Study guides, Class notes & Summaries

What chemical compound is the CAD cell made of? - correct answer a. cadmium oxide b. cadmium nitride c. cadmium sulfide d. cadmium bromide Answer-C A permanent split-capacitor motor has a ____. - correct answer a. start and run capacitor b. start capacitor only c. run capacitor only d. split phase capacitor Answer-C for replacement or installation, it is good practiced to use the _________ rule to properly size the right tank for that customer. - correct answer a. 1/4 b. 1/2 ...

What is the first thing a tech should do when arriving at a no combustion call? - correct answer Ask how many times the customer reset the unit. What is the best long term solution for preventing a clogged nozzle? - correct answer -Remove any underground storage tanks. -Install a quality oil filter. -Cut the suction line 10" above the tank outlet to prevent sludge. Hot water and steam valves are interchangeable. - correct answer False When in the presence of a flame, a cad cell nor...

The main function of the primary control is: - correct answer Locking out on safety in the event of flame failure Power must be provided to an electric blower control board on terminals: - correct answer L1 and L2 Once a PSC motor starts - correct answer The centrifugal switch turns off the electricity to the capacitor and the start windings Materials who's electrons are so loosely bound that they can be persuaded to move with very little pressure allowing electricity to flow are calle...

In an electric circuit for the wattage to remain the same if the voltage drops, the amperage must - correct answer Increase Atomizing type burners were designed to burn which type of fuel - correct answer Type 2 fuel oil Pour point problems with outside above ground fuel tanks can be partially relieved by - correct answer Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil. A fuel oil storage tank cannot be installed - correct answer In the furnace room with 5'...

What is the largest exposed tank allowed in a building without a permit - correct answer 660 g What is tank approval - correct answer UL 80 UL 142 A supply tank shall be securely supported by ridged, non-combustible supports to prevent settling, sliding or lifting. true or false - correct answer True What is the largest amount of oil that can be stored with exposed tanks? - correct answer 1320 g What is the closest distance a supply tank can be to the burner - correct answer 5 ft ...

What are the 3 funtions of an Oil Burner nozzle? - correct answer Atomize, Meter, Patter. What are the 2 voltage circuits of a primary control? - correct answer Line & Low. What is the function of a fuse? - correct answer Protect circuit. What is the High Limit cut out? - correct answer Max safe Temp or Pressure setting. What is the High Limit cut in? - correct answer Cut out minus Differential. What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? - correct answer...

For every pound of fuel that is burned, how many pounds of primary air are required? - 14.4 For every pound of fuel that is burned, how many pounds of excess air are required? - 7.2 Which of the following can cause the oil burner overload protector to trip? - -Seized oil pump -Seized burner motor When testing an ignition transformer using the arc test method, the arc should be a minimum of: - 1/2" The newer flame retention type combustion heads (flame retention rings): - Are m...

Flame quality has no effect on the cad cell - False A material that will easily allow electrons to pass is described as - Conductor The safety ground is required by UL to be colored - Green A solenoid valve operates on the following principle - Electromagnetism What type of meter requires a battery - Ohmmeter The purpose of a limit control is - Safety Switching relays for heating systems can be found in the following switching configurations - SP-ST, DP-ST, DP-DT. All th...

The most common type of burner design in use today is the - High pressure atomizing Poor draft due to a faulty chimney may be improved by installing a good - •Draft inducer The pressure differential produced by chimneys is best measured with a draft gauge in - Inches of water column The most important draft measurement to be taken on any oil-fired unit is - The draft at the breech The draft over the fire The proper location to install a draft inducer is - •In the flue pipe ...

Regulating valve - To build up and maintain the proper operating pressure for atomizing the oil Ignition transformer or solid-state igniter - provides a "step up" from the line voltage of 120 volts to over 10,000 volts Nozzle assembly - consists of the oil feed pipe (called the nozzle line), the nozzle, nozzle adapter, electrodes, transformer connections, and on some burners, a flame retention ring. Combustion head - creates a specific pattern of air at the end of the air tube ...