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26
THERMOSTATIC CONTROL FOR HEATING
In an exactly analogous manner, the thermostatic control for heating permits selecting
between a 2-point with hysteresis control and a PI control with pulse width modulation.
In this case, the flow diagram for the first one is as shown in Figure 14.
Figure 14.
Grille behaviour during the 2 point with hysteresis" thermostatic control for heating
T
REF
< T
SETPOINT
+ H
Lower
Yes
(“it is cold”)
No
(“it is hot”)
Grille is open?
Grille is closed?
Do nothing
Yes
Yes
No
Open grille
No
Close grille
