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HVAC
NATE Low-GWP Refrigerant Certification
Handling Procedures
Knowledge Check
Handling Procedures
Knowledge Check
Knowledge Check
1 / 10
When setting up ventilation to handle A2L refrigerants in an enclosed mechanical room, where should the exhaust fan be positioned?
A
Near the ceiling, since hot air rises and carries refrigerant up
B
At mid-wall height, pointing horizontally across the work area
C
At floor level, because A2L vapors are heavier than air and collect at the floor
D
Anywhere convenient - refrigerant concentration is uniform throughout the room
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