26 18.01. 6755441_03
ANL-ANLH 020-202
EN
4.5. SYSTEM CHARGING
4.6. SYSTEM DRAINING
Before commencing the charging procedure position
the main isolator of the unit in the OFF position.
1. Ensure that the system drain valve is closed
2. Open all the system air vents and of the terminal
units
3. Open the system isolating valves
4. Start filling slowly opening the system water
charging valve external to the unit
5. When water exits the terminal units air vents
close them and continue charging until the
required system operating pressure is reached.
1. Before commencing draining the draining proce-
dure position the main isolator of the unit in the
OFF position
2. Ensure the system water charging valve is closed
3. Open the system drain valve external to the unit
and all the system air vents and of the terminal
units.
WARNING
Confirm the hydraulic integrity of the
joints.
WARNING
It is recommended to repeat this pro-
cedure after the unit has operated for
a few hours and to periodically check
the system pressure. Charging to be
done with unit off (pump OFF).
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