Global View; Availlable Pressure - Ariston NIMBUS 40 M EXT Technical Instructions

Global view

1
13
12
11
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.
WARNING:
the heating system must be fully deaerated by performing the deaeration cycle as described in the ignition procedure,
and by opening the air relief valves located on the
AVAILABLE PRESSURE
9
8
7
6
5
40-50
4
3
2
1
0
0 500
2 3 4
10 9 8 7
system.
90-110
70
1000 1500
[l/h]
5
1. Boiler delivery pipe
2. Domestic hot water pipe
3. Gas pipe
4. Domestic cold water pipe
5. Boiler return pipe
6. Hot water inlet from external unit G 1" M
7. Cold water tap
8. Gas tap
9. Hot water fitting
10. Heating system delivery tap G 1" M
11. Discharge tap
12. Delivery to heating system temperature
sensor
13. Collector
6
2000 2500
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