Grundfos ALPHA SOLAR B, Инструкция по установке и эксплуатации

Страница: 20 / 25

14. Performance curves
14.1 Guide to performance curves
Each pump setting has its own performance curve.
A power curve, P1, belongs to each performance curve. The power
curve shows the pump power consumption in watt at a given
performance curve.
14.2 Curve conditions
The guidelines below apply to the performance curves:
•
Test liquid: airless water.
• The curves apply to a density of 983.2 kg/m
3
and a liquid
temperature of 20 °C.
• All curves show average values and must not be used as
guarantee curves. If a specific minimum performance is
required, individual measurements must be made.
• The curves apply to a kinematic viscosity of 0.474 mm
2
/s
(0.474 cSt).
• The conversion between head H [m] and pressure p [kPa] has
been made for water with a density of 1000 kg/m
3
. For liquids
with other densities, for example hot water, the outlet pressure
is proportional to the density.
• Curves are obtained according to EN 16297.
• It is not obligatory to show P
L,Avg
, but it gives an indication on
the yearly expectable average power consumption.
• Maximum curves are limited by speed and power
20
English (GB)