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Smart Equipment Controls
Installation, Operation and Maintenance Manual
Form No. SECIOM.A
Effective Date: 07/05/19
Page 3
Initial Setup
Mounting
To mount the SE-ZEC Controllers:
1.
Ensure that you have the appropriate personal protective equipment (PPE), such as a hard hat, safety glasses,
steel toe boots, and gloves.
2.
Disconnect power to the VAV unit.
3.
Set the MS/TP address, and ensure the end of line (EOL) switch is set to off. Instructions on setting the VAV
address and EOL are in the sections below.
4.
Place the SE-ZEC Controller in the proper mounting position on the actuator shaft so that the wiring connections
are easily accessible. Make sure the SE-ZEC Controller base is parallel to the VAV box (perpendicular to the
damper shaft). If needed, use a spacer to offset tipping of the SE-ZEC Controller caused by the shaft bushings.
5.
Use the alignment marks to center the captive spacer to ensure sufficient movement in either direction.
Fig. 1: Captive Spacer Alignment Marks
6.
Secure the self-drilling #10 screw through the captive spacer with a power screwdriver and 4” (100 mm) 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 5/16” drill bit. Insert the mounting screw and tighten against the spacer.
7.
Locate the damper position using the typical marking on the end of the damper shaft.
8.
Note the direction, clockwise (CW) or counterclockwise (CCW), required to close the damper. The actuator setup
depends on the necessary amount of rotation required for the damper to go from full-open to full-closed. For 90°
rotation, install the damper full-closed.
9.
Push down and hold the manual override button and turn the SE-ZEC Controller until it contacts the mechanical
end-stop at either the full-closed or full-open position.
Fig. 2: Manual Override and Coupler
10. Tighten the square coupler bolt to the shaft using a 5/16” (8 mm) wrench or a 3/8” (10 mm) 12-point socket.
Tighten to 95 to 105 lb·in (10.5 to 11.5 N·m)
11. Put a loop in the pneumatic tubing, to trap condensation, when you attach the tubing to the SE-ZEC Controller
pressure transducer ports. Loop the tubing before you make the final connections.
Alignment
guide