Baxi Solo 2PF - setting output temperature

Get a pipe thermometer on the flow pipe.

Make sure it has good thermal contact with the pipe, most are rather poor and read low.

Another way is to wrap the 'flow' pipe in tape and use an IR thermometer. The raw pipe will be reflective in the IR band, and so best covered it with tape to provide an emissive surface.

Get yourself an electronic thermometer. Thermocouple types are readily available for not much money on ebay.

Just be aware that all the advice about reducing flow temperature could be damaging to a non-condensing boiler if it has a cast iron heat exchanger. You *don’t* want water condensing inside a boiler that isn’t corrosion resistant or have any way of dealing with condensate.

Must admit to being a bit surprised that you could get a non-condensing boiler as recently as 10 years ago…

Tim

If it is a non condenser then there is not march benefit in turning it down other than for less pipe clanking and ticking in the warmer months of the heating system. Make sure the return temp is 60 or higher to precent condensation in the boiler.

One of these, with the sensor clopped to the flow pipe, with some insulation over the top, will be very accurate. They read in degrees C.

Would this not to some extent depend on the loading and losses in the rads? Brian

I'm not sure if I follow, certainly the exit/flow temperature will take time to increase but most boilers modulate on the exit temperature. Once it's in modulating mode the OP will be able to associate a setting number with actual temperature.