Available Pressure - Ariston COMPACT M NET R32 Technical Instructions For Installation

4.1.5

Available pressure

Make sure that the available pressure is not lower than the
head loss of the entire hydraulic system.
The curves in the pictures below shown the available pressure
on the flow from the outdoor unit.
NIMBUS 35 M EXT R32 - NIMBUS 50 M EXT R32
KPa
90
80
70
60
50
40
30
20
10
0
0 500 1000
NIMBUS 80 M EXT R32 - NIMBUS 80 M-T EXT R32
KPa
90
80
70
60
50
40
30
20
10
0
0 500 1000
NIMBUS 120 M EXT R32 - NIMBUS 120 M-T EXT R32 - NIM-
BUS 150 M EXT R32 - NIMBUS 150 M-T EXT R32
KPa
90
80
70
60
50
40
30
20
10
0
0 500 1000
1500 2000 2500 3000
l/h
Fig. 48
1500 2000 2500 3000
l/h
Fig. 49
1500 2000 2500 3000
l/h
Fig. 50
Indoor unit head loss
KPa
90
80
70
60
50
40
30
20
10
0
0 500 1000
Useful head 2 zones
KPa
90
80
70
60
50
40
30
20
10
0
0 500 1000
1
Zone 1
2 Zone 2
It is possible to install a supplementary circulator pump if the
one supplied is not powerful enough. For the electrical con-
nections, refer to the paragraph "Electrical connections".
a
If thermostatic or zones valves are installed on
all terminals, mount a by-pass to guarantee the
minimum operating flow rate. Consult the table
in the paragraph "Rated and minimum flow rate".
Hydraulic connections
1500 2000 2500 3000
l/h
Fig. 51
2
1
1500 2000 2500 3000
l/h
Fig. 52
27 / EN