List at least three requirements when installing an evaporator coil in a walk-in cooler or freezer
What will be an ideal response?
1) The air pattern of the evaporator must envelop the entire room. 2) Never install an evaporator above a door. 3) Do not install an evaporator coil in an area where it will interfere with the cooler's aisles or storage racks. 4)
The evaporator should be installed in a location that will provide the shortest possible distance between it and the condensing unit. 5) The location of the condensate drains should provide for minimum pipe length.
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When block work is gradually adjusted so that a difference in height is not evident, it is said to be _____ .
A. leveled B. differentiated C. humored D. parged
____________________ are forces that oppose each other.
Fill in the blank(s) with the appropriate word(s).
Girdling roots:
A) can always be corrected by redirecting the root tips. B) are only a problem when the water supply is limited. C) should be avoided when buying trees and shrubs. D) are good because they form grafts with the stem and provide more nutrients and water.
Technician A says that the HVAC doors in an automatic system may be vacuum operated. Technician B says that the HVAC doors in an automatic system may be operated by electric servos. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician