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®
Series - Installation, Operation and Maintenance | 59
ComPak
®
Series IOM
• Cmpr Module – Yes or No. Set to Yes if the dehumidifier compressor contains an overload module that
provides a contact closure signal to indicate high motor temperature.
• Hot Gas Bypass – Yes or No. Most dehumidifiers should be set to No. Contact factory service before
changing this parameter.
• Low Pressure Cutout – Yes or No. Set to Yes if the unit contains a low pressure cutout switch. Units that have
a suction pressure transducer should be set to No.
• EC Supply Fan - Yes or No. Set to yes for units with an EC supply fan (-RP models).
Aux Air Heating
This menu contains parameters that configure the auxiliary air heating system:
• Staging Offset – 1.0˚F (Range 1.0 – 2.0). The number of degrees between activation of stage 1 and stage 2.
Aux Water Heating
This menu contains parameters that configure the auxiliary water heating system:
• Below Setp By – 1.0˚F (Range 0.0 – 9.9˚F). The auxiliary water heating system will be activated when the
pool temperature drops this many degrees below set point.
• Deadband – 0.5˚F (Range 0.5 – 1.5˚F). The auxiliary water heating system will be deactivated when the pool
temperature rises this many degrees above set point.
Temperature Ctrl
This menu contains parameters that configure the air temperature control routines of the dehumidifier. Default
values are shown in bold-faced type:
• Cmpr Air Heating – Yes or No. This parameter, typically set to No, indicates whether the control routine
should use the compressor for air heating when there is no dehumidification requirement. Do not change this
parameter to Yes unless instructed by the factory service department.
• Deadband – 1.0˚F (Range 1.0 – 2.0˚F). This parameter is the base deadband used by the space temperature
control routine. The actual deadband is calculated dynamically based past system performance.
Humidity Control
This menu contains parameters that configure the humidity control routines of the dehumidifier. Default values are
shown in bold-faced type:
• DewPt Deadband: 1.0˚F (Range 1.0 – 2.0˚F). This parameter is the deadband used by the humidity control
routine. Note that humidity control is based on dew point, not relative humidity.
Water Temp Ctrl
This menu contains parameters that configure the compressor based water heating system of the dehumidifier.
Default values are shown in bold-faced type:
• Water Heat First: Yes or No. Typically set to No, this parameter indicates whether the control routine will
use the compressor for water heating when there is no dehumidification requirement. Contact factory service
before changing this parameter.
• Deadband: 0.5˚F (Range 0.5 – 1.5˚F). This parameter is the deadband used by the compressor based pool
water heating control routine.
BAS INTERFACE
This menu contains parameters that configure the building automation system interface of the dehumidifier.
Default values are shown in bold-faced type:
• Protocol: Lon/BACnet, Modbus RTU, or RS232. This parameter indicates the type of BAS interface the
dehumidifier has been equipped with.
• Unit ID: 001 (Range 0 - 254). This parameter defines the dehumidifier address on a Modbus based BAS.
• Baud Rate: 1200, 2400, 4800, 9600, or 19200. This parameter defines the communication speed of the
BAS interface port.
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