oventrop TRV6 Manual Del Usuario página 6

Disposal of the thermostat
To protect the sensor liquid from escaping, the thermostat
must not be destroyed when disposed of. The thermostat con-
tains hazardous waste Dismounted/defective thermostats can
be returned to the manufacturer Oventrop. They will be dispo-
sed 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 cir-
culation 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 am-
bient 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 im-
proper assembly in a vice. Fit a new valve.
The valve cannot be shut off:
18. In most cases this is due to dirt particles on the valve
disc, for instance welding beads or rust particles. These
particles can often be removed by repeatedly working the
valve stem. To do this, the thermostat must be removed
first.
The valve insert must be replaced if the valve disc is da-
maged. The valve insert can be replaced without draining
the system with the help of the "Demo-Bloc" tool specially
developed for this purpose. If this is not successful, the
valve insert must be removed after having drained the sys-
tem so that any residue can be removed from the valve or
alternatively the valve has to be replaced.
19. The frost protection responds. The crystal symbol
responds to a room temperature of about 7°C. The valve
will therefore open as soon as the temperature drops below
this level, for instance when ventilating the room.
Subject to technical modification without notice.
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20. The thermostat is defective and must be replaced. First
test whether this is due to dirt or unauthorised tampering
of the calibration. Screw on a new thermostat and send
the old one back to the supplier for replacement. If still
under guarantee, it will be repaired or replaced free of
charge.
The valve leaks:
21. The O-ring of the gland is damaged. The valve insert has
to be replaced. This can be done under working conditions
without draining the system by using the special tool
"Demo-Bloc".
22. The valve insert is loose. Tighten.
The valve rattles:
23. Supply and return pipe are reversed.
Flow noises occur:
24. The differential pressure at the valve is too high; reduce
differential pressure (pump pressure).
cor-
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