Baumann & DeGroot – Furnace Diagram
1.) Cool Air Return
As the warm air leaves the furnace and circulates through your home it cools off and picks up cold air along the ductwork. This cold air is brought back to the furnace through the cool air return, where it is filtered and reheated before being sent back through your home.
2.) Air Filter
The air filters job is to help purify the air in your home. It helps keep your indoor air quality up to par and doubles as an efficient way to keep debris out of your furnace. You need a filter because without it particles can enter your furnace and cause damage.
3.) Control Board
The control board is the brain of the furnace. It is responsible for receiving data from your thermostats and adjusting the temperature accordingly. It takes all inputs, or changes required and sends them to the rest of the furnace so they can operate correctly. Most control boards have an LED light called a “debug” light that can assist in diagnosing the problem.
4.) Blower Motor
The blower motor is responsible for taking the cold air from the cool air return and pushing it up over the heat exchanger. The heat exchanger is where the cool air absorbs heat from your furnace. After going over the heat exchanger the blower motor pushes the hot air through the home to raise the temperature.
5.) Drain Trap
Your furnace produces small amounts of vapor that condensate throughout the heating process. As this vapor condensates it turns to liquid and needs to be removed from the system. The drain trap is apart of this draining system. It helps catch any particulates, debris, or anything that enders the drain system to make sure the condensate can drain properly. If clogged these can cause issues with the functioning of the system.
6.) Inducer Motor
The inducer motor is responsible for removing any gasses from the heat exchanger before the burners are activated. This makes sure no combustible gases remains before the heating process begins. Before ignition the inducer will push any excess gas from the last time the heater was activated out of the system.
7.) Gas Valve
The gas valve is the responsible for the flow of gas into the furnace. As it opens, the gas valves allow the perfect amount of gas into your burner. Where it then combusts and begins heating your home.
The igniter is responsible for the combustion of the natural gas in the furnace. The igniters found in HVAC system are not your standard spark system you’re used to. A furnace igniter super heats to around 2000 degrees to combust the natural gas without producing a spark.
9.) Flame Sensor
The flame sensor is a safety tool in a furnace system. As the gas valve allows natural gas to the burners and the igniter tries to ignite the fuel, the flame sensor makes sure the gas combusts. If the sensor does not detect a flame then it will shut off the system to prevent natural gas from being pumped in without being ignited.
This component of a furnace is where the next stage taxes place. The burner is responsible for producing the flames used to heat up the air passing through the heat exchanger. It is where the fuel is combusted and mixed with the air within the system. The flames should be a stable blue if the burner is functioning correctly.
11.) High Limit Switch
The high limit switch is a very important piece of the furnace. It controls the fans in the system, and will turn them off or on according to what is needed to warm the home. It also can detect if the furnace has warmed the air too much, and shut off the system if the interior temperature of your home gets too high. This can help increase the longevity of your furnace components.
12.) Hot Air Supply
After the process of warming the air is completed, the air is then pushed up and out the hot air supply. When the hot air enters the hot air supply it goes throughout your home using the duct work.
If you are in need of furnace services or replacement contact the experts at Baumann & DeGroot here or call 616-396-4328. This furnace diagram is designed to help homeowners understand the parts of their furnace and how they function.