27
15.3
15.4
CIRCULATOR CHARACTERISTICS
Model
HP_OWER 250N – 350N
HP_OWER 500N
Configuration:
Integrated
Auto adaptive
Integrated
Auto adaptive
Max. absorbed power [kW]
310
305
550
450
Max. absorbed current [A]
1,37
1,33
2,05
2
EEI (energy efficiency index)
≤ 0,23
≤ 0,23
≤ 0,23
≤ 0,23
Because of the circulators have got similar prevalence curves to those integrated, please refer to Paragraph 15 for plant designing.
16
HEAD LOSS CURVES OF THE HYDRONIC CIRCUIT
We obtain the pressure head of the circulating pump from the addition of the head losses of the hydronic circuit and the available
head pressure.
For example: for the model HP_OWER 250N with nominal water flow 1,01 L/s we obtain: 30 kPa (head loss) + 88 kPa (available
head pressure)=118 kPa (circulator head pressure).
It’s advisable to use:
-
the adjustment scale on the right of the knob (constant
∆
P) in the case of use of thermostatic valves on the plant
-
the adjustment scale on the left of the knob (variable
∆
P) in the case of use of 3-way valves on the plant
Water flow [L/s]
He
ad
lo
ss [
kP
a]
