Related illustrations

1354

HRV (heat recovery ventilator) components

· p. 243

The schematic shows a heat recovery ventilator connected through an exterior wall to fresh-air intake and exhaust ducts, with two additional ducts serving the house. Arrows show cool fresh air passing through the heat ex

1401

Flow collars and balancing dampers

· p. 255

The illustration shows a heat recovery ventilator (HRV) connected to outdoor intake and exhaust ducts and two house-side air ducts. Arrows trace cool fresh air and warm moist house exhaust through a heat exchanger, with

1353

HRV and ERV heat exchangers

· p. 243

The illustration shows a ducted heat recovery ventilator with two blowers and a heat exchanger transferring heat from warm house exhaust air to incoming cool fresh air. Color-coded arrows distinguish cool supply air, war

1404

HRV core missing or dirty

· p. 256

The illustration shows a heat recovery ventilator connected by two ducts to exterior wall terminations, with two blowers and a condensate drain. A dashed diamond inside the cabinet marks the missing HRV core, and an arro

1397

Cold-side ducts not insulated

· p. 255

The illustration shows a heat recovery ventilator (HRV) with a heat exchanger, two blowers, controls, and a condensate drain in an interior space. Two cold-side ducts connect the unit to exterior fresh-air intake and exh

1352

Heat recovery ventilators (basic components)

· p. 243

A schematic house contains a heat recovery ventilator connected to outdoor and indoor air ducts. Arrows show cold, dry outside air entering the unit and being delivered indoors as warmed, dry air, while stale, humid hous

0850

Heat exchangers

· p. 143

The illustration shows a schematic cross section of a hot-water boiler with a side-mounted burner firing into the lower combustion chamber. Cool water is pumped into the bottom of a serpentine, finned heat exchanger, and