for complete removal.
• Large Interior Dimensions - All sizes allow
complete accessibility. Interior dimensions offer clearance for inspection, cleaning, or maintenance of the motor, wheel, belt(s), and drives.
• Strength & Weather Resistance - The
hood is designed with arched panels manufactured of heavy gauge, precision roll formed steel with interlocking edges. Each interlocking rib creates a tight, weather resistant seal. Heavy gauge steel support members provide structural strength. The first hood was put into service over 30years ago.
Greenheck’s interlocking rib design combines four material thicknesses with I-beam design principles producing a hood far superior in strength to conventional designs (an important feature in high wind and snow load regions).
Formed channels adjacent to the ribs provide water drainage to ensure weather tightness.
Hoods are available in galvanized steel, coated steel, or aluminum construction.
3
Page 4
1
6
10
5
12
2
9
15
13
13
11
14
LB/LD
8
4
6
10
11
7
Fabra Hood Style
5
9
3
LBP/LDP
Louvered Penthouse Style
4
Page 5
Unique Construction Features
Recommended
Duct and
Damper Size
Recommended
Roof Opening
1 1/4 in.
(32 mm)
3/4 in.
(19 mm)
Damper
8 to 12 in.
(203 to 305 mm)
1 1/4 in.
(32 mm)
1
FABRA HOOD STYLE - Models LD and LB have
a rib-lock galvanized housing. Hood panels are
interlocked and attached to sturdy galvanized
rails. (Aluminum housings are optional).
HINGED ACCESS - The entire hood assembly
2
on models LD and LB can be hinged open for
access to the internal fan components.
LOUVERED PENTHOUSE - Models LDP and
3
LBP penthouse style housings are constructed
of heavy extruded aluminum louvers with
mitered and welded corners.
HOOD COVER - Models LDP and LBP
4
aluminum hood covers are hinged and
removable for access.
DRIVE FRAME - Constructed from heavy
5
gauge galvanized steel. Belt adjustment is
accomplished by loosening fasteners, sliding
the motor plate, and retightening fasteners.
FAN SHAFT - Precisely sized, ground, and
6
polished so the first critical speed is at least
25% over the maximum operating speed. Close
tolerances between the shaft and bearing result
in longer bearing life.
BEARINGS - 100% factory tested and designed
7
specifically for air handling applications with
a minimum L10 life in excess of 100,000 hours
(L50 average life of 500,000 hours).
CURB CAP - Curb cap has prepunched
8
mounting holes to ensure correct attachment to
the curb.
9
MOTOR - All motors are carefully matched to
the fan load to provide years of trouble free
operation.
DRIVE ASSEMBLY - Drives are oversized 150%
10
of driven horsepower. Machined cast iron
pulleys are factory set to the required RPM and
are adjustable for final system balancing. Belts
are static free and oil resistant.
11
WHEEL - An aluminum, backward inclined,
non-overloading, centrifugal wheel is utilized
to deliver maximum efficiency. Each wheel is
statically and dynamically balanced.
VIBRATION ISOLATORS - Support the drive
12
assembly and wheel without steel to steel
contact providing long life and quiet operation.
BIRDSCREEN - Galvanized rigid wire protects
13
the fan’s discharge from birds or small objects.
(Aluminum birdscreen is optional).
WINDBAND - Lower windband assembly
14
ensures weathertight and rigid unit
construction.
DISCONNECT SWITCH - NEMA-1 switch is
15
factory mounted. Wiring from the motor to the
disconnect enclosure is provided as standard.
All wiring and electrical components comply
with the National Electric Codes (NEC) and are
UL Listed or Recognized.
CONDUIT CHASE - A large diameter conduit for
16
installing electrical wiring through the curb cap
into the motor compartment. (Not shown)
Standard Installation
Models LB, LD, LBP, and LDP exhaust fans are designed
to meet the needs of general clean air applications. Tests
have been conducted to ensure safe and reliable fans
capable of withstanding normal exhaust conditions.
When roofing materials extend to the top of the curb,
roof curbs should be 11⁄2 in. (38 mm) (3/4 in. (19 mm) on
a side) less than the unit curb cap to allow for roofing
and flashing.
For recommended duct size, damper size, and
roof opening dimensions, refer to CAPS or the
performance data pages.
