Data Sheet for Product

Siemens Industry, Inc. Page 3 of 4
The face velocity is compared to the face velocity
setpoint to calculate the required exhaust flow. The
controller modulates the damper using a floating
output to maintain the required exhaust airflow. VFD
and Venturi Air Valve applications include use of
calibration table and an analog output to take
advantage of the special flow control characteristics of
these devices. The fume hood controller performs this
control algorithm up to 10 times per second to ensure
maximum speed of response to changes in hood sash
upsets. Concurrently, the controller continually
monitors and updates all fume hood points including:
l Face Velocity
l High/Low Alarms
l Exhaust Airflow
l Sash Position
NOTE: Fume hoods with more than one sash require
use of a Sash Open Area Module (SOAM).
BACnet FHC Specifications
Dimensions 4-1/8" W × 11-1/4" L × 1-1/2" H
(105 mm × 197 mm × 38 mm)
Weight Approx. 3 lbs (1.35 kg)
Power Requirements
Operating Range 19.2 to 27.6 Vac 50 or 60 Hz
Power Consumption 8 VA (Nominal) to 12 VA (Peak) @ 24
Vac (plus 12 VA per DO)
Inputs
Analog 1 Vertical sash sensor
(10K thermistor)
1 Spare AI
(0 to 10 Vdc/4 to 20 mA)
1 External face area or Flow sensor
(0 to10 Vdc/4 to 20 mA)
2 air velocity sensor inputs
(Only for OAM inputs)
Digital 2 dry contacts
Outputs
Analog (3) 0 to 10 Vdc
Digital (8) DO 24 Vac optically isolated solid
state switches @ 0.5 amp
(1) DO dedicated to AZ function
Communications
Remote BACnet MS/TP (EIA 485), 9600 bps
to 76800 bps FLN Trunk
Local WCIS and PTEC Tool
Control Performance
Speed of Response <1 second to flow change
Ambient Conditions
Shipping and Storage
Temperature
-13°F to 158°F (-25°C to 70°C)
Operating Temperature 32°F to 122°F (0°C to 50°C)
Humidity Range 5% to 95% rh (non-condensing)
Airflow Sensing and Control
OAM
Measurement Range
Accuracy
0 to 5600 fpm (0 to 26 m/s) 3.5%
reading maximum error from velocity
pressure of
0.02”WC(5 Pa) to 2.0% error at
maximum velocity.
(Optional) Differential
Pressure Input
Measurement Range
Accuracy
0 to 2.5" WC
± 0.4 % FS
Speed of Response <1 second to flow change
Agency Listings
UL Listing UL 916, PAZX
cUL Listed Canadian Standards C22.2 No. 205,
PAZX7
FCC Compliance 47 CFR Part 15
BTL Listed As a B-ASC device
Operator Display Panel
The Operator Display Panel (ODP) includes a custom
designed package for visual and audible indication of
fume hood operating conditions and push-buttons for
emergency mode operation, alarm silence and user-
defined auxiliary functions. The panel is mounted on
the fume hood in an easy-to-access location and will
fit over an unused hood electrical box or over pre-
drilled holes. RJ-11 type connectors provide
termination to the Fume Hood Controller and for the
Portable Operator’s Terminal. One Operator Display
Panel is supported per Fume Hood Controller.