Oil burner's test | 200 Questions| accurate Answers(GRADED A)

In an electric circuit for the wattage to remain the same if the voltage drops, the amperage must - ANSWER Increase Atomizing type burners were designed to burn which type of fuel - ANSWER Type 2 fuel oil Pour point problems with outside above ground fuel tanks can be partially relieved by - 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 - ANSWER In the furnace room with 5' of heating unit. The primary purpose of a fuel pump on a high-pressure burner is to - ANSWER Deliver oil at a constant and regulated pressure to the nozzle If the vacuum reading is substantially above the calculated reading, (with the burner running) the cause may be - ANSWER Plugged fuel filter, Kinked oil supply line, Check valve sticking With most new flame retention burners, the motor speed is - ANSWER 3450 To check for proper nozzle line cut-off, the pressure gauge is installed in the - ANSWER Nozzle Port Fuel units are generally set at the factory at - ANSWER 100psi The oil burner nozzle in a high-pressure burner performs the following functions - ANSWER Atomizes the oil Provides a pattern of oil spray Delivers a fixed amount of oil The nozzle flow rate, spray angle and pattern are directly related to - ANSWER •Tangential slots . Swirl chamber Orifice Cold oil or high viscosity problems may be eliminated by - ANSWER •Increasing pump pressure and reducing nozzle size • Installing a nozzle line pre-heater The following conditions or elements affect choosing the correct nozzle spray pattern - ANSWER •Air-oil mixing design of burner •. Shape of the chamber Which condition affects nozzle spray droplet size? - ANSWER Fuel Pump Pressure To burn one pound of fuel oil, it takes how many pounds of air? - ANSWER •14.4 lbs. A layer of soot 1/16" thick will increase fuel consumption by (Fuel consumption increase by 2 % for each 1/32 of soot) - ANSWER 8% When sizing a combustion chamber for a firing rate of 1.00 gph you should provide a minimum floor space of (•20 square inches per 0.25 of GPH) - ANSWER •Between 80 to 100 square inches The most common type of burner design in use today is the - ANSWER High pressure atomizing Poor draft due to a faulty chimney may be improved by installing a good - ANSWER •Draft inducer The pressure differential produced by chimneys is best measured with a draft gauge in - ANSWER Inches of water column The most important draft measurement to be taken on any oil-fired unit is - ANSWER The draft at the breech The draft over the fire The proper location to install a draft inducer is - ANSWER •In the flue pipe between the draft regulator and the chimney Using combustion test instruments to measure the composition and temperature of the flue gas as they leave the heating unit will indicate the - ANSWER Steady state efficiency The holes that are provided in the flue pipe for combustion testing must be - ANSWER •Between the heating unit and the draft regulator When using a pump ty