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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

Where is the pilot light on laars mini therm 2?

The pilot light on a Laars Mini-Therm II is typically located near the burner assembly, accessible through a small inspection door at the bottom of the unit. To find it, you may need to remove the front panel or cover. Once located, the pilot light can be seen as a small flame next to the thermocouple. Always ensure proper safety measures are followed when inspecting or relighting the pilot light.

How much does a gas furnace and air conditioner cost for a 3000 square foot home?

The cost of a gas furnace and air conditioner for a 3,000 square foot home typically ranges from $7,000 to $15,000, depending on factors such as the brand, efficiency ratings, and installation complexity. High-efficiency models and advanced features can increase the price. Additionally, regional labor costs and any necessary ductwork or modifications can also affect the final cost. Always consult with a professional for an accurate estimate tailored to your specific needs.

Which central heatingsystem involves a furnace and a blower?

The central heating system that involves a furnace and a blower is known as a forced air heating system. In this system, the furnace heats air, which is then distributed throughout the building via ductwork and a blower. This method is efficient for heating large spaces quickly and can also be used for air conditioning when paired with a cooling system.

How many watts to run a typical oil fired furnace?

A typical oil-fired furnace consumes about 120 to 300 watts while running. However, the actual wattage can vary depending on the furnace's size and efficiency. It's important to note that the initial ignition process may require a higher wattage for a short period, often around 500 to 800 watts. Overall, the average operational consumption remains relatively low compared to electric heating systems.

What should the high and low temp be set at on a furnace?

The high temperature setting on a furnace is typically set between 180°F to 200°F, while the low temperature setting is usually around 140°F to 160°F. These settings help maintain a comfortable indoor environment while preventing excessive energy use. It's important to consult the furnace's manual or a professional for specific recommendations based on your system and climate. Adjustments may also be necessary based on personal comfort and energy efficiency goals.

How do you stop the blinking green light on a Trane oil furnace?

The blinking green light on a Trane oil furnace typically indicates that the system is in standby mode or has encountered an issue. To stop the blinking, first ensure that the furnace's power supply is on and that the thermostat is set correctly. If the light continues to blink, check for any error codes in the manual that might indicate a specific problem, such as a clogged filter or low oil supply. If necessary, reset the furnace according to the manufacturer's instructions or contact a professional technician for assistance.

How can you turn on the furnace?

To turn on the furnace, first ensure the thermostat is set to the desired temperature and is in heating mode. Locate the furnace power switch, typically found near the unit, and make sure it’s in the 'On' position. Next, check the gas valve (if applicable) to ensure it’s open, then ignite the pilot light if necessary. Finally, allow the furnace a few moments to start and monitor for proper operation.

Where is the return air on upflow furnace?

In an upflow furnace, the return air typically enters through the bottom or sides of the unit. It is drawn in from the living space through return air ducts, which then channel the air back into the furnace for heating. The heated air is then expelled from the top of the furnace into the ductwork, distributing warm air throughout the home. Proper placement of return air vents is essential for efficient airflow and heating comfort.

How many burners in a 70000 btu furnace?

The number of burners in a 70,000 BTU furnace can vary depending on the design and manufacturer. Typically, a mid-efficiency residential furnace may have between 2 to 5 burners to achieve that BTU output. High-efficiency models may use fewer burners due to more advanced technology and better heat exchange efficiency. It's best to consult the specific furnace's specifications for accurate information.

What is A good rule of thumb is that the exhaust flue for an oil furnace should?

A good rule of thumb is that the exhaust flue for an oil furnace should be at least 6 inches in diameter and made of a non-combustible material, such as stainless steel or galvanized steel, to ensure safe venting of combustion gases. The flue should also have a slope of at least 1/4 inch per foot to facilitate proper drainage of condensate. Additionally, it is important to maintain the flue to prevent blockages and ensure efficient operation. Always consult local building codes and manufacturer guidelines for specific requirements.

How much clearance does a furnace cold air return need?

A furnace cold air return typically needs at least 6 to 12 inches of clearance from any obstructions to ensure proper airflow. This space allows for adequate air circulation, which is essential for the efficient operation of the heating system. Additionally, local building codes may specify minimum clearance requirements, so it's important to check those regulations as well.

What size is lennox pulse furnace G140415-100-7?

The Lennox Pulse furnace model G140415-100-7 has a heating capacity of 140,000 BTU and is designed for residential use. It typically features a compact size that allows for installation in various spaces, but specific dimensions can vary based on the model and configuration. For precise measurements, it's best to consult the product manual or manufacturer's specifications.

What surround the furnace entirely?

The furnace is typically surrounded by insulation materials that help contain heat and improve energy efficiency. Additionally, it may be enclosed by a protective casing or housing to ensure safety and prevent accidental contact with hot surfaces. In some cases, a fireproof barrier or wall may also surround the furnace to enhance safety and comply with building codes.

