1) With integrated ingniter on the board, this control board has the same size with BGL-178. There is one big SPAIN rotary switch and four adjusting potentiometer on the board. The big adjusting Rotary switch is used to adjust shutoff, summer, winter and reset. Two of the adjusting potentiometers are usedto adjust DHW and CH temperature, the other two adjusting potentiometers  are used to adjust minimum and maximum power value.
2) Moreover, the control boards has a 8-digit dip switch can select different kind of combi boiler. This control board can operate with LCD display board to provide end-user the most comfortable function or not connected with any display board and directly operate on the board.