Nate industry Study guides, Class notes & Summaries

The NATE Industry Competency Exam: Heat Pumps Q&A A correct statement regarding the outdoor coil of a heat pump is that damage may result if the: a. Indoor blower fails to operate. b. Defrost water does not drain from the coil. c. Indoor check valve sticks. d. Outdoor metering device sticks open. - CORRECT ANSWER-B If this unit is installed on 208 volts, the transformer primary should be wired: a. To the black and red leads of the transformer. b. To the black and orange leads of the...

Which of the following is one of the prime safety concerns in positioning a gas furnace for installation? a. An adequate gas supply. b. The availability of flue within 2 feet of the appliance. c. Clearance from combustible materials. d. Distance from circuit breaker. - Answer- C The discharge of the bypass humidifier is installed: a. In the supply duct. b. In the exhaust air duct. c. In the return air duct. d. In the makeup air duct. - Answer- C For proper burner operation, the...

A correct statement regarding the outdoor coil of a heat pump is that damage may result if the: a. Indoor blower fails to operate. b. Defrost water does not drain from the coil. c. Indoor check valve sticks. d. Outdoor metering device sticks open. - Answer- B If this unit is installed on 208 volts, the transformer primary should be wired: a. To the black and red leads of the transformer. b. To the black and orange leads of the transformer. c. To the red and orange leads of the tra...

With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. - CORRECT ANSWER D An indication of non-condensable gas in a refrigeration system is significantly: a. Lower-than-normal suction pre...

4. NATE Industry Competency Exam Heat Pumps Questions and Answers

On a new oil furnace installation, the oil pump pressure is found to be 50 PSI. which of the following actions should be taken? a. Increase the pump pressure. b. Add a new fuel filter. c. Reduce the pump pressure. d. No action needed. - Answer- A After installation and 20 min. of run time and oil furnace is found to have CO2 if 8%. which of the following could cause the low CO2 reading? a. Oil pump pressure of 100 psi. b. Misaligned cad cell. c. Excess primary air. d. Dirty combus...

4. NATE Industry Competency Exam Heat Pumps Questions and Answers

NATE Industry Competency Exam: Commercial Refrigeration 2023 Questions and Answers with complete verified solutions 100% solutions With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. -...

3. NATE Industry Competency Exam. Air Distribution