You may have a system that runs the pump(s) until the water temperature has dropped to some value in order to retrieve all the heat from the water before shutdown. That would mean, then, most likely the thermostat that controls this operation is probably defective. Although answer one is not wrong, there is another possibility. Usually a thermostats contacts are not "strong." or heavy enough to carry enough electric current to run the pump. So, a relay is placed in the circuit between the thermostat and the pump. Sometimes the relay can become defective and "freeze" in either the always ON position, or permanently OFF. Therefore, in addition to checking the operation of the thermostat[s], check for, and proper operation of, any relay in the pump circuit.j3h.
It is a device to control the temperature of electrically heating devices.
It can be in either location, depending on your head pressure ie a circ on the head or "pump away" will circulate water better in upper floors. If the system is in a 2 or 3 story house using standard baseboard, then having the circulator in either position wont matter. Most all manufacturers are shipping and or directing installers to pump away...circulator on the supply....
Some examples are: freezers, heating systems, air conditioners, irons.
White Rodgers make programmable thermostats for the home. They are available at Sears, as well as many independent Heating and Air Conditioning dealers.
it is the pump that moves the water round the system if you do not have it the hot water would not move around and it would not work simple as that
The old mercury style thermostats provide a wide range from "on-off" and can provide major energy savings for hot water/steam radiator heating. These heat systems have wide swings of heating and the newer electronic thermostats cannot be adjusted for the wide swings. The largest manufactuer of thermostats in the US, Honeywell, acknowledges this but even Honeywell determined that not enough homes use the older heating systems to be practical to make an electronic unit for their application.
You need to be a bit more specific in your question. You state you have 1 AC system but 2 thermostats. What type of heating system do you have? Gas furnace, Boiler, Electric heat, Hot Water? Is your heating unit separate from your cooling unit?
degassing
Thermostats are used to keep a constant. They maintain the 'ideal' conditions For example: - if you set your heating to come on at 20deg the thermostat will turn the heating on if the temp falls below your ideal 20 degree temperature. Once it has reached the ideal it will turn the heating off again.
secure heating, ventilation, and ac system, circulating fans, and air handlers
Absolutely. Use a small 'torpedo' level, place on the top of the thermostat to insure accuracy.
An integrated system for both space and water heating. Heating is accomplished in a condensing heating module having a small hot water storage reservoir to reduce burner cycling during periods of low demand. The space heating system includes a fluid flow loop with a fluid circulating pump for circulating a heat transfer fluid in the loop from the heating module to a remote space heating heat exchanger. The heating module can also supply hot water for service use. The system may be configured either as an open loop system, in which the space heating and water heating subsystem are combined and share common lines, or a closed loop system, in which the space heating subsystem fluid flow loop is isolated from the water heating subsystem.