Esco Heating 208 Questions And Answers With Latest Study Quiz

1. A gas furnace is to be installed in a garage. The burners and ignition sources must be located ______ above the floor. A: 6 inches B: 12 inches C: 18 inches D: 24 inches - Answer-C: 18 inches 2. A good description of how hi-metai fan switch operates the blower motor on a gas furnace is: A: temperature on - time off. B: temperature on - time on. C: temperature on- temperature off. D: time on - time off. - Answer-C: temperature on- temperature off 3. Redundant gas valves used on gas furnaces will shut down if gas pressure exceeds: A: 30.5 in. W.C. B: 60.5 in. W.C. C: 10.5 in. W.C. D: 13.5 in. W.C. - Answer-D: 13.5 in. W.C. 4. Burning one cubic foot of Liquefied Petroleum gas completely will produce approximately ____BTU's. A: 2,000 - 2,500 B: 1,500-2.000 C: 1,200-1,500 D: 900-1,100 - Answer-A 5. LP gas has a specific gravity of:A: .4-.8 B: 1.0-1.1 C: 1.5-2.0 D: 2.5 -3.0 - Answer-C: 1.5-2.0 6. What is the purpose of a spoiler screw located on a burner? A: Mix combustion and dilution air B: Mix primary and secondary air. C: Mix primary air and gas. D: Mix dilution and excess air. - Answer-C: Mix primary air and gas 7. Furnace limit switches are wired in series with the: A: low speed fan B: high speed fan C: gas valve D: heat anticipator - Answer-C: gas valve