Ov-Balance - oventrop OV-DMC 2 Operating Instructions Manual

OV-Balance: This regulation method is an advancement of the compensation method.
The advantage of the OV-Balance is that the complete supply system may be balanced by only one person.
The time required for the hydronic balance is reduced considerably provided that the installation is
structured clearly and a consecutive numbering of all regulating valves is summarised in regulating groups.
Once the numbering has been determined, it must be kept to during measurements.
Nevertheless, individual valves may be added, deleted or moved subsequently within the group, provided they
were taken into consideration during the preceding numbering of all valves.
Example of an installation with numbering of the valves:
A supply system may be composed of several regulating groups.
Each group has to be regulated according to the following sequence of regulation shown on page 21. The
group being installed at the most remote location of the circulation pump has to be regulated first. To guaran-
tee a sufficient differential pressure in the last group, the group valves preceding should be set to smaller
presetting values.
After having calculated the presetting values by using the flow meter, the valves of the regulating group are to
be set. The presetting values are stored in the flow meter and can be visualised on the display by entering the
name of the group. To do this, the measured values of OV-Balance can be listed in a print-out.
20
1 st regulating group
2 nd regulating group

OV-Balance