Desert Aire CM3500 Series, Installation And Operation Manual

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You must follow the instructions included with the valve cut sheet. Observe the
proper polarity or you may damage both the valve and the controller. (See your
wiring schematic for connection details.)
1.4. Mounting the optional RDT
The optional RDT must be mounted in a dry, non-corrosive environment. Operating
conditions must be between 0.0° F and 140.0° F and less than 90% RH.
CAUTION:
Moisture can damage the circuitry of the display. The display can either be
mounted directly to the dehumidifier or located up to 20 feet away using the cable that came
with the display.
1.4.1. Wiring the optional RDT (Figure 3)
The optional RDT is an IP40 device and is powered through the cable provided. If
a longer length is required, there are two options. For locations of the RDT up to
150 feet, use a standard 24 AWG, 6 conductor phone cable. For locations of the
sensor up to 1,500 feet, use 22 AWG, 3 twisted pair cable. Pull the connector through
the hole in the back of the mounting bracket. Attach the bracket to the wall. After
plugging the cord into the back of the RDT, feed any extra wiring back into the hole of
the mounting bracket and gently snap the RDT into the bracket.
Figure 3
CAUTION: Do not run the RDT wiring in the same conduit as, OR adjacent to
wires carrying over 24 VAC.
1.5. CM3500 Controller Overview
Desert Aire’s CM3500 microprocessor controller is a powerful, flexible controller with many
useful features including:
• Display of room air temperature, relative humidity and refrigerant pressures.
• Display of equipment operating status such as dehumidification and cooling.
• Display of alarms on abnormal conditions such as sensor failures or tripped safety
controls.
Desert Aire - CM3500 Manual