Card Set Information
oil hvac mode
oil cards for mode 4
what are 6 grades of fuel oil?
kerosene or jp5, home heating oil and diesel fuel, left over oil from 2, 5L (light) 5 H (heavy)
and last remaining oil after the others are used up
what are some properties of #2 fuel oil
it contains 140,000 btus, oil is lighter then water, it is 85% carbon and 15% hydrogen
what does A.F.U.E stand for?
Annual Fuel Utilization Efficiency
the lowest temperature that vapors above the fuel will ignite
describes a fluids internal resistance to flow
what is viscosity rated as
Saybolt Universal Seconds (SUS)
the lowest temperature oil is pumped at
what happens when temperature is past its pour point?
creates paraffin or wax crystals and congeal
what is the lowest temperature for pour point?
it is before pour point happens, it is the beginning stages of paraffin and congealing
is the amount of non-combustibles in the oil or stuff that doesn't burn
is the rapid oxidation of a substance
how is combustion created?
the combination of fuel, air and a ignition source
what are combustion chambers made of?
steel, refectory brick and cerafelt
what 2 things are mixed in and burned in the combustion chamber
air and oil
what is a heat exchanger?
surrounds the combustion chamber and vents by products of combustion
what are three types of heat exchanger?
hotizontal, upflow, downflow
what are two types of upflow
high boy and low boy
what are the 8 main parts to any oil burner
motor, fuel unit or fuel pump, drawer assembly, pump coupling, squirrel cage, air tube, transformer, primary control
how much rpms are in a burner motor
1725 and 3450
fits on the shaft and is connected to the fuel unit to pull oil from the tank
conduct the spark from the ignition transformer to ignite the oil
how many degrees is flashpoint #2
the process of changing liquid fuel into tiny droplets to be burned
name four byproducts of the combustion of #2 oil
heat, water vapor, Co2, nitrogen
what are 2 ways to detect flame on an oil appliance (devices)
stack relay, cad cell relay
what is draft?
the remaining percentage of useable heat
what color light does a cad cell respond to?
letters and numbers on a oil nozzle will tell you 3 things what are they?
hollow cone, solid cone, semi hallow cone
electrodes have 3 settings what are they?
distance from each other, distance above the nozzle, distance forward or backward from nozzle