Where is the filter located for a goodman furnace?

The filter for a Goodman furnace is typically located in or near the blower compartment. It can usually be found in a slot on the side or bottom of the furnace unit, or in the return air duct. Depending on the model, you may need to remove a panel or grille to access it. It's essential to check and replace the filter regularly to ensure optimal performance and air quality.

Is there a spacesaver forced air gas furnace?

Yes, there are space-saver forced air gas furnaces designed to be compact and efficient for smaller spaces. These furnaces utilize gas as a fuel source to heat air, which is then circulated throughout the home. They are ideal for homes with limited installation space while still providing effective heating. Be sure to check specific models and brands for size and efficiency ratings to find one that meets your needs.

Why are standing-pilot natural-draft furnaces no longer manufactured?

Standing-pilot natural-draft furnaces are no longer manufactured primarily due to advancements in technology and energy efficiency standards. These systems use a constantly burning pilot light, which is less energy-efficient compared to modern intermittent pilot or electronic ignition systems. Additionally, safety concerns related to pilot lights and the push for more environmentally friendly heating solutions have led manufacturers to phase out these older designs in favor of more efficient and safer options.

How do you calculate refractory wear index in electric arc furnace?

The refractory wear index in an electric arc furnace (EAF) is calculated by measuring the thickness loss of the refractory lining over a specific time period. This involves taking initial and final measurements of the refractory lining's thickness and calculating the difference. The wear index can also be expressed as a ratio of the volume of refractory material lost to the total volume of the refractory lining, often normalized by the duration of the operation. This index helps in assessing the performance and longevity of the refractory materials used in the EAF.

What are the pros and cons of using a blast furnace?

Blast furnaces are efficient for producing iron and steel, allowing for high-volume production and the use of various raw materials. They can also be integrated with other processes, enhancing overall productivity. However, they are energy-intensive and contribute significantly to carbon emissions, raising environmental concerns. Additionally, the initial capital investment and maintenance costs can be substantial.

What do old chimney sweep cloths look like?

Old chimney sweep cloths are typically dark, often black or soot-stained, due to their exposure to soot and debris from chimneys. They may be made of rough, durable fabric, such as cotton or linen, designed to withstand harsh cleaning tasks. Over time, these cloths can become worn and frayed, showing signs of heavy use. Some may also have a slightly faded or discolored appearance from repeated washing and exposure to the elements.

Furnace will not lite and blower keeps running blowing cold air?

If your furnace won't light and the blower is running continuously, it could be due to a few issues. Common causes include a faulty thermostat, a clogged air filter, or a malfunctioning ignition system. Check the thermostat settings and replace the air filter if it's dirty. If these steps don’t resolve the issue, it may be best to call a professional technician for further diagnosis and repair.

Is it harmful to turn the furnace on and off with the power swithch instead of the thermostat?

Yes, turning the furnace on and off with the power switch instead of using the thermostat can be harmful. This practice can lead to wear and tear on the furnace components, as they are not designed for frequent power cycling. Additionally, it may disrupt the furnace's cycling and efficiency, potentially leading to overheating or other safety issues. It's always best to use the thermostat for regular operation to ensure proper control and maintenance.

How are furnace switches wired?

Furnace switches are typically wired using a standard electrical method where a switch is connected to the furnace's power supply. The switch is usually installed in line with the power source, allowing it to interrupt the electrical flow to the furnace when turned off. This setup typically involves connecting the hot wire from the power supply to one terminal of the switch and a wire leading to the furnace to the other terminal. Additionally, a neutral wire may also be connected to complete the circuit, and grounding is essential for safety.

How old is your Stevens Savage Model 87R and is it worth fixing?

The Stevens Savage Model 87R was produced from the late 1940s to the early 1960s, making it potentially 60 to 80 years old depending on the specific year of manufacture. Whether it's worth fixing depends on its current condition, sentimental value, and your intended use. If it's in good shape and you appreciate vintage firearms, it could be worth repairing. However, if it has significant damage or you're not attached to it, it may be more practical to consider other options.

What causes a the flame to roll out on a gas furnace?

A flame roll-out on a gas furnace typically occurs when there is a blockage in the venting system, causing combustion gases to back up and not exit properly. This can lead to an unsafe condition where the flames extend beyond the burners. Other potential causes include improper air-to-gas mixture, malfunctioning safety controls, or a dirty burner that affects combustion efficiency. Regular maintenance and inspection are essential to prevent this hazardous situation.

What does a solid red light on a trane xe80 furnace mean?

A solid red light on a Trane XE80 furnace typically indicates that the furnace is in a lockout mode due to a safety issue or malfunction. This could be caused by various factors, such as a blocked vent, a faulty pressure switch, or an ignition failure. To resolve the issue, it's advisable to check the furnace's air intake and exhaust for obstructions, reset the furnace, and consult the user manual or a professional technician if the problem persists.