Ariston NIMBUS PLUS M NET Manual page 62

AVAILABLE PRESSURE AT INTERNAL UNIT
Available pressure at internal unit outlet towards the system.
Coupled with external units:
40M EXT - 50M EXT - 70 M EXT - 70MT EXT
AVAILABLE PRESSURE AT INTERNAL UNIT
Available pressure at internal unit outlet towards the system.
Internal unit heating/cooling
Coupled with external units: 40M - 50M - 70M - 70MT -
90M - 90MT - 110M - 110 MT EXT
System Size Flowmeter OFF Threshold [l/h]
40 M
50 M
70 M - 70 M-T
90 M - 90 M-T
110 M - 110 M-T
Available pressure
The curves indicated above show the available pressure of internal units.
In order to have a correct sizing of the system, the pressure drop curve of the entire circuit (in function of the nominal flow
rate) must stay below the available pressure curve everywhere. Pressure drop values depend on the specific installation.
You can install a supplementary circulation pump if the module's own unit is not powerful enough. For the electrical hoo-
kup, refer to «Electrical circuit».
Warning: in case of installation of thermostatic valves on all terminals or zone valves, install a bypass to ensure the mini-
mum operating flow rate.
COMPRESSOR FREQUENCY TABLE
Heat Pump
4 kW
5 kW
7 kW
9 kW
11 kW
62 / GB
1 Z
2 Z
Flowmeter ON Threshold [l/h]
348
348
486
630
768
Frequency min [Hz]
18
18
18
18
18
Coupled with external units:
90M - 90MT - 1110M - 10MT EXT
Internal unit heating only
Coupled with external units: 40M - 50M - 70M - 70MT -
90M - 90MT - 110M - 110 MT EXT
390
390
540
702
852
Frequency max (heat) [Hz]
80
100
90
75
90
2 Z 1 Z
Nominal flow rate [l/h]
640
800
1120
1440
1755
Frequency max (cool) [Hz]
65
80
70
57
70