A condensing furnace - Study guides, Class notes & Summaries

A customer calls with an insufficient cooling compliant. upon arrival to the service call it is found that the outdoor condensing unit is operating, but the indoor blower motor is not in operation. Technician A says that it is possible that it is bad fuse to the furnace Technician B says the control transformer could also be at fault Who is correct? - ANSWER Neither is correct What is commonly used to measure a deep vacuum? - ANSWER a micron gauge The system used to measure the effi...

NHIE-Nachi HVAC System | Questions and Answers High-efficiency condensing HVAC systems produce excessive _______________. Condensate Forced-air furnaces function primarily by ________. Convection Radiation is the transfer of heat energy by _________________. electromagnetic wave motion Heat can move from one body to another by _________. Radiation Heat is transferred _____________. in direct rays Heat transferred within a gas or liquid happens via __________. Convection Heat transferred throug...

b. end 1 inch above the waste drain line - - - - A condensate line should ______________. a. empty directly into the waste drain line b. end 1 inch above the waste drain line c. not drain into the waste drain line d. extend at least 1 inch into the waste drain line c. is more efficient than conventional furnaces and uses a secondary heat exchanger - - - - A condensing furnace _____________. a. works like an air conditioner, except that it heats instead of cools b. is a furnace covered in...

Esco Heating 208 | 100% Correct Answers | Verified | Latest 2024 Version 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 - 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. - C: temper...

INTERNACHI EXAM 2024 |238 QUESTIONS | WITH COMPLETE SOLUTIONS, SCORED A+

Hvac Exam All Answers Correct Sealing up even small openings in a building conserves energy because... it stops the infiltration of outside air or ex-filtration of comfortable conditioned inside air by way of convection currents Heat is easily transferred through windows and chimneys and not easily through insulation True Which of the following items would not be a part of a gas furnace forced air perimeter heating system? Boiler In a forced air heating system, a(n)... is a system of...

If a natural gas piping system fails a pressure test, the technician must re-pressurize the system and check for leaks with? - Answer-soap bubbles a pressure relief valve is installed to? - Answer-avoid exceeding the system limits In a refrigeration system, what must be installed at 10' intervals on the suction line if the compressor is above the evaporator? - Answer-Trap What occurs if a 3 amp load is connected to the secondary winding of a 24 volt, 40 V.A. transformer? - Answer-Transfor...

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 too tall for its furnace capacity will have what problem if any? Correct Answer Excessive condensation in the vent. In the sequence of operation of an induced draft, intermittent pilot gas furnace, t...

NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update 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% C: 60% D: 80% - correct answer C: 60% Today, furnaces with AFUE ratings greater than are available. A: 85% B: 90% C: 100% D: 110% - correct ...

After steam gives up its energy and changes its phase to a liquid, it is referred to by what name? correct answers Condensate Atmospheric boilers utilize natural draft generated by the stack for the introduction of combustion air into the boiler. correct answers true One of the advantages of using electricity as a fuel is that it does not require combustion air. correct answers true An open system is identified by what condition? correct answers Fluid surface is exposed to the atmospher...