Ariston NIMBUS COMPACT M NET Manual page 62

INTERNAL UNIT
Preinstallation
The indoor unit FS should be positioned at a compartment as
homes ( to avoid risk of freezing) in order to ensure the best
performance.
Minimum clearance
In order to allow the proper maintenance of the appliance, you
must observe the minimum clearances for installation as shown
in the figures below.
150 150
* x = 0 mm with hydraulic connection kit right / left
* x = 80 mm with hydraulic connection kit on top
1. Removing the front panel
To access the interior of the unit, undo the two bolts (A) on the
front
panel, and pull the panel out and up.
A
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 heating systems (8 l). Make sure that the expansion vessel has a capacity appro-
priate 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 pressure and check that all gaskets are tight.
62 / GB
x*
800
A
2. Safety valve drain
1 ZONE / 1 ZONE L
Discharge
valve
2 ZONES
Discharge
valve
Assemble the drain pipe of the safety valve, included in the
package documents.
Safety valve 3 bar
Safety valve 3 bar