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Further details regarding the individual steps
Example diagram for determining the
required pump setting for Vito-
clima 200-C, type OC212
A
Range of the required flow
rate
Explanations to the example diagram
Required heating or cooling water throughput
(min./max.) for Vitoclima 200-C, type OC208:
Calculated available delivery pressure:
Result:
Starting from 0.35 bar ( 3.5 m head) in this diagram, the points of intersection
B and D with the pump curves for stage 1 and 3 lie outside the range of the
required flow rate.
The point of intersection C with the pump curve for stage 2 lies within the
range of the required flow rate.
Therefore, set the pump to stage 2.
Adjusting the pump rate
Danger
Touching 'live' components can result in the transfer of dangerous body
currents.
Isolate the unit from the power supply, check that it is no longer 'live' and
safeguard against unauthorised reconnection.
Commissioning, inspection, maintenance
(cont.)
BCD Points of intersection deliv-
ery pressure/pump curves
(1)
Stage 1: lowest throughput
(2)
Stage 2: average through-
put
(3)
Stage 3: highest throughput
Heating mode: 1162/1742 l/h
Cooling mode: 1270/1903 l/h
1. Remove the pump cover (for pump
position, see D in the figure on
page 5).
2. Position rotary selector D to the
required pump stage (A = stage 1;
B = stage 2; C = stage 3).
3. Fit the pump cover.
0.35 bar
17
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