The diagrams below show the control sequence for modulating PI control.
XpH Proportional band "Heating"
(P050)
w Room temperature setpoint
XpC Proportional band "Cooling"
(P052)
YHC Control command "Valve" or
"Compressor"
XpR Proportional band "Radiator"
(P054)
YR Control command "Radiator"
w
D
Setpoint differential (P056)
The diagrams only show the PI thermostat’s proportional part.
For setting sequence and control outputs, see Application overview [➙ 42],
Sequence overview (setting via P001) [➙ 75] and Control outputs [➙ 99].
Parameter P256 (RDG26..KN) sets the heating flow limitation when using a PICV.
See Additional functions [➙ 47].
Modulating control:
3-position, PWM or
DC 0...10 V
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