what should it be set at
TWO DEGREES
68-70f is adequate for most people.
As low as you can live with
i dont know =D
My thermostat is broken.
Set thermostat to desired temperature; lets say, 70 degrees Fahrenheit, a few seconds will go by then the furnace should activate. Once the furnace heats the room to the set temperature the furnace should shut off.
As with any thermostat it is based on where the set point is on the temperature scale. On hot water tanks the thermostat opens the element circuit when the set point temperature is reached. For example the set point should be around 135 degrees F. When cold water enters the tank, the thermostat closes due to sensing a temperature lower than the set point is set at. When the water heats up to 135 degrees the thermostat open because the set point is reached.To test the thermostat shut the power off at the distribution panel for the hot water tank. To do this test the water in the tank should be up to temperature. Remove the wires from the thermostat that is to be tested. Make a diagram of how the wires were connected. Using a continuity tester (ohm meter works fine) place the leads across the terminals where the wires were connected. If there is no reading then the set point is satisfied and the circuit is open. Leaving the tester leads on the terminals, with a screw driver raise the set point to a higher value. The meter should now show continuity between the terminals. Turn the set point down and the terminal reading should open. If this is happening then that thermostat is operating fine. Reposition the thermostat to the original set point. If you are working on the top thermostat now do the same to the bottom thermostat to see if it is working also.See related link below.
Only if the outside unit is a heat pump.
41.5 C or 299 Calories 2222 F
Yes, with out the thermostat, the coolant can circulate to fast to effectively absorb and transfer any heat. Updated answer, The thermostat is to keep the engine running at a factory set predetermined temperature, without the thermostat the engine should run cooler.
There could be an issue with the thermostat sensor, such as it being dirty or damaged. It's also possible that the thermostat is improperly calibrated. Try cleaning the sensor and checking the calibration, or consult a professional for further troubleshooting.