Antec VFX Series User manual

MANUAL V100
VENTURI FX
VFX Series

VENTURI FX
TABLE OF CONTENTS
For local area support, please
contact your local Antec Controls
Representative
For more information visit
AntecControls.com
Product Overview
Safety Precautions ...................................................... 1
Caution to Contractors ................................................ 1
Receiving Inspection .................................................... 2
Flow and Pressure Data .............................................. 2
Installation and Mounting Instructions
Installing the Venturi FX Unit ........................................ 3
Operation & Maintenance
Start Up & Operation.................................................... 6
Troubleshooting............................................................ 6
Replacement Parts ....................................................... 6
Technical Support ......................................................... 6

VENTURI FX
PRODUCT OVERVIEW
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Safety Precautions
1. Installation work and electrical wiring must be done
by qualified person(s) in accordance with all applicable
codes and standards, including fire-rated construction.
2. When cutting or drilling into wall or ceiling, do not
damage electrical wiring and other hidden utilities.
3. Use this unit only in the manner intended by the
manufacturer.
4. Before servicing or cleaning unit, switch power off at
service panel and lock service panel to prevent power
from being switched on accidentally.
5. Protect flammable materials nearby when brazing,
Use flame and heat protection barriers where needed.
Always have a fire extinguisher ready.
6. The manufacturer assumes no responsibility for personal
injury or property damage resulting from improper
handling, installation, service or operation of the
product.
Caution to Contractors
Venturi Valves are not intended for use as temporary heat
or ventilation sources during building construction. The
units are not designed nor equipped to operate in a dusty
construction environment. Internal parts can become coated
in construction dust, resulting in loss of calibration and
excess wear on the product which in turn can contribute to
reduced life.

VENTURI FX
PRODUCT OVERVIEW
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Receiving Inspection
After unpacking the assembly, check
carefully for shipping damage. If any
damage is found, report it immediately
to the delivering carrier. Damage may
result from improper handling. Do not
tamper with actuator positioning as it
is shipped factory calibrated.
• Never carry or lift the valve by the
damper shaft, flow measuring
station, or the control box.
Flow Data
Unit Size Airflow Range K-factor Weight (lbs)
Min Flow (CFM) Max Flow (CFM)
108 80 800 600 19
110 120 1300 975 20
112 180 1800 1400 22
114 250 2500 1985 24
212 360 3600 2800 40
214 500 5000 4000 45
NOTES:
1. Factory calibrated controls must be selected within the above flow range limits. When setting the flow, the value must
be greater than the minimum setting and within the range limits. Selection of air flow below the listed values is not
recommended. Stability and accuracy may not be acceptable at lower than recommended air flow limits.
2. Please refer to VFX submittals for all dimensional data.
3. Weights are +/- 5 lbs depending on options
4. Valves are rated to operate between 32-120°F within 10-95% RH non-condensing.
VENTURI FX

VENTURI FX
INSTALLATION & MOUNTING INSTRUCTIONS
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Installing the Venturi FX Unit
Before Installation
1. Visually inspect the valve for damage
· Damage to the flow measuring stations in the valve can be detrimental to
performance
· Damage to the coating on fume hood valves can lead to corrosion
2. Inspect the tamper proof paint to ensure it has not be removed. Tamper proof
paint can be found on:
· Actuator
3. Ensure the Specification label for the valve matches the intended installation
location. See Figure 1.
General Installation
1. Ductwork to be supported within eighteen inches (18”) of the Venturi FX
unless otherwise specified.
2. Ensure airflow is travelling through the Venturi FX as described on the Airflow
Direction label. See
Figure 2
3. During operation, the blade damper of the Venturi FX may extend past the discharge of the valve. Ensure that a minimum
of three inches (3”) of duct space is clear of obstacles from the valve discharge.
4. Leave eight inches (8”) of free space in all directions of the controls enclosure to facilitate future access to the controls.
5. The controls enclosure may be rotated 360 degrees around the ductwork.
NOTE: In fume hood applications, or in conditions that may cause condensation inside the ductwork, the enclosure should
not be mounted within +/- 90 degrees from straight down. See Figure 3.
6. Do not screw into Phenolic coated valves. Screws will compromise the venturi valve body and its resistance to corrosion.
Warranty will be void if screws are used.
AntecControls.com
FIGURE 1
FIGURE 3FIGURE 2
90° 90°

