I have my thermostat set to close draft at 180 degrees. Just wondering how hot you fellows run your water temperature?
I'm thinking upper 170's somewhere and starts at around mid 160's. No need for me to run it hotter ........ yet!
I didn't do any work with indoor boiler systems other than being "told do this; do that" But I remember the temps being set much lower for both infloor and radiant (baseboard units). There was a mix of both copper and pex on those systems. brenndatomu ............ Any input? roughly 150°C The practical upper temperature limit for copper/water heat pipes is roughly 150°C, and is set by the maximum allowable stresses in the copper envelope; see Figure 6. What temperature can copper pipe withstand? Table 3a and Table 3b of the Copper Tube Handbook shows that the ASME Boiler and Pressure Vessel Code limits the use of copper tube and fittings to a maximum service temperatures of 400°F or less.
125 to 130 °F Where PEX tubing is used for radiant-heat under-floor tubing, 125 to 130 °F is typical operating temperature used for water entering the tubing. 180° Typical hot water baseboard radiation systems use standard supply water temperatures of 180° which is circulated through the copper and aluminum fin tube piping arrangement to heat the desired space and returns back to the boiler at approximately 160° (20° Delta T).
Seems like I remember reading somewhere that a good low temperature for baseboard was 160. Can’t remember where. LOL That CRS sneaking again.
I think 180* tends to be a pretty common number that I hear on OWB's...I know my brother tends to turn his up a bit in real cold weather...then lower in warmer weather...I think he runs 185 when its real cold? Gasifier , 190* is where the boiler at work kicks off too...so not that unusual. But that is for a large industrial heat exchanger and cast iron radiators thought too...
I have baseboard through entire house and radiant in garage. But radiant in garage was installed by a HVAC guy who put a mixing valve on it for lower temperatures through that PEX floor pipeline.
