Operation; Accessories; Maintenance; General Terms And Conditions Of Sale And Delivery - oventrop Cocon QFC Instrucciones De Instalación Y Operación Para El Instalador Especializado

7 Operation

7.1 Deaeration of the system
Before initial operation, the system has to be filled and bled
with due consideration of the permissible working pressures.
7.2 Setting of the flow rate
The max. flow volume can be set with the help of the protec-
ted presetting at the handwheel (see illus. 3).
7.3 Control by use of actuators
To control the heating/cooling system during part load condi-
tions, actuators must be mounted onto the "Cocon
QFC/QGC" valves, which will vary the flow rate depending on
the controlled variable (e.g. room temperature).
7.4 Isolation
The valve can be isolated manually by turning the presetting
to the right until stop.
7.5 Correction factors for mixtures of water and glycol
The correction factors of the antifreeze liquid manufacturers
have to be taken into consideration when setting the flow rate.

8 Accessories

To determine if the valve operates within the control range,
Oventrop offers two measuring gauges:
Oventrop measuring system "OV-DMC 2"
Oventrop measuring system "OV-DMPC"
The pressure independent control valves "Cocon QFC/
QGC" can be used with the following Oventrop actuators:
Actuator with squeeze connection (DN 40 / 50)
24 V, steady 0 – 10 V
Actuator with thread connection (DN 40 - 100)
24 V, steady 0 - 10 V and 4 – 20 mA
Actuator with thread connection (DN 40 - 100)
24 V, steady 0 - 10 V and 4 – 20 mA,
with pull back spring (opening with current "off")
Actuator with thread connection (DN 40 - 100)
24 V, steady 0 - 10 V and 4 – 20 mA,
with pull back spring (closing with current "off")
Actuator with squeeze connection (DN 125 - 200)
24 V, steady 0 - 10 V and 4 – 20 mA
Actuator with squeeze connection (DN 125 - 200)
24 V, steady 0 - 10 V and 4 – 20 mA,
with pull back spring (opening with current "off")
Actuator with squeeze connection (DN 125 - 200)
24 V, steady 0 - 10 V and 4 – 20 mA,
with pull back spring (closing with current "off")
The accessories can be found in the catalogue.

9 Maintenance

The valve has to be serviced if it malfunctions.
10 General terms and conditions of sale and
delivery
Oventrops general terms and conditions of sale and delivery
valid at the time of supply and applicable.
1158010
1158020
1158021
1158022
1158030
1158031
1158032
5