ZEC410 VAV Controllers Installation Instructions
2
Installation
Observe these guidelines when installing a ZEC controller:
•
Transport the ZEC controller in the original container to minimize vibration and shock damage to the ZEC
controller.
•
Do not drop the ZEC controller or subject it to physical shock.
Parts Included
•
one ZEC controller with removable FC and SA buses and power terminal blocks
•
one self-drilling No. 10 x 25 mm (1 in.) screw
Materials and Special Tools Needed
•
6 mm (1/4 in.) female spade terminals for input and output wiring and crimping tool or spade mounted terminal
blocks
•
small straight-blade screwdriver for securing wires in the terminal blocks
•
8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point socket to tighten the square coupler bolt
•
shims or washers to mount the ZEC, if necessary
•
power screwdriver, 100 mm (4 in.) extension socket, o r a punch, drill, and 3.5 mm (9/64 in.) drill bits to mount
the ZEC
•
pliers to open and close the damper
•
3.97 mm (5/32 in.) ID poly tubing
Mounting
Observe these guidelines when mounting a ZEC:
•
Ensure that the mounting surface can support the ZEC and any user-supplied enclosure.
•
Mount the ZEC on a hard, even surface whenever possible.
•
Use shims or washers to mount the ZEC securely and evenly on the mounting surface, if necessary.
•
Mount the ZEC in an area free of corrosive vapors that matches the ambient conditions specified in the
Technical Specifications
section.
•
Provide sufficient space around the ZEC for cable and wire connections and adequate ventilation through the
controller (at least 50 mm [2 in.] on the top, bottom, sides, and front of the controllers).
•
Do not mount the ZEC in areas where electromagnetic emissions from other devices or wiring can interfere
with controller communication.
•
Avoid mounting the ZEC on surfaces with excessive vibration.
On panel or enclosure mount applications, observe these additional guidelines:
•
Do not install the ZEC in an airtight enclosure.
•
Mount the ZEC so that the enclosure walls do not obstruct cover removal or ventilation through the controller.
•
Mount the ZEC so that the power transformer and other devices do not radiate excessive heat to the controller.
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 ZEC electronics. Mount the ZEC vertically above
the damper shaft to allow any shaft condensation to fall away from the ZEC. Additional measures may be
required in some installations.
