HVACR GAS HEATING ESCO EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

HVACR GAS HEATING ESCO EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS using an ohmmeter, there is 120 VAC between high speed and ground wires, this indicates - Answer -open if temperature rise is too high... - Answer -increase fan speed how many of the 3 OSHA conditions defining confined spaces must be met - Answer -all 3 what causes the temperature limit safety switch to shut off the burner - Answer -fan motor failure flashback indicates - Answer -the gas is flowing slower than the speed at which burn is occurring what type of connector is used to control noise in ductwork - Answer - vibration eliminators if the main burner lights and after a minute the blower fan comes on but the burner flames waver in one corner... - Answer -there is faulty blower housing a burner orifice... - Answer -meters gas to the burner when lockout/tagout is used - Answer -there should be 1 key kept by the electrician