Sequence Of Operations For A High Efficiency Gas Furnace

Gas furnaces sequence of operation troubleshooting.

Sequence of operations for a high efficiency gas furnace.

While most furnaces will follow the below sequences there may be variations in models and manufacturers. If a technician is to properly troubleshoot a gas furnace he needs to know the proper sequence of operation for the particular furnace he is troubleshooting. These pvc pipes are connected to the furnace and expelled outside. A trane gas furnace is powered by natural gas.

The typical sequence of operation is. A narrated sequence of operation on an 80 natural gas furnace. Atimed purge takes place typically 15 to 30 seconds. Gas furnace sequence of operation.

In gas furnace troubleshooting i believe the most common furnace to fail is the furnace that. Sequence of operation gas furnaces. The thermostat reaches a set temperature and sends a signal for the furnace to turn on. The differential pressure switch is satisfied.

We see time and time again that technicians order multiple parts to repair a gas furnace. And it has a gas burner with electronic ignition although condensing. It moves the air with a circulating fan. Trane offers a wide selection of gas furnaces which come in three different heating stage options.

The electronic ignition ignites the main burner. This high efficiency venting system must be installed when you install the new furnace. After 1 hour the furnace will start the entire sequence again to try to fire off. The inducer motor begins to spin and creates a vacuum to insure the left over gasses go out the exhaust pipe.

A modulating furnace brings the most versatility energy efficiency and comfort but usually at a higher cost than other models its blower and flame alternate up to the minute to reflect your heating needs. Thermostat calls for heat. How a high efficiency condensing furnace differs. Brian baker hvac tech representative.

Knowing the sequence of operation of a gas furnace will save time and money on troubleshooting calls. If the flame is proved a timer is started to delay the start of the circulating fan for 30 to 40 seconds. Today i want to give you a basic sequence of operation for a standard gas furnace aka 80 efficiency furnaces. Gas furnaces sequence of operation why is furnace sequence of operation important.

The induced draft fan comes on. A narrated sequence of operation on an 80 natural gas furnace. While the condensing furnace is different in its design and repair needs it does have some similarities to a conventional furnace like a conventional furnace it takes in cold air from the house and runs it through an air filter.