Mar 12, 2014 · The average setting for a gas-powered hot water boiler is 180°F. This provides the appropriate level needed for most cold weather temperatures. If you can raise the temperature manually, do not set it any higher than 210°F (which is often the limit), and try to remain down at 190°F …
The Temperature in Your Boiler and the Dangers of
Jan 06, 2014 · The surface readings will be about 30-50% cooler than the actual flue gas temps. That is why the range scales on a stove pipe thermometer start saying "Overfire" or "Too hot" starting around 500F. Try to keep the surface flue temps between 250 and 400 during the peak of the burn cycle.
Jan 22, 2019 · This is the temperature at which water droplets form. For natural gas boilers, the dew point is around 55C. In other words, the water in the return pipe needs to be 55C or lower or your boiler …
Exhaust Temperature (o F) (o C) Chemical Oxidation: 1350 - 1475: 730 - 800: Annealing furnace: 1100 - 1200: 590 - 650: Fluidized-bed combustion: 1600 - 1800: 870 - 980: Natural-gas fired heating appliance with draft hood: 360: 182: Liquefied-petroleum gas-fired heating appliance with draft hood: 360: 182: Gas-fired heating appliance, no draft hood: 460: 238: Glass melting furnace
Jan 18, 2012 · What is the flue gas temperature versus the exhaust pipe temperature (as I am measuring with an IR thermometer)? Expand Signature. Regards, most of the time i see 400F with my IR on the back of the boiler exhaust tube. If i lower the temp the smoke comes up but the wood use goes down so i don't know where i should be at this point. maple1
What is a safe flue temp? What is too hot? | Hearth.com
Apr 28, 2006 · supply temp is only 88% which would be in effect when it's closer to the outside design temp. So if it was warmer, let's say 40 degF then, might the boiler modulate down to maybe 140 deg, then with a Delta T of 20deg. on the returns, would that 120 degree return water be sufficiently 'cool' enough to activate the condensing feature and save on fuel usage by being around 93% efficient or higher?
For maximum efficiency, your flue pipe temperature should be in the range of 175 to 280 degrees Celsius or 350 to 540 degrees Fahrenheit, according to Natural Resources Canada.