Terra Universal Product Manual
WhisperFlow® Fan Filter Units
©
Copyright 2021 Terra Universal Inc. All rights reserved.
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
11
3.4
Smart® WhisperFlow® with EC Motor
The Smart® WhisperFlow® has an electronically commutated (EC) brushless motor that allows for quiet, energy-efficient
operation and infinitely variable speed control. The wide range is ideal for applications involving high static pressure. This
unit includes an internal microprocessor that can be incorporated into Building Management Systems (BMS) to allow
remote monitoring and control. FFU includes MODBUS® networking control card with closed-loop control capability that
supports air pressure, air flow, and particle count sensors. The motor control panel includes diagnostic indicator lights,
manual speed adjustment, test probe jacks, CAT5e ports, control mode switch and MODBUS® address DIP switch bank.
The EC motor offers high performance, low energy consumption and low noise levels (40 dB) with forward-curved
centrifugal fans. These units comply with Title 24 and ErP 2015 Directive.
The EC motor Control Card can be equipped with a 3/8”-diameter challenge port, which can be used to take differential
pressure measurements to monitor filter performance or insert aerosols for leak-test certification. Port is capped when not
in use.
PRODUCT DIMENSIONS
Nominal Unit
Size (ft.)
Active Filter
Area (sq. ft.)
W (in)
L (in)
H (in)
Weight
(lbs.)
2’ x 4’
7.2’
23.63”
47.56”
12.60”
71
2’ x 4’ (RSR)
5.2’
23.63”
47.63”
14.66”
71
2’ x 3’
5.3’
23.63”
35.56”
12.60”
53
2’ x 3’ (RSR)
3.7’
23.63”
35.63”
14.66”
53
2’ x 2’
3.4’
23.63”
23.56”
12.60”
44
2’ x 2’ (RSR)
2.2’
23.63”
23.63”
14.66”
44
PERFORMANCE DATA
Nominal
Unit Size
(ft.)
Filter
Max
CFM
Watts @
Max CFM
Watts @ 90
FPM
Sound (dB.)
@ 90 FPM
2 ’x 4’
HEPA
900
350
180
40
2’ x 4’
HEPA (RSR)
900
350
170
40
2’ x 3’
HEPA
780
325
110
40
2’ x 3’
HEPA (RSR)
780
325
80
40
2’ x 2’
HEPA
475
225
100
40
2’ x 2’
HEPA (RSR)
400
130
70
40
