How to choose pump power and size
Selection order: (1) job circulation vs water, (2) DN connection, (3) flow/head from the project or old pump label, (4) model. Parameters: flow/head.
Practical examples
DN15 vs DN25: Evosta DN15 vs Evosta DN25. Power/curve: Evosta 3, PICO 1-4 vs PICO 1-6.
What not to do
- “I’ll take the biggest so it is enough.”
- Ignoring installation length 130/180 mm.
- Mixing a water-supply pump with circulation — explanation.
main guide · Pumps · heating map.
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