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General Information VARC Chiller Controls
Output I/O # Board I/O Description
Electric Heat (EH) DO-4 NO4 Provides switched power to the contactor coils for electric heat.
Not used. DO-5 NO5 This output is not used.
Not used. DO-6 NO6 This output is not used.
Fault Alarm DO-7 NO7/NC7 Provides a Normally Open (NO) contact point, which is closed for any fault condition. You can
use this output to power a light, relay, or interface to a ship’s monitoring system. The output on
this terminal is 230 VAC.
2.2.4 Analog Outputs
The analog outputs are not used.
Output I/O # Board I/O Description
Not used AO-1 Y1 This output is not used.
Not used AO-2 Y2 This output is not used.
Not used AO-3 Y3 This output is not used.
2.3 Default Parameters
The following table lists factory defaults for the compressor, inverter, and econo mode setpoint parameters (for other
VARC models, contact the factory).
Model Compressor Inverter Part Number
VARCX48 5KD184XAB21 PSD1* 12 Amp
VARCX60 TNB306FPGMT PSD1* 12 Amp
VARCX72 5JD420XAA22 PSD1* 16 Amp
VARCX120
208–230V / 1PH
SIAM ANB66FVCMT PSD2* 30 Amp 200V
208–230V / 3PH
SIAM ANB66FVCMT PSD2* 40 Amp 200V
380–460V / 3PH
SIAM ANB66FVQMT PSD1* 40 Amp 400V
The following table lists factory defaults for all other parameters (for other VARC models, contact the factory).
Parameter VARCX48 VARCX60 VARCX72 VARCX120 Data Type
General Settings
Cooling Setpoint CCW Return 48 48 48 48 Degrees F
Cooling Setpoint CCW Supply 43 43 43 43 Degrees F
Heating Setpoint 110 110 110 110 Degrees F
Econo Mode 65% 65% 65% 65% Percent
Superheat Setpoint
Cool and Heat 10 10 10 10 Degrees F
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