Circulating Pump - DeDietrich 24 Installation And Service Manual

en
5 Before installation
5.3

Circulating pump

The system uses a high-head, modulating pump that is suitable for use on any type of one- or two-pipe heating installation. The
automatic air vent valve built into the pump body enables fast venting of the heating system.
Operation of the pump in DHW mode —> 100% fixed.
To prevent flow noise, you must pay attention to the hydraulic design of the heating installation.
Fig.100 Graph showing residual pump head based on the water flow
7
6
5
4
3
2
1
0
0 200 400
Tab.101 Graph description
Q Flow volume
H Residual pump head
85 % Minimum modulation value in heating mode
100% Maximum value in heating mode
Operation of the pump in heating mode —> modulating from 85% to 100%.
162 INIDENS
A
100%
85%
600 800 1000 1200
Q [l/h]
7
6
5
4
85%
3
2
1
0
0 200 400 600
Q [l/h]
B
100%
800 1000 1200 1400
BO-0000297
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