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Setting the flow rate
Commissioning
7.2.2
Determination of volume flow
Adjusting diagram
The primary side flow rate is set with the restrictor on
the primary valve.
Example:
A primary side flow rate of 0.52 m³/h is required. On
the basis of the adjusting diagram, a value of 3.8
rotations is obtained for heat transfer station type 15
(or type 30). The restrictor must, therefore, be opened
about 3.8 rotations from the closed position.
Fig. 7-1: Adjusting diagram
Adapting the flow rate with the restrictor is described in
the following.
Setting primary side flow rate
1. Carefully remove the actuator from the prima-
ry valve.
Fig. 7-2: Actuator
2. Remove the safety ring for the setting.
Fig. 7-3: Safety ring
3. Close the restrictor (knurled screw with recess for
positioning) completely by turning clockwise.
Fig. 7-4: Restrictor
