Related illustrations

0776

Typical supply and return register locations

· p. 127

The cross-sectional diagram shows a forced-air furnace below two rooms, with supply ducts delivering heated air to registers at the exterior edges of the rooms. Return grilles near the central interior wall connect to a

0794

Supply and return registers poorly located

· p. 131

The illustration shows a room with a floor-mounted heat register beside an interior wall and doorway, and a floor-mounted return air grille beside the exterior wall below a window. Arrows identify the interior side of th

0792

High and low returns

· p. 130

Two room cross sections illustrate seasonal operation of high and low returns in a forced-air distribution system. Both show a floor supply register beneath a window and a return duct on the opposite wall with upper and

1255

High and low returns

· p. 223

Two room cross sections illustrate seasonal operation of high and low return-air openings connected to a common return duct. In summer cooling mode, the lower return register is closed, and warm room air enters the upper

1254

Flow of cooled air - modern ductwork

· p. 222

A cross section of a two-story house with a basement shows cooled-air circulation through a forced-air duct system. A basement furnace and A/C unit feeds supply ducts serving registers near the exterior wall on both stor

1253

Flow of cooled air - older-style ductwork

· p. 222

A house cross section shows a basement furnace and air-conditioning unit connected to supply and return ductwork. Supply ducts feed floor-level registers on the lower and upper occupied levels, while a single return gril

0777

Distribution system components for forced air heating

· p. 127

A cross-sectional schematic shows a forced-air furnace below a room, connected to return and supply ductwork. The return grille connects to ducts leading down to air filters and a motor-driven blower. The blower moves ai

1282

Flow of cooled air - older-style ductwork

· p. 229

A house cross section shows a basement furnace and air-conditioning unit connected to supply registers on two occupied levels and a single lower-level return grille. Supply ducts run beneath the lower floor and rise alon