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.
no
direct material
Empire 35,000 BTU Direct Vent Counterflow Wall Furnace is one of the safest models.
The capacitive ignition, it is a direct ignition.
direct ignition engine
Separate ignition coils for each cylinder. Commonly known as direct ignition.
An oil fried furnace
High furnace pressure is a direct indication of a disturbance in combustion performance. The rate of change in the furnace pressure can vary very much, that is from a simple sudden surge due to fuel variations to a huge furnace explosion
sidi means Spark Ignition Direct Injection
Separate ignition coils for each cylinder. Commonly known as direct ignition.
It vents directly out the side of the house n doesnt need a chimney
It means the direct relationship the color pigmintation has on the display.