6 720 660 245 (2015/06 BL-FR)
13
Heating water filling
Attention: The boiler can be damaged.
ÿ Before filling, fill the pipe with water.
This prevents any penetration of air into the installation.
ÿ Close the taps and remove the filler pipe.
ÿ Open the fill/drain valve.
ÿ Mount the hose on the filling and draining tap and connect
it to a water tap.
ÿ Fill only when the boiler is cold.
ÿ Slowly open the cold water tap and fill
ÿ The maximum pressure of 3 bar at the highest heating
water temperature must not be exceeded (the safety valve
opens).
The filling is different for each heating installation. Have your
installer show and explain the filling.
l’installation.
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