6
Dismounting the clock thermostat
¾
Using a screwdriver, loosen the front panel at the two side
and bottom openings
.
¾
Then release the catches on the left and right and remove
the upper part of the housing
.
¾
Loosen the plug-in connectors and press the circuit board
carrier together at the top and bottom
.
¾
Remove the circuit board carrier through the front.
4. Connection
•
The power supply from the thermostat to the boiler is
provided via OpenTherm.
•
The two-wire connection (OpenTherm) is not polarised,
i.e. the wires can be connected to the boiler as required.
!
Disconnect the boiler from mains supply before connec-
ting the thermostat.
!
Faulty connections will damage the device.
!
Without interference, the bus line can be extended up to
50 m.
!
In order to eliminate the possibility of EMC interference,
always lay the feed of the supply voltage separate from
the mains cables.
