DC1 FCU Controller
The DC1 is a full featured FCU controller. The DC1 will operate "stand alone" or as an integral part of a building management system (BMS). The control parameters, such as damper stroke time, can be set by the BMS and are stored in non volatile memory (EEPROM) to prevent them from being lost when the power is removed. All connections to the DC1 are by means of plug-in screw terminal connectors which provides for quick, convenient installation, commissioning and maintenance. The heater current valve can optionally be upgraded to a 3kW capacity by means of a larger external heatsink.
Features
- PI Control
- 3 Point valve, pulse proportional value or 1 step cooling output (24 VAC)
- Pulse proportional heater control signal 924 VDC for external current valve)
- BMS communications support (Siemens Building Technologies System 600 compatible)
- External "dial" setpoint input
- Load shedding function for maximum demand limiting
- Fan on /off control output
- Fan run proof input
- Heater relay (Safety in case triac fails)
- Second temperature sensor input (Monitor only)
- On / Off control input
- Built-in transformer
DC1 Typical Application
