What type of blower configuration requires a water-filled P-trap to ensure proper condensate draining?
A) Push-through evaporator with blower upstream
B) Draw-through evaporator with blower downstream
C) No P-trap is needed on rooftop installations.
D) Blower configuration does not affect drainage.
[Ques. 2] The gas line should include:
A) A stop valve. B) A gas filter and a drip leg.
C) A flexible connector and a stop valve. D) A stop valve and a drip leg.
[Ques. 3] Proper height above the roof is important when installing a heat pump rooftop unit:
A) So that snow does not block airflow through the outdoor coil.
B) So that the unit can be serviced from underneath.
C) To ensure adequate combustion air to the burners.
D) To allow the condenser to take advantage of local prevailing wind.
[Ques. 4] The electrical disconnect can be mounted to the rooftop unit, provided that:
A) It can easily be removed for service. B) It does not block access to any service panels.
C) It is mounted inside the unit. D) It is a general-duty box.
[Ques. 5] To avoid cutting extra holes in the roof, power is normally provided to curb-mounted rooftop units:
A) Wirelessly using Wireless Power Connectors (WPC).
B) Directly from the power company's utility pole.
C) Through the same conduit as the low-voltage control wiring.
D) From underneath through the curb.
Quick Reply
