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.
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
no
Empire 35,000 BTU Direct Vent Counterflow Wall Furnace is one of the safest models.
The capacitive ignition, it is a direct ignition.
direct material
direct ignition engine
Separate ignition coils for each cylinder. Commonly known as direct ignition.
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
An ashing furnace is specifically designed for high-temperature applications to burn off organic material and leave only ash residue. A muffle furnace is used for general heat treatment processes where the sample is heated in a chamber, known as a muffle, to protect it from direct contact with the heating elements.
It means the direct relationship the color pigmintation has on the display.