Oil Burners
What is the igniter and what is it called on a oil burner?
This component ignites the oil to create combustion.
Electrodes
What is most common type of fuel used in residential oil furnaces.
No.2 Fuel
What is an indirect water heater?
a storage tank that produces domestic hot water using your home's central heating system (like a boiler or furnace) rather than having its own dedicated burner.
What does LWCO stand for?
Low-Water Cutoff
What does PPM stand for?
Parts per Million
What is the nozzle?
This part of the oil furnace atomizes the fuel for combustion.
What is atomization?
The process of breaking oil into tiny droplets (mist) for efficient combustion.
What two materials are used in radiant flooring heat?
plastic and composite
What is a temperature-sensing switch used in hydronic (hot water) heating systems, such as boilers called?
aquastat
Name 3 main differences between a high efficiency and mid efficiency furnace.
PVC flue, secondary heat exchanger, condensate line
What is the cad cell?
This safety device prevents the burner from running if no flame is detected.
Where does the excess oil go in a two pipe system?
the accumulator
What is the purpose of an expansion tank?
to provide space for water to expand as the system heats up.(thermal expansion)
What is the lowest temperature a non-condensing boiler be set at?
140 degrees F
Name 3 reasons why you could have a high heat rise on a gas furnace.
restricted air flow, bad blower motor, & clogged heat exchanger
What is the primary control?
This component controls the start and stop of the burner motor.
What is the efficiency range for a oil furnace?
78-85%
What is the safety component that monitors water movement in a boiler system.
flow switch
What test is performed to check the efficiency and safety of combustion?
combustion analysis test
What do is measurement unit for static pressure?
inch of water column
What is the combustion chamber?
This part acts as the heat exchanger in an oil furnace, transferring heat to the air.
What are the three primary requirements for combustion?
fuel, air, and ignition
What is the specialized check valve called that prevents water in the hydronic system from flowing back in the water main?
backflow preventer
Explain what a outdoor reset control is for and what is the purpose.
An outdoor reset control is an energy-saving device that automatically adjusts a boiler's water temperature based on the weather. Instead of keeping the water at a constant, high temperature, it tells the boiler to produce cooler water on mild days and hotter water on freezing days.
List the sequence of operations for a gas furnace.
1. tsat 2.inducer motor 3. air pressure switch 4. Ignitor 5. gas valve 6. flame sensor 7. blower