27
ROOM THERMOSTAT INTALLATION
It is recommended, and in many cases
mandatory, to connect the boiler to a
device which monitors and regulates the
temperature in the areas served by the boiler
itself. The purpose of this device is to create
the maximum comfort and maximum energy
savings possible.
The device is set up for connection to a
thermostat WHICH CLOSES AN UNPOWERED
CONTACT WHEN THE MEASURED TEMPERATURE
IS LESS THAN THAT SET (CLOSED CONTACT =
REQUEST).
Refer to the instructions supplied by the
thermostat manufacturer for its installation.
To connect the room thermostat to the boiler
it is possible to use the supplied two-core
cable labelled “TA”. Whenever necessary,
replace the “TA” cable and connect it directly
to the slot present in the PCB case as follows:
- Remove the boiler iron cover by loosening
the 4 fastening clips
- Remove the rear instrument panel cover by
unscrewing the 4 screws
- Identify the two-pole terminal board located
on the left-hand side of the PCB. Disconnect
any cable which may be present by loosening
the terminal screws and remove it completely
- Connect the wires from the thermostat cable
to their respective slots (Pict. 29)
- Run the cable and hold it in position with the
cable grip at the edge of the case - Position
the cable, running it under the cable gripping
tabs on the side of the case
- Close the case cover with the 4 screws,
paying attention that all the cables running
out of the case are correctly positioned
- Return the electrical panel to the operational
position (with the display visible.
COMPLETELY DISCONNECT THE DEVICE FROM THE ELECTRICITY SUPPLY BEFORE
PERFORMING ANY OPERATION. USE THERMOSTATS COMPATIBLE WITH THE BOILER.
Pict. 29
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