Heatmaster 120 TC, Installation, Operation And Maintenance Instructions, Page: 50 / 68

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-off 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 fi lling valve ( 2 ).
4. Open the air bleed valve (
4
).
5. Once the system is bled from air,
bring the pressure to the static
pr 0.5 bar: 1.5 bar = 10m - 2
bar = 15m
Cold water
Hot water
1
1
1
2
1
1
2
3
4
en
50
HeatMaster TC :
664Y6800 • A
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STARTING UP