An air-handling unit condensate pan drains into a line that rises before reaching the floor sink. Water remains in the pan during startup. What should be corrected?
Correct Answer
C) Repipe condensate drainage with proper trap and continuous slope to the approved receptor
Condensate systems need proper trapping and slope so water drains by gravity without backing up into the unit. Other choices address unrelated systems or damage the pan.
Why This Is the Correct Answer
Condensate systems need proper trapping and slope so water drains by gravity without backing up into the unit. Other choices address unrelated systems or damage the pan.
Why the Other Options Are Wrong
Option A: Select add more refrigerant for condensate drainage, leaving condensate drainage unverified
Choice A (Add more refrigerant) is rejected because it points to Add more refrigerant, but.
Option B: The MEP foreman should increase fan speed to blow water out
In mechanical and plumbing, Increase fan speed to blow water out is the wrong selection for Condensate drainage: it answers the Condensate drainage prompt with the wrong practical move.
Option D: The MEP foreman should drill a hole in the pan
Choice D gives Drill a hole in the pan. Its specific error: the choice would not get the project to Repipe condensate drainage with proper trap and continuous slope to the approved receptor, which is the Condensate drainage result verified by the source.
Memory Technique
Remember condensate drainage by its jobsite consequence: the correct move points to Repipe condensate drainage with proper trap and continuous slope to the approved receptor.
Reference Hint
Open Mechanical and Electrical Systems for Construction Managers, 4th Ed., 2024; use the index entry or section for "Condensate drain installation" to confirm that Condensate systems need proper trapping and slope so water drains by gravity without backing up into the unit.
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