Mounting Instructions - Distech Controls ECB-VAV UUKL Installation Manual

Mounting Instructions

Each controller is specially designed for easy installation either directly on an air duct or in a panel by using the integrated mounting collar and the screw
that is provided with the controller. This mounting arrangement opposes the torque applied to the damper shaft.
Mounting Position
To prevent condensation on the VAV box's damper shaft from entering the controller's electronics, the controller's mounting orientation should be any
position above the damper shaft (between 0 and 180°) so that any condensation from the damper shaft will fall away from the controller's electronics.
Further countermeasures may be required in some installations. This is important in hot, humid climates where the VAV box is located near exterior
doors or loading bays that may be blocked open or when the VAV box air supply is below 50°F (10°C).
90°
0° 180°
VAV Box Shaft
270°
Figure 5: Recommended Mounting Position Angle Range
Mounting Procedure for Terminal Covers
Terminal covers can be added to any VAV controller to protect inadvertent contact with the controller's electrical connections.
£
A terminal cover kit can be added to both sides of the controller.
Controllers with terminal block covers can only be mounted on a flat surface that is sufficiently large to provide space around the installation. In this sce-
nario, conductors must be made inaccessible and wiring must comply with local wiring regulations and methods appropriate for fixed equipment installa-
tion in a building (the use of cable conduits and trunking for example).
1. Separate the cover from the base of the terminal covers.
2. Attach the base of the terminal cover(s) to the underside of the VAV controller's body with the tabs, as shown below.
Figure 6: Terminal Cover Attachment Tabs
3. Install the VAV controller according to the next procedure, VAV Controller Mounting Procedure.
4. Connect and wire the controller according to the procedures shown later in this document.
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