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Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% Correct Answer C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40...
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Add to cartSince 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% Correct Answer C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40...
Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% Correct Answer C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40...
Preview 2 out of 12 pages
Add to cartSince 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% Correct Answer C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40...
What precautions are required when mounting any gas furnace on a wood platform in an attic? Correct Answer None The gas control valve may be damaged if exposed to an inlet pressure above what? Correct Answer 14 inch W.C. How many elbows and joints should a vent connector have? Correct Answer A...
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Add to cartWhat precautions are required when mounting any gas furnace on a wood platform in an attic? Correct Answer None The gas control valve may be damaged if exposed to an inlet pressure above what? Correct Answer 14 inch W.C. How many elbows and joints should a vent connector have? Correct Answer A...
B (heat exchanger) Correct Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. A. Gas valve B. Heat exchanger C. Inducer fan D. Plenum box A (Gravity) Correct Answer What type of furnace moves warm air through the conditioned sp...
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Add to cartB (heat exchanger) Correct Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. A. Gas valve B. Heat exchanger C. Inducer fan D. Plenum box A (Gravity) Correct Answer What type of furnace moves warm air through the conditioned sp...
3/8 to ½ inch of the end of the thermocouple Correct Answer Should be enveloped by the pilot flame A control string is defined as two or more switch contacts connected in a circuit, or set of circuits, to control a load. In order to troubleshoot a load controlled by a control string, the technic...
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Add to cart3/8 to ½ inch of the end of the thermocouple Correct Answer Should be enveloped by the pilot flame A control string is defined as two or more switch contacts connected in a circuit, or set of circuits, to control a load. In order to troubleshoot a load controlled by a control string, the technic...
What precautions, if any, must be taken when installing a gas furnace on a wooden platform in an attic? Correct Answer Use a zero-clearance furnace or add a non-combustible base A vent connector should have a as few elbows and joints as possible to: Correct Answer Reduce resistance of flue gases ...
Preview 3 out of 16 pages
Add to cartWhat precautions, if any, must be taken when installing a gas furnace on a wooden platform in an attic? Correct Answer Use a zero-clearance furnace or add a non-combustible base A vent connector should have a as few elbows and joints as possible to: Correct Answer Reduce resistance of flue gases ...
An intermittent pilot gas furnace is one in which a(n): Correct Answer Pilot is lit on every call for heat. Induced draft blowers in direct vent condensing furnaces pull combustion air from: Correct Answer Outdoors only. A vertical vent in an induced draft non-condensing gas furnace that is to...
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Add to cartAn intermittent pilot gas furnace is one in which a(n): Correct Answer Pilot is lit on every call for heat. Induced draft blowers in direct vent condensing furnaces pull combustion air from: Correct Answer Outdoors only. A vertical vent in an induced draft non-condensing gas furnace that is to...
The discharge of the bypass humidifier is installed: Correct Answer in the return air duct The first stage of a two-stage gas furnace permits: Correct Answer reduced CFM and shorter burner on times. The purpose of the International or National Fuel Gas Code is to: Correct Answer provide the mi...
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Add to cartThe discharge of the bypass humidifier is installed: Correct Answer in the return air duct The first stage of a two-stage gas furnace permits: Correct Answer reduced CFM and shorter burner on times. The purpose of the International or National Fuel Gas Code is to: Correct Answer provide the mi...
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