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- 21
-
INST
ALLA
TION
FILLING AND EMPTYING THE SYSTEM
FILLING
- Check that any system drain cocks (1) are closed.
- Open the on-off devices (2) in the water circuit and slowly
fill until activating the valve/float (3) installed on the open
expansion vessel.
WARNING
•
To assist the removal of air from the system, open the
vent valves, if featured, with the due precautions.
•
The on-off devices (2) in the water circuit must remain
open to allow the circuit to be topped up.
•
To avoid the risk of frost when the system is not used for
an extended period, add suitable antifreeze fluid to the
water.
EMPTYING
- Check that the on-off devices (2) in the water circuit are
closed.
- Connect the drain cock (1) and open it.
IAF
CENTRAL HEATING
FLOW OUTLET
CENTRAL HEATING
RETURN INLET
1
2
2
3
1
Содержание ENERGY 21
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