16
Connecting to the heating system
Filling the heating system
After fl ushing the heating system the hot water heater must be fi lled with
water. The heating system is then fi lled.
Fill the heating system with water, as follows:
1. Open the Shut-off valve with non-return valve so that the hot water
heating system fi lls.
2. Fill the heating system by opening the tap Filling heating water.
3. Vent the heating system by opening the Venting nipple which is located
close to the top of the hot water tank. Also open the heat pump Venting
nipple. Refi ll the system to the correct pressure. Normal pressure is
0.5 – 1.5 bar.
4. Close the tap Filling heating water when the correct pressure is
reached.
Safety valve
heating water
Venting nipple
Warning
The hot water heater must always be
fi lled and pressurised before the heat-
ing system is fi lled.
The installation must not, under any
circumstances, be switched on without
water.
290 A/W
Shut-off valve with
non-return valve
Filling heating water
Pressure gauge
Drain valve
290 A/W
Venting nipple
Optima
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