Installation must include a means for inspecting,
cleaning, and servicing the exhaust fan.
Due to the varying airstreams encountered in
commercial ventilation, system designers must
be aware of national, state, and local codes and
guidelines governing these installations. Local code
authorities should be consulted before proceeding
with any ventilation project.
5
Page 6
Options and Accessories
BIRDSCREEN - Galvanized mesh is standard.
Optional aluminum or stainless steel rigid wire are
also available.
HOOD INSULATION - Hood insulation is dual-
density to minimize condensation, reduce thermal
transfer, and enhance sound absorption at high and
low frequencies.
LIFTING LUGS - Four heavy gauge steel brackets
are available to provide lifting points when raising
the fan to the roof.
TIE DOWN POINTS - Four heavy gauge steel
brackets are available to secure the fan in heavy
wind applications. Cables and anchors by others.
COATINGS - All Greenheck coatings and resistance
charts can be found in the performance coatings
catalog. A wide variety of coatings and colors are
available in two categories:
Decorative coatings – Sixteen standard colors
are available.
Protective coatings – Five electrostatic applied
powder coatings are available to protect against
most environments.
DAMPERS - Designed to
prevent outside air from
entering back into the building
when fan is off. Options include
gravity and motorized dampers.
Damper sizes are shown on
each performance data page.
CURB SEAL - Rubber seal between fan and curb
to ensure proper sealing when attached to a curb.
DISCONNECT SWITCHES -
A wide selection of NEMA
rated switches are available
for positive electrical shutoff
and safety, including: dusttight, rainproof, and corrosionresistant. Switches may be
internally or externally mounted.
SPEED CONTROLLERS - Available for use with
shaded pole and permanent split capacitor (PSC)
open motors on models LD and LDP fans. They
provide an economical means of system balancing
with direct drive fans.
CURB EXTENSIONS - Extensions raise the fan
discharge above the roof line and provide an
accessible mounting location for dampers.
Insect screen bases
constructed with
a removable
fine mesh are
recommended for
applications where insect
entry must be prevented. Curb
extensions are not available with LDP and
LBP severe duty construction models.
ROOF CURBS - Prefabricated roof curbs reduce
installation time and costs by ensuring compatibility
between the fan, curb and roof opening. All curbs
are insulated with fiberglass.
A wide variety of roof curbs
are available including
flanged, pitched and
sound-absorbing.
6
Page 7
Severe Duty Option
OUTSIDE CURB DIMENSION
ROOF OPENING
12, 18 OR 24 INCHES
(305, 457, 610 MM)
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
6 INCH x 3 INCH
(152 MM x 76 MM)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
RECOMMENDED
DUCT & DAMPER SIZE
1-1/4 INCH
(32 MM)
4 IN.
(102 MM)
1-3/4 INCH (44 MM)
3/4 INCH (19 MM)
4 IN.
(102 MM)
4 IN.
(102 MM)
4 IN
(102 MM)
1-3/4 INCH
(44 MM)
2-1/2 INCH (64 MM)
2-1/2 INCH
(64 MM)
1-3/4 INCH (44 MM)
CONCRETE
ROOF TRUSS
CORRUGATED
ROOF DECK
SEVERE DUTY - Specifically designed for applications with extremely
high structural design load requirements. The severe duty models LDP
and LBP are far superior to any centrifugal roof exhaust fan currently
in the market. Designed with structural steel supports and ESD-603D
louver blades, the severe duty louver enclosure (SDLE) may be used
in any application which requires a fan to endure high winds with the
potential of wind blown debris. The louvered housing has been tested
in accordance with the following Miami-Dade test protocols:
• Large Missile Impact Test - TAS-201-94
• Uniform Static Air Pressure - TAS-202-94
• Uniform Cyclic Wind Loading - TAS-203-94
To meet the above protocols, the severe duty fan must be mounted
on a severe duty roof curb, which is attached directly to the building
structure. Maximum design load is 140 psf.
Available on sizes
• LDP - 60 though 120
• LBP - 10 through 30
Weights and dimensions will vary from standard LDP and LBP construction.
NOTICE OF ACCEPTANCE
NUMBER 08-0429.05
Severe Duty Installation
Models LDP and LBP severe duty exhaust fans are designed to meet the needs of general clean
air applications. Tests have been conducted to ensure safe, rugged and reliable fans capable of
withstanding severe exhaust conditions.
