Where & How do I Set Hot Water Boiler, Steam Boiler, or Furnace Temperature?
Remember that the building THERMOSTATS set the desired temperature in the occupied spaces in building, not the actual temperature in the heating boiler or furnace itself. In most heating systems, turning up the thermostat simply causes the boiler or furnace to turn on. The temperature at the boiler or furnace is controlled by local safety devices mounted right at that equipment, such as the heating boiler Aquastat shown at left. Hot water heating boiler normal pressure ranges as read on the pressure gauge, are described in this article, below. The means by which a hot water heating boiler’s pressure is set or controlled are described in this article below at Where do I Set the Heating Boiler Operating Pressure? For details how, to what number, and on what controls the hydronic heating boiler temperatures are set, also see Aquastat Functions, and Limit Switches, Boilers.
