How do you plumb a water line to a coal furnace to preheat the water prior to going into a electric hot water heater?
Is the furnace a hydroponic system? If it is you only need to get a heat exchanger (As you don't want the water to your heater flowing through the furnace) and plumb it as another zone in your house. If not you need to find a device for heating water that fits your furnace. and plumb the heat exchanger to that. I believe an heat exchanger is required by code in either case.
The heat exchanger in a furnace is the primary component in a furnace. That said, their are circuit boards, motors and other components that can also fail regardless of the age of the heat exchanger. In my opinion, if you can afford to replace the furnace, you would be much better off. The cost of the heat exchanger with labor is probably not too much less than replacing the entire furnace.
If you have baseboard heat and your boiler runs off the furnace can it turn off the furnace without hurting anything to save on oil you realize you will not have hot water?
when running the heat-pump the air blowing from the heat ducts is not hot ( it's to cold for the heat-pump). you have a main furnace and it won't turn on ( is thermostat selected for this source), ( is the power switch for main furnace on ), ( is fuse for this furnace good). If these are good (check thermostat wiring at thermostat, and transformer).
A furnace by definition provides heat. There must be something that controls that heat; that is that tells the furnace when to fire up the burners and when to shut down the burners. This function is provided by the furnace control system. Usually the control system itself is controlled by a thermostat which maintains the temperature at a preset level on the thermostat.
The heat pretty much stays in your house. The heat from the furnace rises (because the molecules have moved apart) and goes to the top of the house. There it cools down, and because it is not more dense, it sinks back down to the furnace where it can be made warm again. All this happens through a process of heat transfer call convection.
I have an International Comfort Products Furnace Model NFCP2400D1 and want to wire it to a heat only thermostat. Can anyone tell me how to do that?
All three. A furnace burns something, this creates heat which can dissipate in those 3 ways. All 3 occur: Radiation: the fire radiates heat which can be seen with infrared goggles. Convection: The fire heats up air which rizes and leaves the system. Conduction: The fire heats up the materials of the furnace, causing the heat energy to heat up the air on the outside of the furnace, which in turn convect.
An ordinary furnace is not an engine at all, because it does not directly cause mechanical motion. The heat or expanding gases released in a furnace can be used to drive an engine, but that is a separate component from the furnace. If a furnace is used in this manner, the engine is an external combustion engine.
Yes. Specially if you have a 90%plus condensing furnace. This furnace has two heat exchangers, which means that it uses the combustion chambers radiant heat as comfort heat, if the furnace is matched with a 2 stage or modulating gas valve, the savings can be between 40 to 60 percent savings on utility cost.