oventrop Cocon QTZ Einbau- Und Betriebsanleitung Für Fachpersonal Seite 10

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Volume flow V [l/h]
Illustr. 5.4 Characteristic line of the regulating unit
"Cocon Q"
Ilustr. 5.5 Differential pressure measurement
Differential pressure p1-p3 [bar]
Illustr. 5.6 Volume flow characteristic line for different
presettings
5.2 Markings
Information on the body:
OV
DN
PN
5.3 Application
The Oventrop pressure independent control valves
"Cocon QTZ" are used for flow and room temperature
control in central heating and chilled ceiling systems
with circulation pump.
The Oventrop pressure independent control valves
"Cocon QTZ" can also be used with Oventrop ther-
mostats and temperature controllers.
10
Oventrop
Size
Nominal pressure
The "Cocon QTZ" valves can be used with the follow-
ing actuators (M 30 x 1.5):
Actuator Voltage
2 point
101 28 16/26*
24 V
101 29
Elektro-
thermal
101 28 15/25/17*
230 V
101 29 15/25
24 V
230 V 101 27
Elektro-
motive
EIB
LON
* Actuators with piston strokes of less than 4 mm.
** The actuators may only be energized after modifi-
cation of the presetting.
5.4 Min. differential pressure for valve design
The minimum required differential pressures p1-p3
across the valve can be obtained from the chart be-
low.
DN 15/DN 20 (150 l/h-1050 l/h)
DN 20 (180 l/h-1300 l/h)
Illustr. 5.7 Differential pressure / Nominal setting
Explanation of chart:
Referring to the valve with integrated flow control, the
required minimum differential pressure changes de-
pending on the nominal setting. The mathematical in-
terrelationship is considered in the chart.
Regulation behaviour
3 point Proportional
101 29 51
16/26* (0-10 V)*
101 27 00/05
101 27 01
(0-10 V)*
10* 101 27 03*/**
115 60 65/66*
115 70 65*
Nominal setting [l/h]
Nominal setting [l/h]