
Functions
Fan control
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Fan control is set to enable by default (P350 = 1), if the thermostat is set with
control sequence “H/C ceiling with PICV and 6-port ball valve as changeover”. For
this application, where the combi valve PICV controls the flow rate and the 6-port
ball valve works as changeover heating / cooling, fan control can:
●
Also be disabled (P350 = 0)
●
Run only in heating (P350 = 2) sequence
●
Run only in cooling (P350 = 3) sequence
For this application, only DC fan control is available at output Y50.
Fan operation with combi
valve PICV and a 6-port
ball valve as changeover