2-pipe applications
In changeover applications, the Comfort setpoints are identical for the heating and cooling sequences (w).
In 2-pipe applications with electric heater (RDF400.. and RDF460..), 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 are below the Comfort setpoints (for heating) and above the Comfort setpoints (for cooling).
They can be set via P22, P23 (Economy) and P50, P51 (Protection).
Application | Comfort | Economy/Protection | ||
---|---|---|---|---|
Heating | Cooling | Heating | Cooling | |
2-pipe | ||||
2-pipe with electric heater |
1) If electric heater is enabled when cooling (P40 = 1).
2) In case of manual changeover (P02 = 4), the first heating sequence is disabled to prevent heating (electric heater) and cooling (coil) at the same time.
W = Setpoint in Comfort
WHeatEco/Prot = Setpoint heating in Economy or Protection
WCoolEco/Prot = Setpoint cooling in Economy or Protection
YE = Electric heater sequence
4-pipe applications
In 4-pipe applications, the Comfort setpoint (w) is in the middle of the zero energy zone, between the heating and cooling sequence.
The zero energy zone can be adjusted via P41.
If manual changeover is selected, then either the cooling sequence or the heating sequence is released. Here, the Comfort setpoint is at the selected heating or cooling sequence.
Application | Comfort | Economy/Protection | ||
---|---|---|---|---|
Heating and cooling | Heating only 1) | Cooling only 1) | Heating and/or cooling | |
4-pipe |
1) Manual changeover, P02 = 4
W = Setpoint in Comfort
WHeatEco/Prot = Heating setpoint for Economy or Protection
WCoolEco/Prot = Cooling setpoint for Economy or Protection