3. Close the stop valve (4) in the cold water supply.
4. Open the drain valve (9).
5. Aerate the entire installation of air until the water heater is completely drained.
6. If the water heater needs to be drained completely, disconnect and tilt the water
heater in the direction of the dr
ain valve.
0313851_DRE_NLUKFR, 30-03-2022 43
EN
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