Before starting any job on the system, turn the master switch o . Operations on the heating system and the electric installation must only be performed by quali ed personnel and/or
manufacturer's technicians. Moreover, the Directives of the body supplying the electricity must be complied with. Before connecting to the electric current, check the voltage (230V/50
Hz). Bad installation can be dangerous and lead to the warranty becoming null and void. Avoid any modi cation to the appliance as it may have negative consequences on system safety.
Connect the additional board to the boiler, using two cables between AUX in the boiler and OC-+ in the additional board. After the electrical connections to the system devices have
been made, power the additional board with 230V via two cables. The loads and the additional board must be adequately protected.
Boiler
+ Red
- Black
Fix the additional board to the wall suitably, possibly inside an electric control board.
Do not pull, disconnect, twist electric cables leaving the additional board.