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should i do this the boiler on this morning without the programmer like the Honeywell app
- Use a relay - Wire in a strict 230V relay (Such as http://uk.rs-online.com/web/p/products/4334076/) between the boiler switched live and pin 8 on the wiring centre
- Use the official "RC" device - The RC device (Worcester part 87161092750) pulls the voltage down below the tolerance of the boiler's relay. Only when a full 230V is present will the boiler fire. The RC device is wired between Neutral and the L/R (switched live) terminal. There's no polarity, so use either wire for each. In a wiring centre, it would be installed into terminals 2 + 8