VENTURI FX
INSTALLATION & MOUNTING INSTRUCTIONS
4VFX - Manual |AntecControls.com
1 inch
FIG. 4
Size 14 Configuration
Size 8, 10, 12 Configuration
Size 14 Configuration
Size 8, 10, 12 Configuration
Slip-Connection Venturi FX
1. Mount the Venturi FX by slipping both the inlet and the discharge one inch
(1 in.) into the appropriate sized ductwork.
2. Fasten the venturi valve to the ductwork using six (6) sheet metal screws per
a slip connection as shown in Figure 4.
3. Seal the ductwork using duct sealer as shown in Figure 5.
Slip-Connection Venturi FX with Drawband Clamps
1. Slide drawband clamps completely onto the inlet and discharge ductwork as
shown in Figure 6.
2. Mount the Venturi FX by slipping both the inlet and the discharge one inch
(1 in.) into the appropriate sized ductwork
3. Apply appropriate duct tape to seal valve to duct work if required. Two full
wraps around the connection of appropriate duct tape is recommended.
4. Slide the drawband clamps onto the Venturi FX ensuring that at least one and
a half inches (1.5 in.) of the drawband clamps are in contact with the valve
body as shown in Figure 7.
5. Tighten both nuts to ensure that the drawband clamp is tightly fastened to the
Venturi FX and duct work. Neither the Venturi FX nor the band clamp should
shift after fastening.
6. Do not screw through the bandclamp into the Venturi FX body.
CAUTION
Ensure location of bead is correct. For Size 8, 10, and 12 valves, the bead
should be on the valve. For Size 14 valves, the bead should be on the ductwork.
Refer to torque rating on the bandclamp label.
Flange-Connection Venturi FX
1. Align the duct flange holes with the Venturi FX flange holes and fasten using
a bolt, lock washer and nut. Fasten every hole to reduce airflow leakage as
shown in Figure 8.
Flange-Connection Venturi FX with Companion Flanges
1. Slide companion flanges completely onto the inlet and discharge ductwork
with the flanged end of the companion flanges toward the free space.
2. Align hole pattern to match opposing companion flange as shown in Figure 9.
3. Continuously weld companion flange to duct work to ensure zero leakage.
4. Follow Installation of Flange-Connection Venturi FX to complete installation.
CAUTION
To minimize airflow leakage, use a gasket between the ductwork flange and the
venturi flange or seal with duct sealant once connecting bolts are tightened.
FIGURE 4
FIGURE 6
FIGURE 8
FIGURE 5
FIGURE 7
FIGURE 9

VENTURI FX
INSTALLATION & MOUNTING INSTRUCTIONS
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AntecControls.com |VFX - Manual
Venturi FX with Silencer
1. Position silencer before the inlet of the Venturi FX when
the Venturi FX is operating as an Exhaust valve. Position
silencer on the discharge of the Venturi FX when the
Venturi FX is operating as a supply valve. Configurations
shown in Figure 10.
2. It is recommended that the silencer be installed prior to
installing the Venturi FX.
3. Use the support method prescribed for the duct work in
the job specifications.
4. Mount the silencer to the duct. The slip connection
should overlap a minimum of one inch (1 in.) to ensure a
proper fit as shown in Figure 11.
5. Mount the Venturi FX by slipping the appropriate end
into the available duct work and the other into the free
slip connection of the silencer. Each slip connection
should overlap a minimum one inch (1 in.) to ensure a
proper fit.
6. Fasten all connections using six (6) sheet metal screws
per a slip connection as shown in Figure 12.
7. Seal slip connections using duct sealer as shown in
Figure 13.
Venturi Valves with Heating Coil
1. Water coils are only available in supply orientation and
should always be located down stream of the supply
venturi valve.
2. Configuration as shown in Figure 14.
3. Use the support method prescribed for the duct work in
the job specifications.
Air flow
1 inch
EXHAUST
CONFIGURATION
SUPPLY
CONFIGURATION
Air flow
Air flow
FIGURE 10
FIGURE 11
FIGURE 12
FIGURE 13
FIGURE 14

6VFX - Manual |AntecControls.com
VENTURI FX
OPERATION & MAINTENANCE
Start Up and Operation
Before start up operation, familiarize yourself with the unit, options, accessories and controls so you understand proper
system operation. All personnel should have a good working knowledge of general start-up procedures and have the
appropriate start-up and balancing guides available for consultation.
The manufacturer assumes no responsibility for undesirable system operation due to improper design, equipment or
component selection, and/or installation of ductwork, grilles, and other field supplied components.
Troubleshooting
Symptom Possible Cause
Noise 1. Foreign material in valve
2. Vibrating duct work
Actuator Does Not
Operate
1. Confirm that power is being delivered to the unit
2. Verify control signal
3. Verify that the disconnect switch (where available) is not open
4. Verify that the fuse (where available) is not blown
5. Verify that actuator control signal is connected to the correct analog output as per the
submittals
Actual airflow does not
match airflow feedback
1. Confirm that there is no blockage inside the duct or valve
2. Confirm that there is no damage to any tamper proof paint
3. Verify that there are no ductwork leaks before or after the valve
4. Verify that the valve is installed in the correct orientation
5. Verify the tubing has not been kinked, damaged, and that the red tube is connected to the high
port and the green tubing is connected to the low port
Replacement Parts
Replacement parts are available. Please contact your local Antec Controls Representative.
Technical Support
If further technical support is required, please contact [email protected].

VENTURI FX
NOTES
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VENTURI FX
NOTES
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