Nate Installation Guidelines Review Questions and answers

What precaution must you take when installing a dual-fuel split system? A. The control system must not allow the heat pump and furnace to operate at the same time during a normal heating cycle. B. The high-limit switch on the heat pump must be replaced with one that has a lower temperature setting C. The high-limit switch on the heat pump must be replaced with one that has a higher temperature setting. D. The limit control on the furnace must be replaced with one that has a manual reset. A. The control system must not allow the heat pump and furnace to operate at the same time during a normal heating cycle What problem is likely to occur if a proper trap is not used on the condensate drain for a draw-through unit? A. Condensate water will not drain properly and will back up above the primary drain B. Conditioned supply air will escape through the condensate drainpipe C. Ice will accumulate on the evaporator coil D. Stress on the connection fitting at the evaporator will cause the pipe to cracks A. Condensate water will not drain properly and will back up above the primary drain Which of the following issues affects the decision to use a running trap on a condensate line at the evaporator coil? A. Running traps are better at draining condensate water then p-traps B. Running traps are easier to clean then other types of condensate traps. C. Running traps do not allow for the proper drainage of condensate water. D. Running traps stop air from being drawn into the air handler in a draw-through application C. Running traps do not allow for the proper drainage of condensate water. The auxiliary drain line from an overflow pan must ______. A. be connected to the primary condensate drain line using an approved p-trap B. be terminated at some conspicuous location so that an overflow is readily notice C. have a diameter of at least 1in. D. Never be insulated. B. be terminated at some conspicuous location so that an overflow is readily notice. Which of the following statements about a packaged unit installation is true? A. packaged heat pumps are intended for rooftop installations only. B. Packaged heat pumps are more difficult to install then split system. C. Packaged heat pumps are not available for use in commercial application D. The pad used to support a packaged heat pump should not make contact with the building. D. The pad used to support a packaged heat pump should not make contact with the building Which of the following brazing materials is acceptable for use on refrigerant piping? A. 50/50 soft solder with an approved flux B. 95/5 Soft solder with an approved liquid flux C. 95/5 Soft solder with an approved paste flux D. Brazing alloy with an approved flux D. Brazing alloy with an approved flux