en
20
HR i
: A1002237 - 661Y1300 • B
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STARTING UP
FILLING THE PRIMARY CIRCUIT (Figure 2)
1.
Check that the drain valve (
3
) of your primary circuit is tightly closed.
2.
Open the stop valves (
1
) and (
2
) of the primary circuit connected to the heating boiler.
3.
Open the air bleed valve (
4
).
4.
In addition, follow the filling instructions provided with the heating boiler.
5.
Open the valves (
5
) to start filling, making sure not to exceed a pressure of 2 bar in the
primary circuit.
6.
When the air is eliminated, first close the air bleed valve (
4
), then the filling valves (
5
).
Figure 2
3
1
1
2
2
4
5
5
Cold water
Hot water
