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Hi, I'm a Gas Safe registered engineer and have entered my details into "the combustion chamber" and am waiting approval. In the mean time, I need an urgent response before 12 noon tomorrow (Monday). Just need opinions of people with more experience on this matter. I have a customer with a...

Hi, im wiring the Salus RT500RF programmable thermostat to a sabre HE25 boiler, which doesn't have a wiring loop/jumper (the one you usually remove for the thermostat). The salus stat has 5points; 1. NC - Normally closed, so ignore this one (In the diagram for 230V application, this is...