ZEC410 VAV Controllers Installation Instructions
3
To mount the 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 from the controller transformer as well as the VAV box fan and heater circuits, if applicable.
3.
Set all the switches on the field controller to their known settings, and then set the Master-Slave/Token-Passing
(MS/TP) address, and ensure that EOL is set to Off. See
Setup and Adjustments
.
4.
Place the ZEC controller in the proper mounting position on the actuator shaft so that the wiring connections
are easily accessible. Make sure the ZEC controller base is parallel to the VAV box (perpendicular to the
damper shaft). If needed, use a spacer to offset tipping of the ZEC controller caused by the shaft bushings.
Note:
Use the alignment marks to center the captive spacer to ensure sufficient ZEC movement in either direction
(Figure 8).
5.
Secure the self-drilling No. 10 screw through the captive spacer 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 5/16 in. drill bit. Insert the mounting screw and tighten it against the spacer.
6.
Locate the damper position using the typical marking on the end of the damper shaft.
Table 1: Verasys System Bus Controller Addressing
System Bus
Address/Range
Standalone Verasys System Bus
(not integrated into a BACnet BAS
network)
Verasys System Bus
(integrated into a BACnet BAS network)
1
May be used for Verasys system controllers
Used for BACnet reserved function devices - not
used for Verasys System Bus controllers
2
3
Address used by an FC Bus or System Bus - connected to a Smart Building Hub - not used for Verasys
System Bus controllers or BACnet device address
May be used for Verasys System Bus controllers if
there is not an FC Bus or System Bus connected
Smart Building Hub
May be used for Verasys System Bus controllers if
there is not an FC Bus or System Bus connected
4
May be used for Verasys System Bus controllers
May be used for Verasys System Bus controllers if
there is a not a BACnet device address conflict
117
Address used by the Smart Building Hub - not used for other Verasys System Bus controllers or BACnet
device address
118 through 127
May be used for Verasys System Bus controllers
May be used for Verasys System Bus controllers if
there is not a BACnet device address conflict
IMPORTANT:
Do not overtighten the screw, or the threads may strip. If you mount the ZEC to the VAV box,
make sure that the screws do not interfere with damper blade movement.
Alignment
Marks
Figure 1: Captive Spacer Alignment Marks
