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Connection to the mains supply can be carried out with fixed connection or with mobile plug and
MUST be equipped with an omnipolar switch compliant with the current IEC EN standards, with a
contact opening of at least 3mm (better if equipped with fuses).
Correct connection to the ground system is essential to ensure safety of the appliance.
Wiring diagram key (fig.12)
H2:
Water temperature probe
AIR: Air temperature probe
M1:
Fan motor
M2:
Flap motor
Water 230V-50Hz solenoid valve, max 10W
Yh:
Gr :
Grille input contact
F1:
Fuse
5.1 - CONFIGURATION
The printed circuit board must be configured depending on the type of installation and based on particular
operating preferences of the machine.
The three selectors J1, J2 and J3 indicated in fig. 14 must be set as described in the next page:
J1. ON: not settable
J1. OFF: for appliances without radiant panel: heating occurs always through forced convection, with
activation active also in night mode (at reduced speed).
J2. ON: in cooling mode, the fan remains powered even upon reach the desired ambient temperature.
J2. OFF: in cooling mode, the fan id deactivated upon reaching the set temperature.
J3. ON: for appliances to be installed in 2-pipes systems: the board is set for management of a single
water valve for summer (cooling) and winter (heating) operation.
J3. OFF: for appliances to be installed in 4-pipes systems: the board is set for management of two water
valves, one for summer (cooling) operation and one for winter (heating) operation.
The three selectors can be positioned in all the possible combinations since the respective func-
tions are independent from each other.
At each reactivation, the display shows the code corresponding to the setting of the internal selectors for
5 seconds:
D1
C0
J1
OFF
J2
OFF
J3
OFF
5.1.a - Presence contact input
To terminals "A" and "B" (fig. 12) it is possible to connect a free contact, not live, of a possible pres-
ence sensor (not supplied) which, when closed, causes the deactivation of the appliance (factory setting
stand-by).
It is possible, in factory or an authorized assistance centre upon prior request of the customer, to change
this function so that the selected ambient temperature is automatically increased (in cooling mode) or
decreased (in heating mode) by a specific value "Economy Function" when the contact is closed.
To use this function, check that the terminals "A" and "B" are connected to the connector "X8".
It is not possible to connect the parallel input the one of other circuit boards; use separate
contacts.
EN - 12
C1
C2
C3
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
ON
L:
Line
N:
Neutral
S2:
Presence contact input
A:
Modbus line or presence contact input
B:
Modbus line or presence contact input
D1:
Visualization display
C4
C5
ON
ON
OFF
OFF
OFF
ON
C6
C7
ON
ON
ON
ON
OFF
ON
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