Desert Aire CM3530 Series, Installation And Operation Manual, Page: 10 / 50

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• Hot spots near concealed heating pipes, warm air ducts, supply register
outlets, or solar radiation.
• Cold spots due to a cold wall or draft from stairwells, doors, windows, or
supply register outlets.
• Dead spots such as behind doors or in corners where room air cannot
circulate freely.
1.2.3 Water Temperature Sensors
Desert Aire dehumidifiers ordered with the pool water heating option are supplied with
two water temperature sensors and two immersion wells.
• Screw the wells into the adapter fittings of the inlet and outlet pool water
piping. The wells are equipped with a 1/2” MPT connection.
• Install the sensors upstream and downstream from the dehumidifier or the
auxiliary pool water heater.
• The sensors must be installed in a location where they will accurately sense
the pool water inlet and outlet temperature conditions. This means you must
have continuous water flow at the sensor locations.
1.3 Auxiliary Air Heating Control Wiring
Note: You must use the Desert Aire CM3530 control system to control or interlock with the
room heating system. This prevents the heater from trying to heat the room while the
dehumidifier is running in cooling mode.
1.3.1 Auxiliary Heating - Dry Contact Closure
The standard Desert Aire CM3530 Controller provides a dry contact closure to operate
the auxiliary space heater. The contact closes to energize a heater (may be supplied
by others) which has its own power source.
Install two wires from the thermostat terminal blocks on the heater to the terminals H1
and H2 in the control panel of the dehumidifier. See your wiring schematic for
connection details.
Note: Units with an internal electric air heater have an airflow proving switch installed
between the heater and the control enclosure. If an air heater is installed external to
the unit, provide an external airflow proving switch for protection of the heater.
1.3.2 Auxiliary Heating - Proportional Signal
Desert Aire will provide a proportional 0-10 VDC direct-acting signal to modulate a
heating coil control valve or other auxiliary modulating heater. Most proportional valves
have either three (3) or four (4) terminals for field-installed wiring.
• Four-terminal valves have two terminals for 24 VAC power and two terminals
for the signal input.
Desert Aire - CM3530 Manual