Author Question: Why is it possible to use smaller vent pipes in higher-efficiency units? A) The temperature of ... (Read 96 times)

renzo156 · **on:** Jul 24, 2018

Why is it possible to use smaller vent pipes in higher-efficiency units?

A) The temperature of the flue gases is higher.
B) Condensation pushes the gas through the pipes.
C) Volume and temperature of flue gases are lower.
D) The volume of the flue gases is greater.

Question 2

A crucial requirement whenever a rooftop installation is considered is:

A) That rooftop units can only be installed on flat roofs.
B) To ensure that the roof structure can support the weight of the equipment.
C) That a power drop can be made directly from the utility pole to the unit.
D) To ensure that the unit cannot be seen from the front of the building.