TFC Group STTR/F - Manual (Page 9)

Removing your old thermostat
Caution : to avoid electric shock, isolate the power
of the heating / cooling system at the main
consumer unit in your home. Read the following
instructions carefully before disconnecting the
wires.
1. Turn off your old thermostat
2. Remove the cover from the old thermostat
3. Unscrew the old thermostat from the wall plate
4. Now find the screws attaching the wall plate to
the wall, and remove them. You should now be
able to pull the wall plate a small distance from
the wall. Do not disconnect any wires yet,
simply locate the wires.
Warning: After removing the wall plate, if you find
that it is mounted on a junction box (e.g. a box
similar to one behind a light switch or electric outlet)
it may connect to a mains voltage circuit and there
is a danger of electric shock. Please consult a
qualified electrician.
Mounting the Receiver onto the wall / junction
box:
The Receiver fixing centres may align with the
screw fixings of the existing back box. In this case:
1. Remove the front cover of the Receiver.
2. Connect the wires (see wiring diagram)
3. Securely fasten the Receiver using the
machine screws provided.
4. Replace the front cover and installation is
complete.