Ariston NIMBUS PLUS M NET Manual page 67

WH M 2 ZONE
air purge
valve
safety valve 3 bar
WH M 1 ZONE HEATING
safety
valve 3
bar
air purge valve
WH M 2 ZONE HEATING
safety
valve 3
bar
air purge valve
Assemble the drain pipe of the safety valve, included in
the package documents.
3. Flling system
The maximum heating/cooling system pressure is 3 bar.
The maximum filling pressure is 1,2 bar.
As soon as the system is filled, disconnect it from the water
mains. Do not refill the system frequently (multiple times a
month) as this can result in corrosion.
Expansion vessel
The system is equipped with an expansion vessel for hea-
ting systems (8 l). Make sure that the expansion vessel has
a capacity appropriate to the quantity of water present in
the installation. Prior to filling, make sure that the filling
pressure is equal to 1 bar.
4. Preparing for startup of the heating/cooling system
Open the heating/cooling system delivery/return cocks.
Open the heating circuit filling cocks.
Close the cocks as soon as the pressure gauge indicates
the desired pressure. Bleed the system, restore the pres-
sure and check that all gaskets are tight.
NOTE: Condensate collection tank installation
In cooling mode, to avoid condensation leakage, it is recom-
mended to install the condensate drain pan below the module
(see figure) and to insulate the connecting pipes.
67 / GB