- Posted on
Sat Nov 05, 2016 5:22 pm
-
ELWOOD
offline
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- Posts: 225
- Joined: Feb 11, 2007
- Location: Ramsey, NJ
This can get somewhat confusing depending on the type of heating system you have. Heating Equipment State comes from the thermostat and says the room is cold and tells your
furnace to start producing heat, when the room temperature is satisfied the Heating Equipment State changes to off and the thermostat tells the furnace to stop heating. What happens
in the furnace depends on the type. With a hot water system when the thermostat says give me heat it opens a zone valve, the zone valve opening turns on the circulator pump and the
radiator starts getting worm. Now the water in the furnace starts dropping in temperature so an other thermostat in the furnace now turns on the burner and heats up the water. When
the furnace get the water hotter the burner stops but the zone valve may still be open if the room is not up to temperature. So the burner may be turning on and off until the room reaches
the set temperature. The heat pump is similar in that the compressor can be turning on and off when heating, to complicate things more heat pumps also have a backup electric heating
element for when it gets colder out doors and the compressor does not produce the required heat. If you listen for the fan you will see that it turns on when the thermostat calls for heat
and stops when the room reaches the set point.
Hope I haven't made this to confusing.
Elwood