Document Part # 026-4703 Rev 8 10-JUN-2009
Page 4 of 18
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Installation Instructions: Control Link ACC Anti-Condensate Controller System
technical bulletin
Mounting and Wiring the Sensors
The Dewpoint Sensor
Placement
In order for the Control Link ACC to
function properly, the dewpoint sensor
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 doors (see
Figure 6
). If the sensor cannot be
placed there, mount the sensor on top
of the case.
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.
Note About Using RTV Sealants
Placing the dewpoint sensor in either of these locations may require a hole to be drilled in the case
to run the wire from the sensor to the Control Link ACC. Use caution when sealing this hole with
RTV sealants — the sensor element is sensitive to high concentrations of RTV. Do not let any
RTV sealants touch the sensor element, and keep the sensor element as far as possible from where
the hole is sealed.
Dewpoint Sensor Mounting Dimensions
The Dewpoint Sensor is provided with a pair of
mounting holes with 2.75” spacing. Choose a
location as close to the case doors as possible,
preferably directly over the doors or (if necessary)
on top of the case. Secure the sensor to the mount-
ing location with two screws (not supplied —rec-
ommended size #6 x ¼” long with sheet metal
threads). Hex head is recommended, but a slotted
head can be used. Note that the enclosure allows
clearance for a nut driver on the screw head.
Figure 7
shows the mounting dimensions.
Figure 6 - Sensor Placement
Figure 7 - Dewpoint Sensor Dimensions
