Housed Plenum Fans
Model HPA
Direct Drive
October
2012
Quiet & Efficient
HPA Plenum Fans
®
Greenheck’s housed plenum fan, model HPA, is designed and
engineered to provide superior performance and reliability in
commercial or industrial applications. Greenheck’s products are
manufactured with state-of-the-art laser, forming, spinning and
welding equipment and endure quality control testing to ensure
trouble free start-up. The HPA can be used as a single fan in a
sound critical application or in parallel to construct a fan array
system. The HPA features a modular design with a structural
housing that allows multiple modules to stack side-by-side and
on top of one another to form an array.
Typical applications include:
• Packaged air handlers
• Built-up air handlers
• Custom air handlers
• General supply and return systems
• Retrofit projects
Fan Arrays
When used in a fan array, the HPA fan offers several advantages over a standard (large) plenum fan:
• Multiple fans stacked in parallel offer uniform flow through an air handling unit.
• Multiple smaller fans running at faster speeds produce higher
frequency noise that is easily absorbed by the sound
attenuating housing. Large fans running at slower
speeds produce low frequency noise that is
hard to attenuate.
• Fan arrays have a shorter
axial length, minimizing the
footprint of the fan space.
Retrofit Applications
In addition to the new
construction market, the HPA is
a great solution for replacement
or retrofit projects.
• The small, lightweight design
makes the HPA easy to move through
doors and elevators compared to one large fan.
• The modular construction of the HPA makes installation
easy compared to field assembling a large fan with custom split housings, reducing labor costs.
• Utilizing multiple fans with smaller, lighter motors eliminates the need for cranes and lifting equipment during
installation.
• The number and size of fans can be optimized to deliver the required airflow and fit in the existing location.
2
HPA Advantages
®
Versatility
The HPA is available in 10 wheel sizes (15-36) and three different housing options* making it the most versatile
modular plenum fan on the market. Available with partial wheel widths and variable frequency drive (VFD) rated
motors, the user can select the best fan for optimum performance and efficiency.
*Two housing options are available for fan size 15 and 36.
Internal Isolation
The fan assembly, which consists of the wheel, inlet cone, motor and frame, is completely isolated from the
sound attenuating housing with integral neoprene vibration isolators as a standard feature. This feature allows
the units to be stacked side-by-side and on top of each other which eliminates the need for vibration isolators
between each unit.
Motors for use with a Variable Frequency Drive (VFD)
All motors meet NEMA Premium Efficiencies and are VFD compatible in construction.
Quality Assurance
All plenum fans receive a run test at the design speed in the factory after final assembly. HPA fans are subjected
to a complete vibration analysis in three planes. The recorded vibration levels must meet the requirements of
BV-4 AMCA/ANSI standard 204-05 (Balance Quality and Vibration Levels for Fans). A permanent record of this
test is kept on file at the factory for future reference. A copy of the test report is available upon request.
AMCA Air and Sound Certification
AMCA certification assures that all Greenheck HPA plenum fans will
perform as cataloged. Fans are rated for air performance as well as
sound levels (inlet and outlet).
Greenheck Fan Corporation
certifies that the model
HPA shown herein is
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.
Model Number Code
HPA
-
18
-
95
-
S
-
B 750
Model
Housed Plenum Array
Wheel Size
15-36
Wheel Width
50-100
Motor HP
150 = 15
200 = 20
250 = 25
300 = 30
400 = 40
500 = 50
600 = 60
750 = 75
Motor RPM
A = 1770
B = 1170
M = 3500
Housing Size
C = Compact
S = Standard
L = Large
3
Standard Construction
and Features
®
Sound Attenuating Housing
Galvanized Construction
The fan assembly is mounted inside a sound
attenuating housing. The housing has a perforated
galvanized inner liner that directs sound waves into
two inches of sound absorbing fiberglass between
the inner liner and the solid outer shell. The result is a
reduction of sound levels.
The fan assembly and sound attenuating
housing are constructed of laser cut and
die-formed heavy-gauge galvanized material.
Internal Vibration Isolation
Neoprene isolators mounted between the fan assembly
and the sound attenuating housing reduce vibration,
eliminating the need for isolators and gaskets between
modules. Flexible gasket material between the inlet cone
and sound attenuating housing creates an airtight seal.
Housing Options
Three different sound attenuating housing sizes makes the sizing the HPA
extremely flexible. The standard housing is sized for optimum performance versus
footprint. The compact housing offers a smaller footprint for applications with
space constraints and the large housing offers increased air performance for
higher efficiencies.
4
®
Low Maintenance
Modular Construction
The HPA is a direct drive fan so there are no belts, sheaves or
fan bearings to tension, replace or lubricate. Lubricating the
motor bearings is the only maintenance required.
The lightweight design makes the HPA
easy to transport and stack. There are no
fasteners on the external casing, making
it clean and easy to install. Inlet and outlet
flanges makes connecting adjacent units
quick and easy.
12-Bladed Aluminum Airfoil Wheel
The HPA features a high
efficiency, low sound
12-bladed airfoil wheel.
The aluminum wheel
reduces start-up torque
requirements, as well
as shaft loading during
operation. The airfoil
blades are constructed
of 6063-T5 aluminum
extrusions to improve
efficiency and reduce
vibration. All wheels are
balanced to grade G6.3 per
ANSI S2.19.
5
HPA Optional Construction
& Performance
®
Partial Width Wheels
Inlet Guard
Wheels are available from 50% to 100% for optimum
performance and flexibility.
A galvanized low-pressure
loss guard that protects
the inlet of the fan.
