oventrop TRV9 Manual De Instrucciones página 15

The limitation can be cancelled by sliding the
limiting clips out of the lower and upper position
and by fitting them back into the "parking
position".
Locking the temperature setting
If the temperature setting shall be locked to
figure "3" (about 20°C), i.e. unauthorized
tampering shall be prevented, the thermostat
must be turned to this temperature setting.
The two limiting clips must be pulled out of the
"parking position" and must be pushed into the
grooves immediately before and after figure
"3".
The locking can be cancelled at any time by
sliding the limiting clip out the grooves and by
fitting them back into the "parking position".
The thermostat can be locked to any graduation
line, figure or the frost protection symbol.
Disposal of the thermostat
To protect the sensor liquid from escaping, the
thermostat must not be destroyed when disposed
of. The thermostat contains hazardous waste!
Dismounted/defective thermostats can be
returned to the manufacturer Oventrop. They
will be disposed of professionally.
Check list for faults
The required temperature is not reached or
maintained:
1. The flow temperature is set too low.
2. The circulation pump is not switched on.
3. The circulation pump or the flow temperature
is controlled by a separate electric room
thermostat.
4. The pump output is set too low.
5. The flow direction of the pump is wrong.
6. The heating riser is heavily throttled or shut
off.
7. With gravity fed heating systems, the
installation of a circulation pump might be
necessary. Gravity systems are very
sensitive to the presence of air in the system.
8. The radiator is covered by curtains, panelling
etc. Use a thermostat with a remote sensor.
9. Temperature at the thermostat differs widely
from the ambient temperature due to poor
location. Use a thermostat with remote
sensor.
10. The remote sensor is badly sited.
Recommended height is about 1 m above
floor level.
11. The radiator selected is too small for the
size of the room.
The thermostatic radiator valve does not
function:
12. The thermostat is not screwed tightly onto
the valve.
13. The capillary of the remote sensor or the
remote control is kinked or flattened. Use
a new thermostat and install carefully!
14. If a strainer is used, has it become blocked?
Remove valve, flush pipe thoroughly, clean
strainer and re-install.
15. Air is reducing circulation in the radiator.
Vent the radiator.
16. Air is interfering with circulation in the
heating system. Fit an automatic airvent in
a suitable position.
17. The valve seat is distorted, for instance as
a result of improper assembly in a vice. Fit
a new valve.
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