11
1.
Installation
1.1. Humidity and Temperature Control Package
Your Desert Aire controller is designed for precise monitoring and control of air temperature
and relative humidity (RH) within a conditioned environment.
This CM3500 control system is easy to install and operate. It features either an internal
display terminal, as part of the controller, or a wall-mountable remote display terminal (RDT),
in cases where the controller mounted display would prove hard to view or use. Both allow
you to view and adjust set points and modes of operation. They also indicate the operating
status of major components inside of the dehumidifier.
Most sensors and inputs have been factory-installed and wired inside of the dehumidifier.
In most cases, you need only mount and wire the supply air temperature sensor and, if
provided, the RDT. The RDT, which is simply an interface tool, contains no sensors. You do
not need to install it in the room you wish to dehumidify. If purchased with your system, CO
2
and remote room sensors may require mounting as well.
1.2. Sensor Installation
Your controller is provided with a duct-mountable temperature sensor for the supply air.
If the unit was purchased with the zone reset option, it also has one or multiple remote
room sensors. Additionally, if the unit was purchased with the CO
2
option, it has an indoor
and outdoor CO
2
sensor.
1.2.1. Duct-Mount Sensor
A duct-mount sensor is normally used in applications where continuous blower
operation is desired. A duct-mount sensor helps ensure consistent conditions
throughout the space.
CAUTION:
A potential drawback of this sensor is that it relies on a continuous
stream of air moving past it. Using a duct-mount sensor with a non-continuous
blower may lead to short-cycling of the refrigeration compressor.
Install the duct-mount sensor in the supply air duct.
CAUTION:
Do not mount the sensor in a section of duct where false readings may
occur due to dead air regions, solar heat gain or thermal losses in winter. Do not
mount the sensor where water is likely to drip on it. Install two, 18 gauge (0-500 feet)
OR two, 24 gauge (0-100 feet) wires from the sensor to the labeled terminal strip in the
control panel of the dehumidifier. (See your wiring schematic for connection details.)
CAUTION:
Undersized wiring will cause inaccurate sensor readings. Do not run
sensor wiring adjacent to, OR in the same conduit as, wires carrying more than 24 VAC.
Desert Aire - CM3500 Manual
Summary of Contents for CM3500 Series
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