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XCS 633

Compensating controller with season switching
optional telemanagement

Application

For compensated or fixed point winter & summer control of flow temperature in a fan-coil or underfloor panels installation.
Exchange data with other Coster controllers by means of C-Ring serial connection.
Essential sensors: 1 outside sensor, 1 flow sensor.
Optional accessories: 1 room temperature or temperature & humidity sensor, 1 remote control.

Schematic diagram Certifications Catalogue

Code	Description	Data Sheet
XCS 633	Compensating controller with season switching optional telemanagement.	B 232

Data sheet

Wiring diagram

Accessories

Certifications

Power supply: 230V~; Consumption: 5VA; DIN 105 x 115 modular enclosure; Protection: IP 40.
Digital programming by means of four keys and alphanumeric display.
Seven 24hour programs, two 7day programs, 25 holiday periods & one special period with dates.
Manual or automatic season switching with dates or by external switch (as alternative to two digital alarm inputs).
Automatic switching BST - GMT.
Compensated or fixed point control summer and winter flow temperature:
– Modulating control of valve by 3-wire reversible actuator or On-Off control in two stages.
– Control of heating pump in relation to times and demand for heat.
– Minimum & maximum limits for flow temperature.
– Manual correction of heating curve point of origin (compensation intermediate seasons).
– Automatic correction of heating curve in relation to room temperature (Ambient Authority).
– Control of ambient dew-point for summer cooling plants with underfloor panels.
– Control boiler anticondensing temperature (closure heating valve).
– Remote control for adjusting program in use.
Relay output for centralized season switching.
Two On-Off alarm inputs (as alternative to external switch for season switching).
Alarms for plant faults and for open or short sensor circuit.

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Compensating controller with season switching
optional telemanagement