24
clean heat technology
Note
The expansion vessel is factory set at 1.0
Bar.
INST
INST
INST
INST
INSTALLA
ALLA
ALLA
ALLA
ALLATION 5
TION 5
TION 5
TION 5
TION 5
5. Open the filling loop isolating valve part-way so that the system fills slowly.
6. When full and vented make a note of the cold fill pressure on the Boiler pressure
gauge.
7. Open drain cocks and vent to fully flush the system.
8. If required, set the expansion vessel pressure to 0.5 Bar below the cold fill pressure
recorded in 6 above.
9. Check all drain cocks are closed.
10. Refill and vent the system to the correct cold fill pressure see 5-5.7.
The correct amount of suitable corrosion inhibitor should be added to the system
strictly to the manufacturer’s instructions.
11. Shut filling loop isolating valve and disconnect one hose union.
12. Check for leaks.
Note
Older systems need careful checking and
pressure testing as they will be operating at
a higher pressure.
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