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Appendices
Climate Control System
DryGair Energies Ltd
.
44
Appendix B.
Climate Control System
This section describes how to connect the DryGair dehumidifier to a climate
control system, for operating and controlling the unit by computer software.
Note
All settings in the climate control system should be performed by a climate
control expert, with an understanding in communication.
B.1.
DryGair Systems for Dehumidification (only)
This configuration requires connecting 24 VAC cables to the terminal block,
located at the top right corner of the electrical compartment.
Relays:
a. R1
– Start/Stop Relay
b. R2
– Drying Relay
Terminal Block
a. TB 41-42
– Start/Stop
b. TB 43-44
– Drying Delay
c. TB 45-46
– Fault Indications
Figure 9-2. Climate control relays
•
Terminals 41 and 42
: Remote
start
and stop
command
to the unit
(digital output from the computer).
Turning the unit on turns the unit's fans on.
•
Terminals 43 and 44
: Remote
drying
command to start and stop
dehumidification (digital output from the computer).
This signal turns the dehumidification on/off, based on the humidity
sensor data and the humidity setpoint in the climate control system.
Note
In remote mode, the unit does not use its own humidity sensor. It uses the
climate control computers sensors.
▪
Drying on
: When dehumidification is required (e.g., high humidity),
the unit will receive a signal to turn on dehumidification. This turns
the unit's compressor on, and moisture is removed from the air.
Note:
To operate the dehumidification, the signals must be sent to
both the compressor and the fans.
▪
Drying off
: When drying is not required (e.g., low humidity), the
dehumidification will turn off and the circulating fans will continue
operating (circulating air) while the compressor is off. This is also the
option for using the fans during the day when the room is open.
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2