Replacing flow limiter
1. Switch OFF the mains power.
2. Close the gas shut-off valve and
safeguard against reopening.
3. Drain the boiler from the secondary
side.
4. Pivot the control unit downwards.
5. Release the ties A and screwsB.
6. Remove the flow switch C connec-
tor.
7. Replace flow limiter D.
8. Refit the flow switch C connector.
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