EMERSON 4708 Control Link ACC Dewpoint Sensor User Guide
- June 13, 2024
- Emerson
Table of Contents
EMERSON 4708 Control Link ACC Dewpoint Sensor
Product Information
The Control Link ACC Dewpoint Sensor is a vital component for the proper functioning of the Control Link ACC system. It allows for the measurement of the dewpoint of the air outside the case. The dewpoint sensor (P/N 814-6115) is designed to be mounted underneath the top side of the case, just above the top of the case doors. The sensor has a small notch in the edge of the metal frame behind it, which may be required for the wires connecting it to the Control Link ACC. It is important to avoid any contact between RTV sealants and the sensor element, and to keep the sensor element as far away as possible from RTV sealed areas.
The dimensions of the dewpoint sensor are 0.25 x 0.25 inches (6.35 mm x 6.35
mm). For a visual reference on how to properly place the sensor, please refer
to Figure 1 – Sensor Placement and Figure 2 – Sensor Dimensions.
For additional technical documentation and updates, please visit our website
at http://www.emerson.com/.
Technical Bulletin
In order for the Control Link ACC to function properly, the dewpoint sensor
(P/N 814-6115) must be placed where it can measure the dewpoint of the air
outside the case. Mount the sensor underneath the top side of the case in the
area just above the top of the case doors (Figure 1). A 0.25” x 0.25” (6.35 mm
x 6.35 mm) notch in the edge of the metal frame behind the sensor may be
required for the wires connecting the dewpoint sensor to the Control Link ACC.
DO NOT let any RTV sealants touch the sensor element, and keep the sensor
element as far as possible from RTV sealed areas.
Do NOT mount the dewpoint sensor near the bottom of the case or any place
where cold air from the case can affect the sensor reading. Avoid mounting the
sensor in an area with excessive water spray or moisture, extremely dirty
environments, near heat sources, or in the direct path of HVAC returns. Secure
the sensor to the mounting location with the two included screws (P/N
031-6005) as shown in Figure 2. Emerson recommends using pilot holes for the
screws. Tighten screws just enough to secure sensor without warping the sensor
housing.
Dewpoint Sensor Wiring
The dewpoint sensor cable can be 20-24 AWG range. Emerson recommends Belden# 8711 P/N 135-8711 22AWG cable or equivalent (not supplied). To install or remove wires from the dewpoint sensor connector,insert a small screwdriver, such as a Phoenix Contact P/N 0116993 PTSM Screwdriver (not supplied), into the top rectangular slots on the connector (above the wire terminals) until it stops; insert or remove wires as shown in Figure 3. Insert the three (3) wires on the other end of the cable to the matching 3-pin connector of the low voltage end of Control Link ACC by first pressing in the orange tabs above the terminals with the small screwdriver. Ensure the wire colors match for the Power, Data and Ground terminals on dewpoint Sensor and the Control Link ACC.
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The contents of this publication are presented for informational purposes only
and they are not to be construed as warranties or guarantees, express or
implied, regarding the products or services described herein or their use or
applicability. Emerson Climate Technologies Retail Solutions, Inc. and/or its
affiliates (collectively “Emerson”), reserves the right to modify the designs
or specifications of such products at any time without notice. Emerson does
not assume responsibility for the selection, use or maintenance of any
product. Responsibility for proper selection, use and maintenance of any
product remains solely with the purchaser and end-user.
026-4708 Emerson is a trademark of Emerson Electric Co. ©2018 Emerson Climate
Technologies Retail Solutions, Inc. All rights reserved.
©2018 Emerson Climate Technologies Retail Solutions, Inc. This document may be
photocopied for personal use. Visit our website at http://www.emerson.com/
for the latest technical documentation and updates.
References
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