Mounting And Powering; Installation; Powering The Xev22D; Choosing Transformer Sizes - Emerson XEV22D Installation And Operation Manual

5 Mounting and
Powering
The XEV22D is usually mounted by the Refriger-
ation equipment manufacturer. Therefore, the install-
er need only make the necessary connections between
the boards and the site controller(s).
Figure 5-1 - DIN Mounting
Mount:
Material:
Self-extinguishing:
Comparative Tracking
Index (CTI):
Color:
Table 5-1- XEV22D Enclosure Specification
4 • XEV22D I&O Manual
On a DIN rail (EN 50022,
DIN 43880) Fastened with
screws via the removable
plastic flaps
PC-ABS Thermoplastic
VO (UL94)
300V
Gray
In some instances, an installer may be required to
mount the XEV22D. There are no restrictions on the
location of the XEV22D; however, the controller
should be mounted in a location protected from mois-
ture. Typically, mounting inside the electrical control
panel of a package unit is acceptable.

5.1. Installation

The XEV22D uses a DIN mount installation.

5.2. Powering the XEV22D

Retail Solutions supplies a wide variety of 24VAC
transformers with varying sizes without center taps.
Table 5-2 shows the transformer sizes and are non
center-tapped.

5.2.1. Choosing Transformer Sizes

The transformer used to power the XEV22D
should have at least a 20VA rating. The XEV22D
should not share a transformer with any other de-
vices.
026-1206 Rev 3 13-DEC-2012