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This video is for GAS SAFE ENGINEERS only, always follow manufacturer instructions.
Before to start any work on gas appliance isolate the power, turn off the gas and the waters.
1. Remove front cover
2. Download manual
idealheating.com/uploads/docu...
3. Drain the boiler
4. Remove the circulating pump screws.
5. Replace circulating pump head.
6. Refit screws.
7. Reconnect filling loop.
8. Re-pressurise the heating system till 1 - 1.5 bar.