7 Operation
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Calio Pro / Calio Pro Z
1157.820/01-EN
7.2 Operating modes
7.2.1 Information on settings
For common applications, such as two-pipe radiator heating systems, Dynamic
Control or Proportional-pressure Control (Δp‐v) are the recommended operating
modes. These operating modes offer an extended control range with additional
potential savings compared to Constant-pressure Control (Δp-c). Depending on the
balancing of branch circuits, undersupply may occur at a consumer installation.
Constant-pressure Control operating mode (Δp‐c) can optionally be selected for
underfloor heating systems, for example. If noises are audible at low flow rates,
select the Proportional-pressure Control operating mode (Δp-v).
The setting of the discharge head setpoint depends on the piping curve of the system
and on the heat requirements. As standard the pump set is pre-set to Proportional-
pressure Control (Δp-v) operating mode.
Table 16:
Default discharge head setpoint
Size
Pre-set discharge head setpoint
[m]
Single pump
25-40
2
25-60
3
25-80
4
25-100
5
30-40
2
30-60
3
30-80
4
30-100
5
30-120
6
32-40
2
32-60
3
32-80
4
32-100
5
32-120
6
40-40
2
40-60
3
40-70
3,5
40-80
4
40-90
4,5
40-100
5
50-40
2
50-60
3
50-80
4
50-90
4,5
65-60
3
Twin pump
30-60
3
30-100
5
32-80
4
32-120
6
40-80
4
40-100
5
50-80
4
