Gewiss CHORUS GW 16 974CB Manuel De Programmation page 63

FAN COIL WITH ON-OFF SPEED CONTROL
The operating principle involves activating/deactivating the fan coil speeds on the basis of
the difference between the fixed set-point and the detected temperature, using independent
1-bit communication objects to manage the individual speeds.
The figures below refer to the control of the speeds of a fan coil with three operating stages
for heating and cooling. The charts show that each stage has a hysteresis cycle, and each
speed is associated with two thresholds that determine its activation and deactivation.
H
EATING
fan OFF
A -
IR COOLING
fan OFF
set-point
valve OFF
USER INSTRUCTIONS
2heat
3heat
valve ON
valve
1cond
valve ON
63
set-point
1heat
valve
valve OFF
2cond
3cond
E
N
G
L
I
S
H