InstallationCâu 43 / 110
A furnace installed in an upflow configuration discharges heated air in which direction?
a.Downward through the bottom
b.Upward through the top of the cabinet
c.Horizontally to the side
d.Directly outdoors
Giải thích
An upflow furnace pulls return air in at the bottom and discharges heated supply air out the top, typical for basement or closet installations with overhead ductwork. Downflow and horizontal furnaces are oriented for other duct arrangements. The airflow direction must match the duct layout.
Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
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