Desert Aire CM3530 Series, Installation And Operation Manual, Page: 9 / 50

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1. Installation
1.1 Introduction
Your Desert Aire controller is designed for precise monitoring and control of air temperature
and relative humidity (RH) within a conditioned environment.
This CM3530 control system is easy to install and operate. The controller features an internal
display terminal (IDT). This display allows viewing and adjustment of the unit’s sensors and
set points. It also indicates the operating status of major components inside the dehumidifier.
The CM3530 controller also has the ability to control auxiliary equipment such as a pool water
or tower water pumps and auxiliary heating devices for optimum energy efficiency.
Most sensors and devices have been factory-installed and wired inside the dehumidifier. In
most cases, only connection to a remote condenser, electrical power connection and an
ethernet connection to the facilities computer network are required. For units requiring a wall
mounted zone air temperature and relative humidity sensor, wiring to the unit will be required.
Also, units with a pool condenser will require temperature sensors to be wired in the pool
water piping.
The control system includes a web page which allows a virtual display terminal to be accessed
from any device on the computer network. Simply browse to the IP address assigned to the
dehumidifier, enter the appropriate credentials, [user – Desert-Aire, password – 18485] and
select the DISPLAY tab. Logging is also available from this web page.
The CM3530 controller also features optional building automation access. This includes
options for network connect ability including LONWORKS, BACnet IP, BACnet MS/TP,
ModBus RTU and ModBus IP.
1.2 Sensor Installation
The CM3530 control system is normally provided with a unit mounted combination relative
humidity and temperature sensor. This sensor provides accurate control without the problems
associated with wall mounted sensors, such as faulty readings due to hot spots or drafts. If a
pool water condenser has been provided in the dehumidifier, pool water temperature sensors
will need to be installed in the water piping.
1.2.1 Unit Mounted Sensor
This sensor is factory mounted in the return air duct upstream of any outdoor
air intakes.
1.2.2. Wall-Mount Humidity and Temperature Sensor
If your dehumidifier was ordered with a wall-mount humidity and temperature sensor,
mount the sensor about five feet above the pool deck on an interior wall with natural
air circulation. Avoid the following locations:
Desert Aire - CM3530 Manual