heating a drum of resin

In general it should be set to25 to 30 degrees C, depending on desired energy output (if it is really cold outside, you need slightly warmer water)

 

I use open circulation system, so it is geothermal water at 32°C/90°F during the coldest month of january at average of
0°C/32°F outside temperature to keep 18-20°c in the shop. In the summer the system temp is 18°C/64°F.

 

Well there you go.

That's pretty hot.

We use around 23 - 25C.

It's referred to here as "warm" water heating.

Beautiful way to heat though.

Cheers!