What should be done when checking the refrigerant charge of an operating packaged unit?
a. Allow time for the operation of the unit to stabilize.
b. Put the unit in economizer mode.
c. Open all outdoor air dampers and close the return air dampers.
d. Remove the supply air fan access panel.
a. Allow time for the operation of the unit to stabilize.
You might also like to view...
A selector switch is used to break the connection to the holding contacts.
Answer the following statement true (T) or false (F)
?When observing a Hall effect sensor on a lab scope; Technician A says pay attention to the downward and upward pulses; they should be at an angle. Technician B says if they appear straight this indicates the transistor is faulty, causing the voltage to rise slowly. Who is correct?
A. ?A only B. ?B only C. ?Both A and B D. ?Neither A nor B
What term best describes a liquid with a flash point below 140°F?
A) Toxic B) Corrosive C) Radioactive D) Ignitable
According to the author, after a few hours in the Merry Lea property, you start to notice some thoughtful planning has gone into this work
Indicate whether the statement is true or false