Orange or yellow flames, or sooty flames, means you could have incomplete combustion happening , which could lead to carbon monoxide buildup in your home. There might be an air-gas mixture problem, or a problem with the gas pressure to the appliance.
What could result if a flame is adjusted with too much primary air?
If flue gases are not vented properly, carbon monoxide poisoning could result. The gas flame will lift off the burner and be noisy if it receives too much primary air. Another name for a downflow heating unit is______.
What are the 4 types of gas furnace airflow patterns?
| The four types of gas furnace air flow patterns are_________, ________, _________ and___________ up flow, down flow, low boy and horizontal | Two gas valve physically in series but wired in parallel are A : Series valves B : Redundant valves C : Parallel valves D : None of the above B : Redundant valve |
|---|
Which of the following gases requires a 100% gas shutoff?
Liquified Petroleum gas (LP) requires 100% safety shut-off and even though it is not required by code on natural gas units, Bard believes it is an extra safety feature. On an LP unit, when the pilot flame goes out the pilot valve must close, preventing any pilo gas from entering the heat exchanger.
Will a gas flame carry electrical energy?
A gas flame will carry electrical energy . with a heat content of about 1,050 Btu/cu.
Why do gas furnace efficiencies jump from 80 percent to 90 percent?
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 typical control voltage for a gas furnace?
Some types may use voltages as low as 6 volts or as high as 30 volts, but 24 volts is the most common type.
How is the air adjusted on a typical gas burner?
Adjust Burner To adjust primary air, allow at least 10 minutes for the burners to heat up ; close primary air shutter until yellow flame tips appear, then open air shutter until all yellow completely disappears. The flame should be clear blue.
What causes a floating flame?
The Floating Flame
Because combustion byproducts are inflammable , normal ignition of burner gas is inhibited due to a lack of sufficient oxygen. Initially, the burner flame may appear to float several inches above the burner, reflecting delayed ignition.
What is the difference between a yellow gas flame and an orange gas flame?
What is the difference between a yellow gas flame and an orange gas flame? Yellow flame represents starved air flame . Carbon monoxide produced. Orange flame represents burning of dust.
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 are the two types of pilot lights?
There are two types of electronic ignition, intermittent pilot and hot surface ignition . An intermittent pilot system generates a high voltage electrical spark whenever the thermostat calls for heat. This spark ignites a gas pilot, which then works just like the standing pilot light did.
Is natural gas lighter than air?
Natural gas is lighter than air and rapidly dissipates into the air when it is released. ... Propane gas is similar to natural gas in many ways and is also used as a fuel. The most significant difference between propane and natural gas is that propane gas is HEAVIER than air.
What is the proper color of a gas flame?
A healthy, properly burning flame on gas appliances should be blue in color, sometimes with a tiny tip of yellow, with a little light blue triangle at the center . This blue color flame indicates that there is safe, efficient and more complete fuel combustion.
Will a gas stove work without electricity?
In the case of a power outage, you can light the surface burners on your electric ignition gas or dual fuel range or gas cooktop using a match. Hold a lighted match next to the burner, then turn the knob to the low position. ... 1990 and newer gas ovens cannot be lit without power supplied to it .
Which of the following could be the cause of a lazy yellow pilot flame?
When the amount of oxygen to a pilot light is restricted, it becomes a “lazy” flame and burns yellow instead of blue. The most common reason why a pilot light would start to burn yellow is that the air intake valve to the pilot light is clogged with dirt .
