• Several 6 mm (1/4 in.) female spade terminals for input and output wiring
• Small straight-blade screwdriver for securing wires in the terminal blocks
Mounting
Observe these guidelines when mounting an FX-PCV.
Important:
When the air supply to the VAV box is below 10°C (50°F), make sure that any
condensation on the VAV box, particularly on the damper shaft, does not enter the FX-
PCV electronics. Mount the FX-PCV vertically above the damper shaft to allow any shaft
condensation to fall away from the FX-PCV. Additional measures may be required in some
installations.
• Ensure the mounting surface can support the controller and any user-supplied enclosure.
• Mount the controller on a hard, even surface whenever possible.
• Use shims or washers to mount the controller securely and evenly on the mounting surface.
• Mount the controller in an area free of corrosive vapors and observe the ambient conditions in
section.
• Provide sufficient space around the controller for cable and wire connections and good
ventilation through the controller. Leave a minimum of 50 mm (2 in.) around the top, bottom,
sides, and front of the controller.
• Do not mount the controller on surfaces prone to vibration, such as duct work, or in areas
where electromagnetic emissions from other devices or wiring can interfere with controller
communication.
On panel or enclosure mount applications, observe these additional guidelines:
• Do not install the controller in an airtight enclosure.
• Mount the controller so that the enclosure walls do not obstruct cover removal or ventilation
through the controller.
• Mount the controller so that the power transformer and other devices do not radiate excessive
heat to the controller.
To mount the FX-PCV controller:
1. Place the controller in the proper mounting position on the damper shaft so that the wiring
connections are easily accessible. Make sure the controller base is parallel to the VAV box
(perpendicular to the damper shaft). If needed, use a spacer to offset tipping of the FX-PCV
controller caused by the shaft bushings.
2. Secure the self-drilling No. 10 screw through the FX-PCV controller mounting slot with a power
screwdriver and 100 mm (4 in.) extension socket. Otherwise, use a punch to mark the position
of the shoulder washer, and then drill a hole into the VAV box using a 3.5 mm (9/64 in.) drill bit.
Insert the mounting screw, and tighten against the washer.
Important:
Do not overtighten the screws, or the threads may strip. If mounting to the
VAV box, make sure the screws do not interfere with damper blade movement.
3. Locate the damper position using the typical marking on the end of the damper shaft.
FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions
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