The severe duty roof curb model SD is
supplied with this product and is designed
with 12 gauge welded steel construction.
Greenheck recommends the severe duty curb
to be anchored to the structure of the building.
Dependent upon roofing material it shall be
bolted and welded. For recommended duct
size, refer to CAPS or installation manual.
Installation must include a means for
inspecting, cleaning, and servicing the
exhaust fan.
Due to the varying airstreams encountered
in commercial ventilation, system designers
must be aware of national, state, and local
codes and guidelines governing these
installations. Local code authorities should
be consulted before proceeding with any
ventilation project.
7
Page 8
Severe Duty Dimensions
LDP - SEVERE DUTY DIMENSIONS
B
C
D
E
A
A
LBP - SEVERE DUTY DIMENSIONS
CB
D
E
AA
Model
Number
ABCDE
Damper
Size
(square)
60
65
17
70
(432)
347⁄8
(886)
347⁄8
(886)
175⁄8
(448)
13⁄4
(44)
8
(203)
75
LDP
80
85
90
19
(483)
367⁄8
(934)
367⁄8
(934)
175⁄8
(448)
13⁄4
(44)
10
(254)
95
LBP
100
120
10
14
18
21
24
30
(559)
(559)
(660)
(762)
(864)
(1016)
22
22
26
30
34
40
397⁄8
(1013)
397⁄8
(1013)
437⁄8
(1114)
477⁄8
(1216)
517⁄8
(1318)
577⁄8
(1470)
397⁄8
(1013)
503⁄8
(1280)
517⁄8
(1318)
577⁄8
(1470)
617⁄8
(1572)
697⁄8
(1775)
195⁄8
(498)
181⁄8
(460)
181⁄8
(460)
245⁄8
(625)
245⁄8
(625)
271⁄4
(692)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
12
(305)
12
(305)
16
(406)
18
(457)
24
(610)
30
(762)
All dimensions are in inches (millimeters). Weight in pounds (kilograms). *Weight shown is the largest cataloged Open Drip Proof motor.
Roof
Opening
(square)
101⁄2
(267)
121⁄2
(318)
141⁄2
(368)
101⁄2
(267)
101⁄2
(267)
101⁄2
(267)
1
⁄2
10
(267)
101⁄2
(267)
101⁄2
(267)
Weight*
375
(170)
400
(181)
425
(193)
550
(249)
550
(249)
550
(249)
700
(318)
800
(363)
950
(431)
Cover
Thickness
0.100
(0.045)
aluminum
0.100
(0.045)
aluminum
Louver
Thickness
0.125
(0.056)
aluminum
0.125
(0.056)
aluminum
Curb Cap
Thickness
0.25
(0.113)
steel
0.25
(0.113)
steel
8
Page 9
Severe Duty Curb
Installation Options
Concrete
Steel
12, 18, OR 24 INCHES
(305, 457, or 610 MM)
MINIMUM CONCRETE
STRENGTH OF 3000 PSI
4 INCH (102 MM)
MOUNTING FLANGE
CURB HEIGHT
12, 18, OR 24 INCHES
(305, 457, 610 MM)
1.75 INCH (44 MM)
CURB HEIGHT
TYPICAL
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES (89 MM)
1.75 INCH
(44 MM)
4 INCH (102 MM)
MOUNTING FLANGE
TYPICAL
OUTSIDE CURB DIMENSION
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
ROOF OPENING
1.75 INCH (44 MM)
OUTSIDE FLANGE DIMENSION
OUTSIDE CURB DIMENSION
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
ROOF OPENING
6 X 3 INCH (152 x 76 mm)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
1.75 INCH (44 MM)
HILTI KB11, 3/8-16 X 3 ON
12 INCH (305 MM) MAXIMUM CENTERS.
MINIMUM TWO PER SIDE.
2.5 INCH (57 MM)
EMBEDMENT
2.25 INCH (57 MM) TYPICAL
4 INCH (102 MM) TYPICAL
1.75 INCH (44 MM)
HILTI KWIK-FLEX 12-14 SCREW, NO. 3 POINT.
THREE (3) FASTENERS EACH CORNER AND
MAXIMUM OF 4.5 INCHES
ADD ADDITIONAL FASTENERS TO SATISFY.
