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Siemens
RDG400KN,RGD405KN Basic documentation
CE1P3192en
Building Technologies
2017-02-17
Single-duct and
radiator
--
Single-duct and
heating/cooling
coil
Water sequence
3.6.2 Hysteresis: Behavior of heating and cooling
∂
The control sequences heating and cooling depend on the heating and cooling
setpoints and the room temperature
∂
The thermostat remains in the heating sequence as long as the room
temperature does not reach the cooling setpoint
∂
The thermostat remains in the cooling sequence as long as the room
temperature does not reach the heating setpoint
The value of the output and the sequence as a function of the room temperature is
shown in the following diagram in the case of a heating and cooling system:
0
TR
Wheat
Wcool
100%
0 = Cool
1 = Heat
3
1
71
D
0
1
Wheat = current setpoint heating
Wcool = current setpoint cooling