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UNIT 57 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
57-1) What factors should be considered when selecting an oil fired furnace?
57-2) What is the proper service clearance that should be allowed when installing a
furnace?
57-3) What is the firing rate of a furnace with a Beckett AFG-FG burner and a 0.75 gph
70-B nozzle? (refer to Table 57-1)
55-4) What is the heating capacity of an 80% efficient furnace with a Beckett AFG-FG
burner and a 0.75 gph 70-B nozzle? (refer to Table 57-1)
57-5) What would be the required vacuum for an oil furnace located 5 feet above the oil
tank with a horizontal run of 20 feet?
57-6) What national standard is a good reference when installing oil furnaces?
57-7) What free air opening would be required for an oil furnace installed in a confined
space if the air was coming through horizontal ducts and the furnace had a Beckett
AFG-FG burner and a 0.65 gph 70-W nozzle? (refer to Table 57-1)
57-8) Calculate the equivalent length of a 6 inch diameter chimney connector with two
57-9) How high must the chimney be above the connector entrance for the connector in
question 8 to operate properly?
57-10) What type of material must be used for chimney connector in a crawlspace?
57-11) Describe where the barometric damper should be installed in the chimney
connector.
57-12) How would the primary control need to differ to accommodate power venting?
57-13) What is a disadvantage to direct venting an oil fired furnace?
57-14) What problems can arise from an oversized oil storage tank?
57-15) How much fuel should a properly sized oil storage tank hold?
57-16) What is the function of an oil safety valve?
57-17) Give a pre-start checklist when checking a newly installed oil furnace.
That the correct nozzle size has been selected for desired input rate.
All shipping supports are removed.
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Reset button on the primary control is pushed down.
Flame observation door and all cleanout access covers are closed.
The thermostat is set to HEAT at a temperature higher than the room.
57-18) What measurements should be taken when setting up a new oil furnace?
57-19) What national publication is a good reference for chimney construction?
57-20) What types of appliances may oil furnaces be common vented with?
