Operating Mode - Gewiss GW 20 853 Manual De Instrucciones

OPERATING INSTRUCTIONS
Based on the devices connected (fan and/or solenoid valve) and the terminal (n° 3
or n° 4) to which the wire for the fan operating mode setting is connected, the ther-
mostat can operate in the following modes:
1) thermostat-controlled solenoid valve and continuous fan operation (fig. a)
2) thermostat-controlled solenoid valve and fan operation (fig. a)
3) thermostat-controlled fan operation only and solenoid valve not connected (fig. B)
In all cases, 3 different fan speeds can be selected by a switch on the front panel.
Heating or cooling mode can also be selected by a switch on the front panel.
Thermostat
Fig. a
Example of thermostat installation with thermostat-controlled solenoid valve and fan control
(continuous or thermostat-controlled)
Thermostat
Fig. B
Example of thermostat installation with fan control only (continuous or thermostat-controlled)
The thermostat operates with proportional temperature control, within a 1°C-band
width, as shown in the figure.
Regulation is carried out by
switching the load on and off for
variable time intervals, depen-
ding on the difference between
the temperature setpoint and
the temperature reading.
o p E r a t I N g m o D E
Fan-coil
Thermostat
Fan-coil
°C
19
19
Thermostat
Fan-coil
Load
Fan-coil
Proportional
band
(width 1°C)
Time
E
N
g
l
I
s
H