Main components
Replacement of immersion heater
1 Set the switch (SF2) to
"stand by" mode and wait
approx. 30 secs
2 Cut the power supply to
VVM 310 and EB 101.
3 Close the shut-off valves to
the heating system and EB
101
4 Drain the water by open-
ing the drain valve (QM1)
and allow air in via the vent
(QM20) until VVM 310 is
empty.
5 Remove the plastic cover
above (AA1) using a screw-
driver.
33Chapter 7 | Component replacementNIBE™ VVM 310
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