What happens if gas pressure is too high?

What happens if gas pressure is too high?

High gas pressure can be just as bad for your furnace. That’s because it greatly increases the risk of furnace overheating. When this happens, all manner of internal components may become damaged by the excessive heat.

What are four factors that determine the efficiency of a furnace?

What are four factors that determine the efficiency of a furnace? Factors that determine the efficiency of a furnace are the type pf draft, the amount of excess air, the temperature difference of the air or water entering versus leaving the heating medium side of the heat exchanger, and the flue stack temperature.

Why is excess air supplied to all gas burning appliance burners?

Why is excess air supplied to all gas-burning appliance burners? Air and gas never mix completely in the mixing tube chamber. Extra air is supplied so that the methane will have oxygen to burn completely.

What controls the amount of gas entering the burner?

A precisely drilled hole that controls the amount of gas entering a burner is called: An orifice.

Why does this gas require a 100% shut off?

Because they are flammable.

Why do gas furnace efficiencies jump from 80% to 90 %?

Why do gas furnace efficiencies jump from 80% to 90%? Efficiencies over 80% cause condensation but the flue gas is still too hot for PVC vent pipe until the efficiency reaches 90%.

What is the difference between 80 and 90 Furnace?

With an 80% furnace, the lost 20% of heat energy is exhausted through the furnace’s vent to the outside. A 90% furnace has a secondary heat exchanger to recover these lost gases which then diverts the gases into a condensing phase. This process retains more heat and lowers your energy bills.

Is an 80 efficiency furnace good?

Most of the time, the slower speed is sufficient for heating your home and doesn’t require as much energy as a single-stage furnace. An 80% furnace with two stages of heat will usually be better for your energy bills than a 95% furnace with just one stage. Some 95% furnaces even come with a fully modulating gas valve.