Siemens RDF302 Documentation page 29

4-pipe applications
Heating and cooling
Application
4-pipe
Y
Siemens
Building Technologies
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
Heating only
Y
W
T
1) Manual changeover, P01 = 2
W = setpoint in Comfort mode
W = heating setpoint for Economy or Protection mode
HeatEco/Prot
W = cooling setpoint for Economy or Protection mode
CoolEco/Prot
YE = electric heater sequence
RDF302 Basic documentation
1)
Cooling only
Y
W W
T
Economy /
Protection mode
Heating and/or
1)
cooling
Y
T W
W
CoolEco/Prot
HeatEco/Prot
CE1P3079en
07 Dec 2011
T
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