You really only need a maximum of 120 f for your floor.
In floor heating boiler temperature.
When floors are conditioned within this range most people wearing normal footwear will enjoy having their feet on the floor.
The maximum flow rate of 8 4 gpm at 45 f temperature rise 5 4 gpm at 70 f rise the secondary heat exchanger is made of 316l stainless steel this gives you improved corrosion resistance and the system complies with ultra low nox regulations of less than 14 ng j 20ppm.
Most modern boilers will have a mark on the screen that shows you the point at which condensing mode will be turned on.
Water heaters are good for radiant floor heating because they maintain a low temperature.
That temperature is safe and comfortable as well as being efficient.
Turning down the temperature on your boiler can help increase its efficiency.
The higher this is set the more energy will be used and the hotter your radiators will become.
Radiant floor heating and hardwood floors humans appreciate floors temperatures that are controlled to above 66 f 19 c in cooling and below 84 f 29 c in heating.
Typical operating temperature range for radiant floor heating systems at 85 140 f 30 60c though we agree that 140 deg f.
As long as you have room thermostats you can set the boiler thermostat reasonably high to make sure that enough heat is generated.
The us doe notes that.