Homematic IP HmIP-WTH-B-2 Installation And Operating Manual page 41

If you want to add a wall thermostat to an existing device group
including a radiator thermostat and a window contact, you first need
to pair the wall thermostat to the radiator thermostat. Afterwards,
you can pair the wall thermostat with the window and door contact.
If you are using several devices in one room, you should pair all
devices with each other.
5.1.1.1 Pairing with a Homematic IP Floor Heating Actuator
If you want to pair the wall thermostat with a Homematic IP Floor Heating
Actuator, the pairing mode of both devices has to be activated first. To do
this, proceed as follows:
• Select the required channel of the floor heating actuator and
activate the pairing mode using a long button press. The device
LED starts to flash orange. For further information, please refer to
the user manual of the floor heating actuator.
Open the battery compartment (G) using a slotted screwdriver to
•
loosen the wall mouting plate (see figure 3).
• Remove the insulation strip from the battery compartment of the
wall thermostat.
Press and hold down the system button (C) of the wall thermostat
•
for at least 4 seconds to activate the pairing mode. The device
LED (C) flashes orange (see figure 4).
• If pairing was successful, the LED lights up green.
5.1.1.2 Pairing with other Homematic IP devices
To connect the wall thermostat with another Homematic IP device,
the pairing mode of both devices has to be activated. To do this, please
proceed as follows:
Open the battery compartment (G) using a slotted screwdriver to
•
loosen the wall bracket (see figure 3).
• Remove the insulation strip from the battery compartment of the
wall thermostat.
Start-up
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