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Furnaces
The furnace, whose name is derived from the Latin word fornax, which means oven, is a heating device utilized for both home and industrial purposes. Questions about furnaces can be asked and answered here.
1,402 Questions
How do you adjust a flame on furnace?
Well it depends on what type of furnace you have so cant really help you on this one know it's cold on your home xD lol sorry :/
Why does furnace and heat pump run constantly?
Could be a few things, the house being cold, a broken temp sensor, disconnect between the sensor and the furnace/pump.
What did the colonists use to clean the chimney?
They didn't clean it and because of that it often caught fire. Many houses burned down as a result. In Jefferson's slave quarters the historians found nails that were in a pattern and for a long time they couldn't figure out why. Finally, it was discovered that the nails came from chimneys of the slave quarters. The chimneys were made so when they caught fire they could be pulled down saving the house. This left the pattern of nails on the ground. Many houses were also built to have separate kitchens for the same reason. Kitchens often caught fire because of the cooking so they built them apart from the main house. You can see an example of this at Mt. Vernon.
How do you put heating oil in your oil tank?
Contact a local residential heating oil supplier in your area. Websites for heating oil distributors should offer you a price quote on the current cost of home heating oil. A residential heating oil supplier will deliver directly to your home and usually offer emergency heating oil delivery if your tank is completely empty.
Why does my Furnace run continuously after flame is out?
It should not run continuously. Typically, the fan (sometimes called a blower) will continue to run for a minute or so after the flame is out. This does not consume much energy; it does flush the residual heated air from the ducts.
Make sure the fan is set to "AUTO" on the thermostat, to ensure proper cycling.
Can you convert a low eficciency gas furnace to a high efficency gas furnace?
While it's not 100% accurate to say that you can convert a low-efficiency furnace to a high-efficiency furnace, there are things you can do to improve the accuracy of your existing furnace. You can approach this in two ways: retrofitting your old furnace with new equipment or taking steps at home to improve your efficiency.
Retrofitting Your FurnaceRetrofitting your furnace involves adding new components to your old system. When you are considering retrofitting your existing furnace with new equipment, it's important to consider whether or not the cost of the retrofit will be worth it. This will depend on when you think you're going to replace the furnace (after all, all the retrofits in the world won't extend your furnace life forever). The most common types of retrofits are:- Vent dampers - a vent damper prevents the loss of heat from the chimney by closing off the vent when the furnace isn't firing. Installing vent dampers is more common with steam boilers than furnaces.
- Intermittent ignition devices - many older furnaces have a pilot light that is on constantly. An intermittent ignition device will light the pilot only when necessary, saving you a little in fuel costs.
- Derating gas burners - while not always allowed by building codes, it is possible to reduce the heating capacity of an oversized furnace system to make it more efficient. This should only be performed by a qualified HVAC technician, as it can be quite complicated.
- Change the filters - this is the easiest way to improve your furnace efficiency. Filters should be replaced monthly to ensure the most efficiency.
- Lower the blinds at night - drapes and curtains can serve as insulation to keep heat from escaping through the windows. During the day, open the blinds to let heat from the sun shine through.
- Insulate your ducts - since warm air flows through the ducts into your home, it is important to make sure that heat stays in the ducts instead of seeping through the bowels of your home. This is especially important in places like the garage, which are typically unheated and can seriously compromise the efficiency of your ducts.
How much electricity does an oil furnace use?
As the heat is coming from the burning oil, the furnace itself technically uses none.
Assuming you have a central heating system that forces hot air through ducts to vents throughout the house (as opposed to old-fashioned steam radiators) it only requires a few watts to run the blower fan. Radiators typically use no electricity.
The oil burner needs electricity for the combustion fan motor to operate and this fan motor is coupled to the oil pump which feeds the fuel to the electric ignitors that light it. You mention this is a furnace so there is also the indoor fan motor that blows the hot air into the living space. If this were a hot water boiler there would be an electrically power water pump instead of the indoor fan the furnace has.
Where is the furnace high limit located?
Where the high limit is located. It varies from model, and the manufacturer, you may find it on the front panel and will be located above the burners. This can easily be traced back by following the wiring diagram, or the schematic.
