2
2016 Oventrop
“Aktor T ST”
Electrothermal actuator (0-10 V)
Stroke – control voltage characteristic line
(max. piston stroke without valve)
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The actuator is mounted with the help of the valve adapter, no
tools are required. The valve adapter is manually screwed onto
the valve and the actuator is fixed to the adapter by use of the
plug-in connection.
The Oventrop electrothermal actuator can be installed in any
position but a vertical (stroke index pointing upwards) or
horizontal installation is preferable. In case of vertical downward
installation, special circumstances (e.g. dirt water) may reduce the
service life.
Application:
The Oventrop electrothermal actuator (0-10 V) is used for heating,
ventilation and air-conditioning. In combination with the Oventrop
thermostatic radiator valves or the regulating valves “Cocon/
Hycocon” and the Oventrop room thermostat or a central
controller in the building technology, the actuator allows an
individual room temperature control.
The actuator can be combined with the following Oventrop valves
with connection thread M 30 x 1.5:
- Thermostatic radiator valves, all series (except for “Series
ADV 9, ADV 6 and KTB”)
- Three-way conversion valves
- Distributors/collectors for surface heating systems (please
observe ambient temperature within the cabinet)
- Regulating valves “Cocon 2TZ / QTZ”
- Regulating valves “Hycocon ETZ/HTZ”
- Three-way diverting and mixing valves
Function:
The Oventrop actuator works with an expansion type working
element which is heated electrically by a PTC heating element. A
silent operation and low power consumption are thus guaranteed.
Due to the “First-Open” function, the actuator is supplied open
with current “off”. This allows the operation of the heating system
during construction work even if the electric wiring of the
individual room temperature control has not yet been terminated.
To guarantee correct functioning of the actuator, it should be
fitted to the valve before initial operation.
The “First-Open”
function is released automatically by switching the operating
current of 24 V AC (more than 10 min.) on for the first time. (This
happens only once during initial operation. After initial operation,
the actuator immediately switches to control operation each time
the operating current has been switched off.) After initialisation,
the upper valve lift position and the closing point of the valve are
determined by the actuator and the active control voltage range
is adapted to the determined valve travel. The actuator now
switches to control operation. The stored values are monitored
during operation, are adapted if required and are used for control
demands and positioning after having switched off the operating
current. This way, an optimum adaptation to the respective valve
is guaranteed.
If a control voltage of 0.5 – 9.5 V DC is applied after the closing
point has been determined, the actuator opens the valve (after
termination of the idle time) by lifting the spindle proportionally to
the control voltage. Within the range of 0 – 0.5 V, the actuator
remains in the idle position to ignore ripple voltage caused by long
cables. Within a range of 9.5 and 10 V, the spindle travels the
entire 5 mm to check the valve travel which is recognised
automatically. By reducing the control voltage and after
termination of the rest period, the valve is closed constantly by
the closing pressure of the pressure spring.
If the Oventrop actuators are used for room temperature control,
it is recommended to carry out the room temperature setback via
the room thermostat.
If for some reason a setback of the flow temperature is required
during night hours or at other times, a setback of the room
temperature via the room thermostat should be carried out
additionally.
Accessories Item no.:
Room thermostat (heating and cooling) 1152151
Room thermostat (heating and cooling) 1152153
with fan drive
Reinforcing cap 1012450
Valve adapter, M 30 x 1.0 1012890
Valve adapter, high model, M 30 x 1.5 1012462
Room thermostat
(heating and cooling)
with one proportional outlet 0-10 V
each for heating and cooling (can be
used for four pipe systems).
Setting of the nominal value via
the rotary knob, adjustable
idle time. Item no. 1152153
with additional three-stage fan
drive.
Reinforcing cap
to protect the electrothermal
actuators against vandalism.
Valve adapter
connection thread M 30 x 1.0
(for Oventrop valves manufactured
up to 1998)
Valve adapter
high model,
connection thread M 30 x 1.5
(11 mm higher than standard)
Stroke – control voltage characteristic line with recognised valve
spindle lift (e.g. “Series A”)
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Control voltage [V]
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Control voltage [V]
P
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[
m
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P
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(V
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Tr
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Subject to technical modification
without notice.
Product range 1
Gedruckt auf chlorfrei
ti 334-EN/10/MW
Edition 2016
gebleichtem Papier.
OVENTROP GmbH & Co. KG
Paul-Oventrop-Straße 1
D-59939 Olsberg, Germany
Phone +49 (0) 29 62 82-0
Fax +49 (0) 29 62 82-450
E-Mail [email protected]
Internet www.oventrop.de
For an overview of our global presence
visit www.oventrop.de.
