Nimbus Compact M NET R32 Installation Manual UK
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Hydraulic connections<br />
4.1.5 Available pressure<br />
Hydraulic circuit<br />
Make sure that the available pressure is not lower than the<br />
head loss of the entire hydraulic system.<br />
The curves in the pictures below shown the available pressure<br />
on the flow from the outdoor unit.<br />
NIMBUS M EXT <strong>R32</strong><br />
kPa<br />
90<br />
80<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
1<br />
0<br />
0 500 1000 1500 2000 2500 3000 3500<br />
Fig. l/h43<br />
1 35 M - 50 M<br />
2 80 M - 80 M-T<br />
3 120 M - 120 M-T - 150 M - 150 M-T<br />
It is possible to install a supplementary circulator pump if the<br />
one supplied is not powerful enough. For the electrical connections,<br />
refer to the paragraph "Electrical connections".<br />
a<br />
If thermostatic or zones valves are installed on<br />
all terminals, mount a by-pass to guarantee the<br />
minimum operating flow rate. Consult the table<br />
in the paragraph “Rated and minimum flow rate”.<br />
2<br />
3<br />
Indoor unit head loss<br />
kPa<br />
45<br />
40<br />
35<br />
30<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
0 500 1000 1500 2000 2500 3000<br />
l/h<br />
Useful head 1 zone<br />
Fig. 44<br />
kPa<br />
90<br />
80<br />
70<br />
60<br />
1<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
0 500 1000 1500 2000 2500 3000 3500<br />
l/h<br />
1 Zone 1<br />
Fig. 45<br />
It is possible to install a supplementary circulator pump if the<br />
one supplied is not powerful enough. For the electrical connections,<br />
refer to the paragraph "Electrical connections".<br />
a<br />
If thermostatic or zones valves are installed on<br />
all terminals, mount a by-pass to guarantee the<br />
minimum operating flow rate. Consult the table<br />
in the paragraph “Rated and minimum flow rate”.<br />
DHW circuit<br />
The head loss of the primary heater was tested in accordance<br />
with the BS EN 12897:2016 standard and is equal to 3 kPa.<br />
EN / 27