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Summary of Contents for Micro Air Corporation FX2-CHILLER
- Page 1 FX2-CHILLER™ Digital Control Operations Manual Micro Air Corporation Phone (609) 259-2636 124 Route 526 www.Microair.net Allentown NJ 08501 (609) 259-6601...
- Page 2 Introduction: The FX2-CHILLER digital control operates onboard tempered water equipment to provide closed loop water temperature control. The FX2-CHILLER digital control is designed to operate with central type tempered water marine air-conditioning systems. Features include: High visibility Organic Light Emitting Diode display (OLED) offers superior visual characteristics compared to LCD displays.
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Page 3: Before You Start
Before you start: 1. Applying power: When power is first applied, the display will show the software revision, and then return to the last state the unit was in when power was removed. On/Off Button Up Button Mode Select Service Button Button (Unmarked) Down Button... -
Page 4: Operating Screen
Operating Screen Water Inlet Temperature Water Outlet Temperature Heating Temperature Set Point Cooling Operating Status Icon Mode Selection To change from heating to cooling or cooling to heating, tap the mode select button. Set the desired loop water temperature by tapping the up or down button. The system will provide cooling or heating as selected. - Page 5 System Status Screen AC Line voltage High Freon Pressure Switch (CLosed or OPen System Current Low Freon Pressure Switch (CLosed or OPen System Frequency Flow Switch (CLosed or OPen Viewing System Status In the ON state, press and hold the Mode select button for three seconds. The display will indicate AC line voltage, System current, AC Line frequency, and High and Low pressure switch status and Flow switch status.
- Page 6 OVER CURRENT: The total system run current exceeded the limit set in the programmable parameters. Systems may start with currents exceeding the limit but must be below the limit within two seconds after the start of the compressor. FREEZE FAULT: The closed circulating loop water temperature at the water outlet sensor is below 34°F.
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Page 7: Program Parameters
Program Parameters: There are eleven programmable parameters with their factory defaults described in this section. The table below defines the parameter descriptions along with the permitted values and default settings. To enter the program mode first put the unit in the off state. Press and hold the joystick in the center for 3 seconds. - Page 8 currents but running currents must be less than the set point. To disable this fault set the limit to 0. o Low AC line detection: When set, if the AC line voltage remains below the set value for 10 minutes, the control will turn off the compressor or heater and indicate Low AC.
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Page 9: Specifications
Specifications Set point range Cool Mode 38°F-58°F or 3.3°C-14.4°C Heat Mode 95°F to 120°F or 35°C to 48.9°C Sensor accuracy 2°F at 77°F Low voltage limit 115 VAC units 75VAC Low voltage limit 230 VAC units 175VAC Line voltage limit 240VAC Frequency 50 or 60 Hz... - Page 10 PCB-360-00F and Earlier FXII Chiller Revision: 05 March 25, 2013...
- Page 11 PCB-360-00G and later wiring diagram and configuration FXII Chiller Revision: 05 March 25, 2013...
- Page 12 Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Micro Air Corporation assumes no responsibility for errors and omissions. Neither is any liability assumed nor implied for damages resulting from the use or misuse of this product and information contained herein.
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