2-pipe applications
On changeover applications, the Comfort setpoints for heating and cooling sequence are the same (w).
On 2-pipe applications with electric heater, the Comfort setpoint is either at the first heating sequence (in heating mode) or at the cooling sequence (in cooling mode).
The setpoints for Economy and Protection mode are below the Comfort setpoints (heating) and above the Comfort setpoints (cooling).
They can be set via parameters P11, P12 (Economy mode) and P65, P66 (Protection mode).
| Comfort mode | Economy / Protection mode | |||
|---|---|---|---|---|
| Application | Heating | Cooling | Heating | Cooling |
| 2-pipe |  |
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| 2-pipe and electric heater |
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1) If P13 = ON
2) In case of manual changeover (P01 = 2), the first heating sequence is disabled to prevent heating (electric heater) and cooling (coil) at the same time
W = setpoint in Comfort mode
WHeatEco/Prot = setpoint heating in Economy or Protection mode
WCoolEco/Prot = setpoint cooling in Economy or Protection mode
YR = radiator sequence
YE = electric heater sequence
4-pipe applications
On 4-pipe applications, the Comfort setpoint (w) is in the middle of the dead zone, between the heating and cooling sequence.
The dead zone can be adjusted via parameter P33.
If manual changeover is selected, then either the cooling sequence or the heating sequence is released. In this case, the Comfort setpoint is at the selected heating or cooling sequence.
| Comfort mode | Economy / Protection mode | |||
|---|---|---|---|---|
| Application | Heating and cooling | Heating only 1) | Cooling only 1) | Heating and/or cooling |
| 4-pipe |  |
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1) Manual changeover, P01 = 2
W = setpoint in Comfort mode
WHeatEco/Prot = heating setpoint for Economy or Protection mode
WCoolEco/Prot = cooling setpoint for Economy or Protection mode
YE = electric heater sequence