Now that my hot water issue has been solved, it has got me thinking whether my boiler thermostat is set correctly.
The plumber that installed it reckoned it should be set to near enough max (75 deg) on the basis that the boiler will run for less time to get the UFH up to temperature and will get a faster response. The UFH is set to 45 deg and the manifold pump is set to max flow (setting 3 on the pump).
Also, any thoughts on what a typical temp setting is on the UVC stat
Being oil fired makes no real difference, it still won't start condensing until the return temperature is below about 56 deg C. The IR thermometer will be fine for measuring the return temperature, with one proviso. It won't give an accurate reading from a copper pipe, but will if the pipe has a bit of paint on it. It's to do with infra red emissivity and the way these things are calibrated. They are set to read reasonably accurately from a matt light grey to white painted surface, with an e