CORNER TOP VIEW
(114 mm) SPACING;
CORRUGATED
ROOF DECK
ROOF TRUSS
OUTSIDE FLANGE DIMENSION
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES
1.75 INCH (44 MM)
2.25 INCH
4 INCH
(89 MM)
(57 MM) TYPICAL
(102 MM) TYPICAL
Model Number Code
The model number system is designed to completely identify the fan. The correct code letters must be
specified to designate belt or direct drive. The remainder of the model number is determined by the size
and performance selected from the following pages.
LB - 30 - 7
Model
LD - Fabra Hood Direct Drive
LB - Fabra Hood Belt Drive
LDP - Louvered Penthouse Direct Drive
LBP - Louvered Penthouse Belt Drive
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 LDP dimensions.
Galvanized
(17)
37
2
(51)
13
(330)
131⁄2
(343)
Static Pressure Pa
Static Pressure Pa
0.6
140
0.5
120
100
0.4
80
0.3
60
0.2
40
Static Pressure in. wg
0.1
20
0
0.0
050100150200250300
050 100 150 200 250 300 350 400 450 500
0.6
140
0.5
120
100
0.4
80
0.3
60
0.2
40
Static Pressure in. wg
0.1
20
0.0
0
050100150200250300350400
0100200300400500600
Size 60 and 65
LD/LDP-65
LD/LDP-60
cfm
3
/hr
m
Size 70 and 75
LD/LDP-70
cfm
3
m
/hr
RPM
Density 0.075 lb/ft
RPM
Density 0.075 lb/ft
LD/LDP-75
3
3
Model
Number
LD/LDP-601/601590*51 W
LD/LDP-651/301680*70 W
LD/LDP-701/301665*73 W
LD/LDP-751/251620*79 W
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.
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 LDP dimensions.
Galvanized
(20)
45
4
(102)
16
(406)
161⁄2
(419)
Static Pressure Pa
Static Pressure Pa
160
140
120
100
0.7
0.6
0.5
0.4
80
0.3
60
0.2
Static Pressure in. wg
40
0.1
20
0.0
0
0100200300400500600
02004006008001000
0.9
220
200
0.8
180
0.7
160
0.6
140
0.5
120
100
0.4
80
0.3
60
Static Pressure in. wg
0.2
40
0.1
20
0.0
0
020040060080010001200
0200 400 600 800 1000 1200 1400 1600 1800 2000
Size 80 and 85
LD/LDP-80
LD/LDP-85
cfm
m3/hr
Size 90 and 95
LD/LDP-95
LD/LDP-90
cfm
3
m
/hr
RPM
Density 0.075 lb/ft
RPM
Density 0.075 lb/ft
3
3
Model
Number
LD/LDP-801/201550* 115 W
LD/LDP-851/201500* 120 W
LD/LDP-901/151550*92 W
LD/LDP-951/81550* 160 W
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.
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 LDP dimensions.
Galvanized
(26)
57
1.1
250
1.0
0.9
200
0.8
18
(457)
4
Static Pressure Pa
181⁄2
0.7
150
0.6
0.5
100
0.4
0.3
Static Pressure in. wg
50
0.2
0.1
0
0.0
02004006008001000 1200 1400 1600
05001000150020002500
1.2
T
T
C
E
L
E
S
T
O
N
O
D
(470)
250
1.0
200
0.8
150
0.6
100
Static Pressure Pa
0.4
Static Pressure in. wg
50
0.2
0
0.0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
050010001500200025003000
T
T
C
E
L
E
S
T
O
N
O
D
Size 100
E
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
T
O
860
1140
cfm
m
3
/hr
RPM
Density 0.075 lb/ft
1725
3
Size 120
E
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
T
O
1140
860
cfm
3
/hr
m
RPM
Density 0.075 lb/ft
1725
3
Model
Number
Motor HPFan
RPM
00.1250.20.250.3750.50.6250.750.8750.9
CFM / Static Pressure in Inches wg
CFM766568407
LD/LDP-100-C1/8860
BHP0.0220.0290.028
Sones6.35.35.1
CFM1016879780709493
LD/LDP-100-B1/61140
BHP0.0510.0650.0680.0680.066
Sones12.011.010.610.410.4
CFM1538145713991360125611421024891724678
LD/LDP-100-A1/41725
BHP0.180.210.220.220.230.240.240.230.230.22
Sones16.214.814.414.214.314.214.815.315.916.1
CFM921702536
LD/LDP-120-C1/8860
BHP0.030.0410.043
Sones6.65.35.1
CFM12211072960886664
LD/LDP-120-B1/61140
BHP0.0710.0860.0940.0960.099
Sones11.910.910.310.09.2
CFM18481762169316521540141212861142979940
LD/LDP-120-A1/41725
BHP0.250.280.290.290.310.330.340.350.340.33
Sones2119.619.419.318.618.418.218.218.318.3
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 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.
