A field technician installed two side-air-discharge condensing units next to each other so that the discharge air of unit "A" feeds into condensing unit "B." What is likely to happen?
What will be an ideal response?
System "A" will work fine, but system "B" will most likely run with extremely high head pressures and probably cut off on safety when the outside ambient temperature is high. (Many service calls are likely to be made to the house with system "B.")
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Briefly describe how pneumatic timers operate.
What will be an ideal response?
A(n) ____ occurs when it is possible for one contact to open before another closes or for one contact to close before another opens.
A. bypass B. contact race C. off-delay D. on-delay
List the three major steps in drawing an object with accurate proportions.
What will be an ideal response?
Because ____________________ proximity detectors do not depend on metal to operate, they will sense virtually any material such as wood, glass, concrete, plastic, and sheet rock.
Fill in the blank(s) with the appropriate word(s).