Step 4: Switching Between 1 Heating Stage and 2 Heating Stages Modes
The fan coil unit can operate with one heating device or with two heating devices. This needs to be configured with the 2nd section of the CFG DIP switch.
2 Stages of Heating in 4-Pipe Fan Coil Unit
2 stages of heating in 4-pipe FCU installation
For more information on configuring stages of heating, check the iSMA-B-FCU Application manual.