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.
Galvanized
(25)
56
RPM
HP
Density 0.075 lb/ft
1767
1534
Aluminum
99 (45)
3
Model
Number
Motor HPFan
RPM
600
712
00.1250.250.3750.50.6250.750.87511.125
CFM539351
BHP0.0130.014
Sones3.01.6
CFM639500
BHP0.0210.024
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/2476)
MAXIMUM FRPM = 1767
TIP SPEED = rpm x 2.913
MAX. MOTOR FRAME SIZE = 56
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.
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.
Galvanized
(37)
81
RPM
HP
Density 0.075 lb/ft
1343
Aluminum
116 (53)
3
Model
Number
Motor HPFan
RPM
00.1250.250.3750.50.6250.750.87511.125
CFM / Static Pressure in Inches wg
CFM903614
480
564
BHP0.0220.025
Sones4.13.2
CFM1061848
BHP0.0350.041
MAX. BHP AT A GIVEN RPM - (rpm/1639)
MAXIMUM FRPM = 1343
TIP SPEED = rpm x 3.829
MAX. MOTOR FRAME SIZE = 56
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.
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.
Galvanized
(61)
135
RPM
HP
Density 0.075 lb/ft
1460
Aluminum
179 (81)
3
Model
Motor HPFan
Number
LB/LBP-18-41/4
RPM
465
562
00.1250.250.50.7511.251.51.752
CFM17531422
BHP0.0560.064
Sones3.62.7
CFM211918711522
BHP0.0990.1080.114
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/1157)
MAXIMUM FRPM = 1460
TIP SPEED = rpm x 4.843
MAX. MOTOR FRAME SIZE = 145T
3
Sones4.94.13.4
CFM2847267124741925
755
BHP0.240.250.270.27
Sones8.77.97.46.5
CFM3115295727782324
LB/LBP-18-31/3826
BHP0.310.330.340.36
Sones10.29.58.98.0
CFM33483203303926382110
888
LB/LBP-18-51/2
949
BHP0.390.40.420.450.44
Sones11.711.010.49.48.7
CFM35783442329229362498
BHP0.480.490.510.540.55
Sones13.413.012.011.010.3
CFM409139723847357532182822
LB/LBP-18-73/41085
BHP0.710.730.750.790.820.82
Sones16.816.215.514.613.412.9
CFM4302418940733814349331402674
LB/LBP-18-1011141
BHP0.830.840.860.910.940.960.93
Sones18.017.316.715.914.814.113.8
CFM48494749464844234183388035683208
LB/LBP-18-151
1286
1
⁄2
1375
BHP1.191.21.221.271.321.351.371.35
Sones212019.819.218.517.817.417.1
CFM518550914997479045764311402537193382
BHP1.451.471.491.541.591.631.661.671.65
Sones24232221212019.919.619.5
CFM5505541753285138493647144446417638743538
LB/LBP-18-2021460
BHP1.731.761.781.831.881.931.98221.97
Sones26252423232222222222
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.
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.
Galvanized
(66)
145
RPM
HP
Density 0.075 lb/ft
1200
Aluminum
191 (86)
3
Model
Number
Motor HPFan
RPM
00.250.3750.50.6250.7511.251.51.75
CFM / Static Pressure in Inches wg
CFM28201732
465
LB/LBP-21-41/4
595
BHP0.120.13
Sones6.65.2
CFM360929382457
BHP0.240.280.28
MAX. BHP AT A GIVEN RPM - (rpm/910)
MAXIMUM FRPM = 1200
TIP SPEED = rpm x 5.596
MAX. MOTOR FRAME SIZE = 145T
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.
