Specifications on this page are taken from the Prolon Fan Coil Unit Controller datasheet, REV 7.4.0 / PL-DATA-C1050FCU-C/F-EN.
The PL-C1050-FCU controls 2-pipe and 4-pipe hydronic fan coil units from a single space temperature sensor. PI control loops modulate the heating valve rather than cycling it.
On 2-pipe systems it changes over automatically between heating and cooling based on water temperature, and runs automatic purge cycles to verify water temperature and prevent stagnation in the coils.
A separate auxiliary heat output is available, configurable as on/off or modulating PWM, for a backup or secondary heat source. Fan control supports multiple speeds, and unoccupied mode sequences are configurable.
Best For
- 2-pipe and 4-pipe hydronic fan coil units
- Units controlled from a single space temperature sensor
- Fan coils with a separate auxiliary heat output, on/off or modulating PWM
Key Features
2-pipe automatic changeover
Automatic changeover between heating and cooling on 2-pipe systems, based on water temperature.
Coil purge cycles
Automatic purge cycles verify water temperature and prevent stagnation in the coils.
Modulating heating valve
Modulating valve control for heating, with on/off control available for heating and cooling.
Separate auxiliary heat output
A separate auxiliary heat output is available, configurable as on/off or modulating PWM.
Multi-speed fan control
Multi speed fan control options, with configurable unoccupied mode sequences.
Self-resetting fuse protection
4 digital outputs capable of source or sink operation and 1 analog output, all equipped with self-resetting fuses.
Technical Specifications
| Specification | PL-C1050-FCU Value |
|---|---|
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Power | 2 VA (consumption), 32 VA (input) |
| Inputs |
|
| Digital Outputs | 4 triac outputs, 10-30 VAC source or sink, 300 mA max (self-resetting fuse) |
| Analog Output | 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC, 40 mA max (self-resetting fuse) |
| Indication Lights (LED) | State of each output / Communication / Power / State of microprocessor |
| Microprocessor | PIC18F6722, 8 bits, 40 MHz, 128 KB FLASH memory |
| Casing | Molded ABS, UL94-HB |
| Communication | Modbus RTU (RS485) up to 127 nodes |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Connection | Removable screw-type terminal blocks (16 AWG max) |
| Dimensions | 6.2 in x 5.2 in x 2.5 in (157 mm x 132 mm x 64 mm) |
| Weight | 0.85 lbs (0.39 kg) |
| Environment | -4 to 122 °F (-20 to 50 °C), non-condensing |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
Documentation
Frequently Asked Questions
- Controller Type:
- Fan Coil
- Digital Outputs:
- 4
- Analog Outputs:
- 1
- Analog Inputs:
- 3
- Digital Inputs:
- 1
- Communication:
- Modbus RTU (RS485)
