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2
Relay Wiring
1(NC),2(COM),3(NO)
Heating:
connect the two connection wires of the device to be controlled to terminals No. 3 (NO) and No. 2 (COM),
i.e. to the normally open terminals of the relay
Cooling:
the two connection wires of the cooling equipment should be connected to terminals No. 2 (COM) and No. 1
(NC), i.e. to the normally closed terminals of the relay.
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To prevent electric shock, replace the inner cover removed for the connection of wires after the assembling
process has been completed.
The device must be installed and connected by a qualified professional. Always follow the manufacturer's
instructions when connecting the thermostat to any heating or cooling appliance.
The voltage appearing at terminal No. 1, No. 2 or No. 3 depends only on the system being controlled, therefore the
dimensions of the wire are determined by the type of the device to be controlled. The length of the wire is of no
significance.
Running Mode
Hold the dial button for 5 seconds to access the system running mode switch, then turn the dial to choose
different mode between:
HEAT (Heating): adjust the temperature by turn the dial
COOL (Cooling): adjust the temperature by turn the dial
OFF (Frost Protection): it will start heating when the room temperature is under 7°C
Then press the dial again to confirm the running mode or wait for 10 seconds to confirm the setting automatically.
