With this conversion set the "Alpha 233B" or "WDP Alpha 233B" can be replaced.
The adapter is connected to the existing wiring harness - in the illustration with the adapter set these are the left 3x connection terminals (2x green, 1x grey) and the 4x connection terminals (3x red, 1x blue) shown on the right in this illustration are connected to the theta control.
The theta control works with the same temperature sensors as the alpha control.
Functions of the Theta control:
> Weather-compensated boiler temperature controller for heating and hot water operation for one unmixed heating circuit and two further heating circuits for controlling mixers or mixing valves (3-point PI controller)
> integrated pump logic
> cascadable
> Large operating keys with unique assignment
> centrally arranged rotary knob with push-button function
> large, illuminated, high-contrast LCD display
> clear menu navigation, unmistakable symbols
> clearly labelled keys without double functions
> the quick-select buttons enable convenient setting of day and night setpoint temperature, hot water temperature, operating modes and switching times
> quick overview of the current heating situation via the information button
Delivery contents:
1x adapter KSF Alpha-Theta
1x controller Theta N 233B
1x exterior sensor AF 200
1x boiler immersion sensor KVT20/2/6
1x storage temperature sensor KVT20/5/6
2x flow contact sensor VF202
1x BL X1, 16-pin clamp
1x BL X2, 4-pin clamp
1x BL X3, 9-pin clamp
1x BL X4, 9-pin clamp