Theben TimeGuard TRT033 Manual page 5

To insert battery, first lower hinged front
cover and lever battery holder out using the
thumbnail cut out shown in Fig. 1a.
Insert the 2 x AA alkaline batteries supplied into
the battery holder maintaining the correct polarity
as shown in the base of the battery holder.
Insert battery holder connector blades fully into
their respective slots on the TRT033 and snap
battery holder into place.
Isolate 230VAC mains supply.
Incoming and outgoing wires should be 1.5mm sq.
Remove wall plate from unit, by undoing retaining
screws (see Fig. 2), and pivoting the bottom of the
unit outwards. The TRT033 can then be lifted off.
Pass the incoming wires through the opening in
the wall plate, and fix wall plate securely to the
wall, using screws (and wall plugs if necessary)
provided. The screws which secure the TRT033
to the wall plate should be at the bottom.
Allow sufficient excess cable to wire up the unit,
but not too much to make it difficult to close the
unit onto the wall plate.
Connect the conductors to the relevant terminals,
according to the wiring diagram below. Ensure
that the curved brass washers grip the conductors.
Wiring Diagram
ON COM
N L
Fig. 4
This unit is double insulated, and hence does not
need connection to earth. If earth continuity is
required, please use earth terminal on wall plate.
To reinstall the unit on the wall plate first ensure
the wall plate retaining screws are loosened
enough to clear the TRT033 body then engage
the top of the TRT033 onto the wall plate
retaining tabs (see Fig. 3), and push firmly
downwards and then inwards. There will be
some resistance from the terminals. Once in
place, secure with the retaining screws.
Restore mains to the unit after checking all
system wiring is complete.
4. Operation
Open battery access flap and press reset.
Normally current room temperature is
displayed on the screen.
To find out or adjust the set temperature,
press the + or - button once. The screen and
button border will illuminate blue as soon as
the button is pressed until 5 seconds after the
button is released. The set temperature will
flash to show it can be adjusted. If the set
temperature is ok do nothing and the display
will return to room temperature 5 seconds later.
Otherwise use the + and - buttons to get to the
required set temperature in 0.5ºC steps. If the
+ or - button is held down, the display will
advance rapidly.
Once the desired temperature is set, the
unit will revert to displaying the current room
temperature 5 seconds after the last button
press. The illumination will also turn off after
5 seconds.
A burner symbol is displayed when the
room temperature is below the set temperature
indicating that the thermostat is calling for heat
from the boiler.