Why is there smoke coming out of 1 of the chimneys?
Smoke coming from a chimney usually indicates that there is a fire burning inside, such as in a fireplace or heating stove. If there is excessive smoke or the smoke is a different color than usual, it could indicate a problem with the fire or chimney, like poor ventilation or a blockage. It's important to investigate and address the issue promptly to prevent potential hazards.
How electrode regulation in arc furnace occurs?
Electronic Controller
The electronic controller is the "heart" of the electrode regulation system. It acquires the physical signals, compares them with the setpoints by computing an error function and then generates the output references for the regulating valves.
Electrode Basic Movement Rules
Being in relation with electrode currents and voltages only, the electrode regulation system follows some basic rules to regulate the movement of the arc furnace electrodes. These rules include:
- U" = 0, I" = 0: The furnace breaker is open, and the electrode is kept in its position.
- U" > 0, I" = 0: The furnace breaker is closed without arc, and the electrode is lowered at maximum speed.
- U" > 0, I" > 0: The furnace breaker is closed with arc, and the regulator is in regulation mode.
- U" = 0, I" > 0: This is the short-circuit condition, and the electrode is forced to rise at the maximum speed to reach one of the previous situations.
Control Action
Enlarge this pictureFig. 2. Generic electrode circuit
There are different possible approaches to implement the regulation control algorithm. The most used and reliable method is a classic approach using PID controllers, which is represented by the following formula:
Out(t)=Kp•e(t)+Ki•òe(t)+Kd de(t)/dt
When analyzing the regulation process, experience shows that the use of the proportional component only provides simple control of electrode position during "flat bath" operation (i.e. refining/heating phases or continuous charge). The addition of the integrative component in the control algorithm gives more opportunities to adjust the system, adding custom parameters to face all the possible situations occurring during the melting process. The derivative component is normally omitted because it introduces arc instability, increasing the complexity of the controller without providing any measureable benefit to the melting or heating process.
The simplified control algorithm commonly used is:
Out(t)=Kp•e(t)+Ki•òe(t)
e(t) is the error function computed as the difference between process and measured values of a controlled variable, which is plant-specific. Mechanical characteristics, electric line design and signal acquisition quality affect the variable selection. A common and widely applied approach is the selection of the impedance as the controlled variable. This control mode is known as control at constant impedance, which means the controller acts to minimize the error function defined as e(t)=Z"-Z"ref, where Z''=U"∕√3 I" is the measured impedance and Z''ref=U"ref∕√3 I"ref is the reference impedance. The output function, out(t), is the control function that has to be applied to the regulating valves.
Could fuse be out to cause furnace not to go on?
Yes, a blown fuse can cause your furnace to not turn on. Check the breaker box and see if any of them have tripped.
Why use barometric damper on wood furnace?
A Barometric Damper when used properly will help regulate the draft. This in return will allow for better combustion, longer burns and less fuel to be used. One problem with a Barometric Damper is the chimney will run a little cooler due to the introduction of room air. If the unit isn't being burned correctly, this can cause creosote to accumulate in the chimney. The Barometric Damper and flue must be checked periodically and cleaned when necessary.
Why does furnace hum while off?
it's the transformer. that you here. humming. if too noisy you can replace it. and that should solve your problem. its just some are not built right and they tend to hum.
Furnace filters control the amount of particles that pass out of the furnace and into the house. They are essentially the first line of defence in keeping the air in your home clean.
What is main purpose of refractories of boiler furnace?
one of the main purpose of refractories in the boiler furnace is to
How do you repair improper polarity on a gas furnace?
Well it could be the hot and neutral wire needs to be swapped at the furnace. And if its an older unit that this has just occur on the control board could be faulty.
Is an old furnace worth fixing?
In most cases the answer would have to be no.
Reasons why old furnaces are not worth fixing:
1.It's not nearly as efficient as a new furnace
2.The cost of fixing it
3. Something else will probably go bad in the near future.
4.sometimes it is no longer safe to keep it running
Why is the furnace of a fire tube boiler corrugated?
So that it can withstand the external pressure of the water pushing inwards to crush the furnace.
