V3.3 07.2016•Subject to modifi cation
UL marked actuators is optional, please contact your local Sales Representative for details.
6
• The device has been designed for use in stationary heating, ventilation and air
conditioning systems and is not allowed to be used outside the specified field of
application, especially in aircraft or in any other airborne means of transport.
• Only authorised specialists may carry out installation. All applicable legal or institutional
installation regulations must be complied with during installation.
• The connection between the control valve and the measuring tube should not be
separated.
• The device contains electrical and electronic components and is not allowed to be
disposed of as household refuse. All locally valid regulations and requirements must be
observed.
Mode of operation
The actuator is comprised of three components: characterised control valve (CCV), measuring
pipe with volumetric flow sensor and the actuator itself. The adjusted maximum flow ( max) is
assigned to the maximum positioning signal (typically 10V/100%).
The actuator control can be either communicative or analogue. The medium is detected by the
sensor in the measuring pipe and is applied as the flow value. The measured value is balanced
with the setpoint. The actuator corrects the deviation by changing the valve position. The angle
of rotation α varies according to the differential pressure through the final controlling element
(see volumetric flow curves).
Flow rate curves
Characterised control valve (CCV) with sensor-operated flow control,
2-way, with internal thread
Functional data
Closing pressure
ps
1380 kPa
Differential pressure
pmax
350kPa
Flow characteristic Equal percentage (VDI/VDE 2178), linear
Leakage rate Air bubble-tight (Leakage rate A, EN12266-1)
Pipe connections Internal thread (ISO 7-1/ EN10226-1)
Installation position Upright to horizontal (in relation to the stem)
Maintenance
Maintenance-free
Manual override Gear disengagement with push-button, can be
locked
Running time 90s
Safety Protection class IEC/EN III Safety extra-low voltage
Degree of protection IEC/EN IP54
EMC CE according to 2004/108/EC
Mode of operation Type 1
Rated impulse voltage supply / control 0.8 kV
Control pollution degree 3
Ambient temperature -30...50°C
Non-operating temperature -40...80°C
Ambient humidity 95% r.h., non-condensing
Materials Housing Brass body, nickel-plated
Measuring pipe Brass body, nickel-plated
Ball Stainless steel AISI 316
Stem Stainless steel AISI 304
Stem seal O-ring EPDM
EP..R+MP
Technical data
Safety notes
Product features
!
α
∆p
1
< ∆p
2
< ∆p
3
∆p
3
∆p
2
∆p
1
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