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Seguence of operation for a direct ignition gas furnace?

If the furnace is direct ignition, The HSI or spark ignites the flame. A flame sensor passes current through the flame, if current is present the main.


Auto Ignition requires a pilot flame?

NO


What is the ignition temperature of pariffin wax?

For "piloted" ignition (i.e., ignites when a flame is applied), 390F. For spontaneous ignition, 473F.


What do you need to start a flame?

You simply need an ignition source (something to spark the flame) and a fuel (something to keep the flame going).


What color of flame was produced upon ignition of butane?

A blue flame is produced upon ignition of butane, indicating complete combustion with efficient energy release.


What will prevent the ignition of gasoline fumes in a backfire?

Flame arrestor.


What does a Flame sensor in a hot surface ignition furnace do?

It tells the furnace that it lit... Hence the name Flame Sensor.


What is flame rectification?

Flame rectification is DC electrical circuit that sends a very small voltage (rated in micro amps) from the furnace electronic board up through the pilot electrode. When pilot flame is established the flame acts as a path (conductor) which allows the DC current to flow from the flame rod to ground completing the circuit. This completed signal tells the electronic board it's ok to allow the main gas valve to open . Now your furnace pilot, or hot surface ignitor will start the main flame . To put it simple, flame rectification is an electronic way to prove pilot flame before opening the main burner gas valve. It's a safety circuit to prevent the main burner gas valve from opening if there isn't apilot flame, or hot surface ignitor established.


How do they use flame throwers?

The main components is a fuel supply, a fuel delivery system, and a pilot flame to start the ignition.


Did it take long for the flame to appear?

It took only a few seconds for the flame to appear once the ignition source was applied.


When measuring the flame signal the technician should place the Dc micro ammeter in with the ground wire from the ignition control?

When measuring the flame signal, the technician should indeed connect the DC microammeter in series with the ground wire from the ignition control. This setup allows the ammeter to measure the current flowing through the flame sensing circuit, which is indicative of the flame's presence and quality. Proper placement ensures accurate readings, helping diagnose any issues related to flame detection in the system. Always ensure the system is powered down before making connections to avoid electrical hazards.


What is difference between pilotless gas range and electronic ignition?

A pilotless gas range uses an electronic ignition system that eliminates the need for a continuously burning pilot light to ignite the gas. Instead, it generates a spark or uses a hot surface igniter to light the gas when the burner is turned on. In contrast, a traditional pilot light is a small, constant flame that remains lit to ignite the gas when needed. The pilotless system is typically more energy-efficient and safer, as it reduces the risk of gas leaks associated with a constantly burning flame.