Operation Manual

FILLING THE SYSTEM
First put the DHW tank under pressure before pressurizing the heating (primary)
circuit.
Filling the domestic hot water circuit
1. Open the isolating valves (1) and the
draw-o tap (2).
2. Once the water flow rate has stabilized
and the air is totally evacuated from
the system, close the draw-off tap (2).
3. Check all the connections for leaks.
Filling of the heating circuit
1. Open the isolating valves (1).
2. Make sure that the drain valve (3) is
tightly closed.
3. Open the  lling valve (2).
4. Open the air bleed valve (4).
5. Once the system is bled from air,
bring the pressure to the static
pressure + 0.5 bar: 1.5 bar = 10m - 2
bar = 15m
Cold water
Hot water
1
1
1
2
1
1
2
3
4
EN
27
EN
BNE : 664Y6000 •D
STARTING UP
Preliminary filling of the heating circuit
• Fill the primary circuit with mains water until you reach an approximate pressure of 1,5 bar in
the system.
• Bleed the whole system.