Desert Aire Aura QS, Installation And Operation Manual

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Ground Wire
L1
L2
L3
Main Power
Supply from
Disconnect Box
Main Power
Block in Unit
Factory Supplied
Wiring
Ground
Lug
Ground Wire
L1
L2
Main Power
Supply from
Disconnect Box
Main Power
Block in Unit
Factory Supplied
Wiring
Ground
Lug
Figure 8 - Single-Phase and Three-Phase System Power Connection
2.7.2 Wire and Fuse Sizing
The field-installed power supply wires and over current devices must be sized to
handle the minimum amperage of the dehumidifier without exceeding the maximum
fuse size rating. Both the minimum amperage and the maximum fuse size are printed
on the unit rating plate.
2.8 Controls and Sensors
For any with Intrinsically Safe circuits, wiring to these devices must be done only to
Intrinsically Safe terminal strip. Refer to the wiring schematic for details of these devices
and wiring parameters. The length, capacitance, resistance, and inductance of the cable
used to connect the field wiring of the Intrinsically Safe circuit shall not overload the rating
of the Intrinsically Safe barrier.
The standard Desert Aire IAQ dehumidifiers are controlled by a microprocessor controller. This
controller is designed for precise monitoring and control of air temperature and relative
humidity (RH) within a conditioned environment. A separate controls manual has been provided.
Refer to this separate manual for controller and sensor specifications, operation, and options.
The
microprocessor has the option for a duct-mount sensor, remote room sensor(s), or CO
2
sensors.
The IAQ dehumidifiers are equipped with either an internal display terminal (IDT), as part of
the controller, or a wall-mountable remote display terminal (RDT), in cases where the controller
mounted display or IDT would prove hard to view or use. See the controller manual for details
on wiring and environmental limits.
Desert Aire - QS/QV Manual