Outlet Guard
Sure-Aire™ Flow
Monitoring System
To protect the outlet of fan. Guard is removable to
easily service or replace the motor.
Sure-Aire provides realtime flow measurement for
use in building automation
Inlet Guard and
systems. The Sure-Aire’s
Sure-Aire™ Aire Flow
non-invasive design is
Monitoring System
accurate to within 3% and
does not impact fan performance.
Blank-off Panel
A blank-off panel is a cost-effective way to prevent
backflow of air through a fan if the fan is taken out
of service. One blank-off panel
would be used per fan array
instead of a backdraft damper
on each fan. There is no pressure
drop associated with the blank off
panel since it isn’t installed until
the fan is down. The blank-off
Blank-off Panel
panel must be installed manually.
Extended Lube Lines
Lubrication lines can be extended from the motor to
the outside of the sound attenuating housing. This
allows for easy motor bearing lubrication without
having to remove guards or reach inside the housing.
Inlet Damper
An EM-32 backdraft damper
installed on each fan will prevent
backflow of air if a fan should be
taken out of service. The backdraft
damper will close automatically
without manual intervention.
Shaft Grounding Rings
Factory-installed shaft grounding rings ensure motor
bearing protection from variable frequency drive (VFD)
induced shaft currents.
HPA Performance
Inlet Damper
16Performance (single fan)
HPA
For multiple fans in an array, multiply the single fan performance by the number of fans to get the total CFM.
12
12
Static Pressure (in. wg)
10
10
88
66
44
22
00
36
33
Pe
rfo
rm
anc
eR
ang
e
Static Pressure (in. wg)
14
14
15
16
18
20
30
27
24
22
1770 RPM
10 1001000
11 10
100
1000
Volume (cfm x 100)
6
Volume (cfm x 100)
Dimensional Data
®
Housing Flexibility
Compact offers a smaller footprint
than the standard housing for
applications with space limitations.
Standard is sized for optimum
performance versus footprint.
Large offers improved air
performance for applications
that require high efficiency.
Standard Housing
H
D
W
Dimensions are in inches.
^Does not account for motors or accessories.
*Weight is less motor.
Wheel
Size
Compact Housing
W
H
D^
Maximum
Stacked
Modules
-
15
-
-
-
16
29.00
29.00
32.06
18
31.50
31.50
37.00
20
34.38
34.38
38.19
22
37.25
37.25
39.56
24
41.00
41.00
42.19
27
44.75
44.75
43.75
30
48.94
48.94
47.56
33
53.81
53.81
48.94
36
58.81
58.81
51.06
4
3
2
Maximum
Motor
Frame
Wheel
Size
W
H
D^
15
29.00
29.00
32.06
16
31.50
31.50
37.00
18
34.38
34.38
38.19
20
37.25
37.25
39.56
22
41.00
41.00
42.19
24
44.75
44.75
43.75
27
48.94
48.94
30
53.81
53.81
33
58.81
58.81
51.06
36
64.56
64.56
51.06
Weight*
(lbs.)
Maximum
Motor
Frame
Weight*
(lbs.)
215T
215
256T
250
256T
290
256T
340
286T
380
286T
425
47.56
286T
680
48.94
326T
820
Maximum
Stacked
Modules
4
3
2
326T
960
326T
1100
Maximum
Motor
Frame
Weight*
(lbs.)
Large Housing
W
H
D^
Maximum
Stacked
Modules
4
-
-
31.50
31.50
37.00
215T
215
34.38
34.38
38.19
256T
250
37.25
37.25
39.56
256T
290
41.00
41.00
42.19
3
256T
250
256T
290
256T
340
286T
380
256T
340
44.75
44.75
43.75
286T
425
286T
380
48.94
48.94
47.56
286T
680
286T
425
53.81
53.81
48.94
326T
820
286T
680
58.81
58.81
51.06
326T
820
64.56
64.56
51.06
326T
960
-
-
-
2
-
326T
960
326T
1100
-
-
7
Design and Selection Support
Enjoy Greenheck’s extraordinary service, before, during and after the sale.
Greenheck offers added value to our wide selection of top performing, energy-efficient products
by providing several unique Greenheck service programs.
• Our Quick Delivery Program ensures shipment of our in-stock products within 24 hours of
placing your order. Our Quick Build made-to-order products can be produced in 1-3-5-10- or
15-day production cycles, depending upon their complexity.
• Greenheck’s free Computer Aided Product Selection program (CAPS), rated by many as the
best in the industry, helps you conveniently and efficiently select the right products for the
challenge at hand.
• Greenheck has been Green for a long time! Our energy-saving products and ongoing
corporate commitment to sustainability can help you qualify for LEED credits.
• Our 3D service allows you to download, at no charge, easy-to-use AutoDesk™ Revit™ 3D
drawings for many of our ventilation products.
Find out more about these special Greenheck services at greenheck.com
To-Scale Drawings and Fan Specifications
To-scale CAD drawings along with detailed centrifugal specifications can be found online at
www.greenheck.com or within our Computer Aided Product Selection program (CAPS).
Building Value in Air
Greenheck delivers value
top quality, innovative air-
And building owners and
to mechanical engineers by
related equipment. We offer
occupants value the energy
helping them solve virtually
extra value to contractors
efficiency, low maintenance
any air quality challenges
by providing easy-to-install,
and quiet dependable operation
their clients face with a
competitively priced, reliable
they experience long after the
comprehensive selection of
products that arrive on time.
construction project ends.
Our Commitment
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the
Library under Warranties.
Prepared to Support
Green Building Efforts
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
0O.CVI.1027 R1 10-2012 IW
Copyright © 2012 Greenheck Fan Corp.