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.
Galvanized
(85)
188
RPM
HP
Density 0.075 lb/ft
910
799
Aluminum
239 (108)
3
Model
Motor HPFan
Number
LB/LBP-24-41/4
RPM
355
409
00.250.3750.50.6250.750.87511.251.375
CFM3419
BHP0.11
Sones5.8
CFM39382715
BHP0.170.19
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/710)
MAXIMUM FRPM = 910
TIP SPEED = rpm x 6.414
MAX. MOTOR FRAME SIZE = 145T
3
Sones6.35.1
CFM444934512491
462
BHP0.240.280.25
Sones7.46.35.3
CFM489240433433
LB/LBP-24-31/3508
BHP0.320.360.36
Sones8.57.46.8
CFM5604491744413899
LB/LBP-24-51/2582
BHP0.480.540.550.55
Sones10.79.48.98.4
CFM60185381498844973929
625
LB/LBP-24-73/4
667
BHP0.590.660.680.680.66
Sones12.411.010.310.09.5
CFM642358285505506245893984
BHP0.720.80.820.830.830.79
Sones14.112.712.011.511.110.9
CFM7068653162525912550350734555
LB/LBP-24-101734
BHP0.961.051.081.11.11.11.07
Sones17.015.314.613.913.513.212.9
LB/LBP-24-151
1
⁄2787
CFM75787080682065606190579953984909
BHP1.181.291.321.351.361.361.361.32
Sones19.617.416.515.915.415.014.814.1
CFM835879077675744071926855650561415285
868
LB/LBP-24-202
910
BHP1.581.71.741.781.811.821.831.821.76
Sones24212019.418.918.317.917.616.0
CFM8763833381147889766473777056671359955537
BHP1.821.9522.042.072.092.12.12.082.03
Sones27242321212019.819.518.417.2
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.
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.
Galvanized
(113)
249
RPM
HP
Density 0.075 lb/ft
835
Aluminum
318 (144)
3
Model
Number
Motor HPFan
RPM
00.250.3750.50.6250.7511.251.51.75
CFM / Static Pressure in Inches wg
CFM3910
230
LB/LBP-30-31/3
366
BHP0.076
Sones8.0
CFM62214729
BHP0.310.37
MAX. BHP AT A GIVEN RPM - (rpm/512)
MAXIMUM FRPM = 835
TIP SPEED = rpm x 7.985
MAX. MOTOR FRAME SIZE = 184T
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.
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.
Galvanized
(153)
338
RPM
HP
Density 0.075 lb/ft
678
586
Aluminum 444
(201)
3
Model
Motor HPFan
Number
LB/LBP-36-51/2
RPM
220
315
00.250.3750.50.6250.750.87511.251.5
CFM6204
BHP0.16
Sones4.9
CFM88846937
BHP0.470.55
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/384)
MAXIMUM FRPM = 678
TIP SPEED = rpm x 9.425
MAX. MOTOR FRAME SIZE = 184T
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.
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.
Galvanized
(180)
396
RPM
HP
Density 0.075 lb/ft
515
450
Aluminum
530 (240)
3
Model
Number
Motor HPFan
RPM
00.1250.250.3750.50.6250.750.87511.25
CFM / Static Pressure in Inches wg
CFM83286455
MAX. BHP AT A GIVEN RPM - (rpm/301)
MAXIMUM FRPM = 515
TIP SPEED = rpm x 11.061
MAX. MOTOR FRAME SIZE = 184T
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.
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.
Galvanized
(195)
430
RPM
HP
Density 0.075 lb/ft
420
366
Aluminum
579 (263)
3
Model
Motor HPFan
Number
LB/LBP-48-51/2
RPM
150
175
CFM96666546
00.1250.250.3750.50.6250.750.8750.91
BHP0.210.24
Sones6.15.4
CFM112778948
BHP0.340.38
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/241)
MAXIMUM FRPM = 420
TIP SPEED = rpm x 12.632
MAX. MOTOR FRAME SIZE = 213T
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.
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.
Galvanized
(270)
596
Aluminum
780 (354)
Model
Number
Motor HPFan
RPM
00.1250.250.3750.50.6250.750.87511.125
CFM / Static Pressure in Inches wg
CFM12159
MAX. BHP AT A GIVEN RPM - (rpm/198)
MAXIMUM FRPM = 401
TIP SPEED = rpm x 14.137
MAX. MOTOR FRAME SIZE = 213T
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.
