Installation clearances for rooftop units are required
A) to insure that the weight of the unit does not rest directly on any roof trusses, beams, joists, or rafters
B) to maintain a safe distance between the wiring and combustible materials
C) to isolate the equipment from materials that might be damaged by refrigerant leaks
D) to insure the correct airflow through the condenser coil
D
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Bevels and V-grooves are best if they are cut after the parts are assembled.
Answer the following statement true (T) or false (F)
In the CAC-A process, the _____ blows the molten metal away.?
A. plasma column? B. surface metal? C. air stream? D. old weld?
What is a draft pressure switch?
A) A switch that senses when the vent is in a draft condition B) A switch that senses when the burners ignite C) A switch that senses when a vent pipe is connected to the flue outlet D) A switch that senses when a building has air leaks
Technician A says that the DLC on an OBD II vehicle has 18 pins. Technician B says that the pin assignment for the DLC on an OBD II vehicle has not changed since 1996. Who is correct?
A. A only B. B only C. both A and B D. neither A nor B