Boilers Part 13 – The Heating Cycle With Outdoor Reset

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Today I will illustrate the heating cycle with outdoor reset.

Your thermostat is set for 70 deg. F. The temperature drops to 69 degrees and the boiler fires up. Based on the outside temperature of 50 degrees, your boiler reset controller determines that a water temperature of 100 degrees will provide the right amount of heat. The boiler starts heating your water until it reaches 100 degrees. Your home heats up to 70 degrees and the boiler shuts off, but the temperature doesn’t go up higher because your radiators are only 100 degrees. In order to maintain 70 degrees in your home, tha radiators must stay at 100 degrees so they will never cool down. Rather, they will stay at 100 degrees and maintain your exact set point of 70 degrees in your home. How efficient, How comfortable? As it gets colder outside, your boiler will automatically adjust the water in your system hotter and hotter to meet your exact heating needs. Imagine how comfortable it will feel in your home without temperature fluctuations? Imagine how quiet your system will be without the constant noise of your pipes expanding and contracting as they heat up and cool down. But most of all, imagine how much energy you will save due to this operating efficiency.

See this video to learn more about outdoor reset.

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