22
3
Page 23
Specifications
Direct Drive Specifications
The LD and LDP exhaust fans shall be direct drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances. Wheels shall be statically and dynamically balanced. The fan shall be
constructed of heavy gauge steel or aluminum with a rigid internal support structure and a birdscreen.
Motors shall be mounted on vibration isolators. Motors shall be readily accessible for maintenance.
A disconnect switch shall be factory installed and wired from the fan motor to a junction box within
the motor compartment. A conduit chase shall be provided through the curb cap to the motor
compartment for ease of electrical wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing the
model number and individual serial number for future identification.
Fans shall be models LD or LDP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
Belt Drive Specifications
The LB and LBP exhaust fans shall be belt drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances.
Wheels shall be statically and dynamically balanced. The fan shall be constructed of heavy gauge steel
or aluminum with a rigid internal support structure and birdscreen.
Motors shall be heavy duty ball bearing type, carefully matched to the fan load, and furnished at the
specified voltage, phase and enclosure. Drive frame assembly shall be constructed of heavy gauge
steel. Motors and drives shall be mounted on vibration isolators. Motors and drives shall be readily
accessible for maintenance.
Precision ground and polished fan shafts shall be mounted in permanently sealed, lubricated pillow
block ball bearings. Bearings shall be selected for a minimum L10 life in excess of 100,000 hours
(L50 average of 500,000 hours) at maximum cataloged operating speed. Drives shall be sized for a
minimum of 150% of driven horsepower. Pulleys shall be of the cast type, keyed and securely attached
to the wheel and motor shafts.
Motor pulleys shall be adjustable for final system balancing. A disconnect switch shall be factory
installed and wired from the fan motor to a junction box installed within the motor compartment. A
conduit chase shall be provided through the base to the motor compartment for ease of electrical
wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing
the model number and individual serial number for future identification.
Fans shall be models LB or LBP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
23
Page 24
Other Centrifugal Exhaust Fans
Models G and GB, direct or belt drive, spun aluminum downblast
centrifugal roof exhaust fans are an economical means of exhausting air.
They utilize a backward inclined wheel and are available in 45 different
sizes. Performance capacities range up to 3.25 in. wg (810 Pa) of static
pressure and from 50 to 44,700 cfm (85 to 75,900 m
Series C models CUE, CUBE, CW and CWB are commonly used for general
clean air, mild grease and fume hood exhaust applications. Both roof
upblast and sidewall configurations are specifically designed to discharge
air directly away from the mounting surface. These models are constructed
of aluminum and use an aluminum backward-inclined wheel. They are
UL/cUL Listed for electrical or grease. Performance capacities ranges
up to 5 in. wg (1242 Pa) and up to 30,000 cfm (51,000 m
Model SWB centrifugal backward inclined belt driven utility fans are designed
for supply, exhaust and return air applications requiring higher discharge
velocities and high static pressures. The SWB Series 100 is for general clean air
applications. The SWB Series 200 fans are constructed with heavy gauge steel.
Designed for light industrial duty and grease applications, it’s capacities range
from 70 to 27,000 cfm (120 to 45,900 m
3
/hr) and up to 5 in. wg (1,118 Pa) of static
pressure. SWB fans can be mounted indoors or outdoors.
3
/hr).
3
/hr).
Models NYD and NYB, direct or belt drive, tamper resistant centrifugal roof
exhaust fans are galvanized construction and prevent entry into the unit
and/or building. They utilize a backward inclined wheel and are available in
10 different sizes. Performance capacities range from 170 to 8,080 cfm
(290 to 13,700 m3/hr) and up to 1 in. wg (249 Pa) of static pressure.
Building Value in Air
Greenheck delivers value
to mechanical engineers by
helping them solve virtually
any air quality challenges
their clients face with a
comprehensive selection of
top quality, innovative airrelated equipment. We offer
extra value to contractors
by providing easy-to-install,
competitively priced, reliable
products that arrive on time.
And building owners and
occupants value the energy
efficiency, low maintenance
and quiet dependable operation
they experience long after the
construction project ends.
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change