Confused about the best water temperature for Radiators

cancunia

I have a wood pellet stove that heats water for my radiators and I'm wondering what the best water output temperature is. I've read a few items on the subject and the opinions seem to range from about 65 - 70 Deg C. My system is a mix of new and fairly old steel radiators, what I read from looking at EN 442 is that the water should be somewhere around 70-75. Any thoughts or experiences of temperatures when using pellets would be much appreciated.

Thanks

thozza

Ours runs at 75deg which is the default on the pellet boiler, and also the temperature the installer recommended.

cancunia

Many thanks Thozza. I was advised to set it at 65deg but never really believed that advice, I tried 68deg but the room never got up to temperature and the boiler ran for hours consuming more pellets than usual. I'll put it back up into the low 70's and experiment there a bit.