Wiring diagram key "MANAGEMENT OF THE FAN COIL WITH DC MOTOR THROUGH
4-SPEED THERMOSTAT (J1 - OPEN)" (fig.X2)
H
O:
2 water temperatures sensor (op-
2
tional)*
M1:
DC motor
M2:
Flap motor
S1:
Intake grille safety microswitch
(to be connected only on some
models, removing the bridge)
F - N: Board supply 230V - 50Hz
Y1:
Solenoid valve 230V - 50Hz, 1A
CFG: Jumper open to select the mode
'contacts'
COM: Common
X2
M1
230V
50Hz
To the ground connec-
tion of the fan coil
*
The water sensor is optional: if it is connected, the board will allow operation of the fan only with water tem-
perature suitable for the selected mode of operation (higher than 30°C in winter mode and lower than 20°C in
summer mode). If it is not connected, the board shall not carry out any check of water temperature.
** When the use of the water probe is envisaged, it is NECESSARY to select Winter/Summer mode by means
of the contact E/I.
Open = Winter
*** The fan operation is enabled only when the EV input is closed. Follow the connection diagram to the EV input
even if the valve management is not required. When the EV input is closed, only output Y1 is energised.
If the E/I contact is not available, disconnect the H
EN - 22
J1
H2O CFG
+V10-
SW1
LED
N
F
SV
E
EV:
Solenoid valve management / Fan
enabling ***
MAX: Max speed
MED: Medium speed
MIN:
Minimum speed
SIL:
Super-minimum speed
E / I:
Summer/Winter mode selection
(Open: Winter)
Led:
Mode/status indication
SW1: Machine configuration selector
C:
Hot/cold generator consent contact
*
H2O
Open
SEL2
SEL1
MOUNT
S1
Y1
CV
Closed = Summer
O probe.
2
M2
C