Document Part # 026-4703 Rev 8 10-JUN-2009
Page 5 of 18
©2009 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
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Installation Instructions: Control Link ACC Anti-Condensate Controller System
technical bulletin
It may be necessary to cut a 0.25”x0.25” notch in the edge of the metal frame behind the sensor
for the wires to pass through.
Dewpoint Sensor Wiring
For wiring, the Dewpoint Sensor is pro-
vided with a 12-foot cable with a four-wire
pigtail at the end (
P/N 335-3200
). Connect
the cable to the dewpoint sensor leads at the
bottom
of the Control Link ACC enclo-
sure, matching wire colors as shown in
Figure 8
. Retail Solutions strongly recom-
mends Dolphin Super B Wire Connectors
(
P/N 110-1000
) for all crimp connections.
If the Control Link ACC will not have a
dewpoint sensor connected to it, it is recommended you insulate the ends of the Control Link
ACC’s dewpoint sensor leads by capping them with Dolphin Super B Wire Connectors.
Dewpoint Sensor Storage
Prior to installation, dewpoint sensors should be stored separately from the cables. Do not store
cables and sensors together for a long period of time in a closed box or bag. The sensor should be
separated from the cables when a shipment is received and stored apart, preferably exposed to
room air. The sensors can become contaminated by outgassing from the cable insulation if kept in
a closed up box or bag with the cable. Contamination can be reversed with exposure to room air
over a period of weeks or in a temperature/humidity chamber over a period of three days.
The Door Temperature Sensor
Placement
The Door Temperature Sensor should be placed in an area where it can measure the temperature
of the door frame in the location on the door frame that stays the coldest. The coldest spot on a
door frame is usually the bottom horizontal section of the stationary frame, under the center door
(for cases with even-numbered doors), or near the center mullion (for cases with odd-numbered
doors). Cooler doors may also be coldest at the top center of the frame.
Figure 6
on
page 4
shows
an example of placement in a case with even-numbered doors — the sensor is placed under the
door just to the left of the center mullion where the Control Link ACC is installed.
Do not mount
the sensor inside the case mullion or anywhere outside the case.
Mount the case door temperature sensor along the door frame inside the frame. Secure the sensor
in place by screwing it to the door frame using the mounting hole.
NOTE: To replace the dewpoint sensor for recalibration pur-
poses, replace the entire assembly (keep the existing cable).
Figure 8 - Dewpoint Sensor Wiring
ACC
