Bryant HEAT RECOVERY VENTILATOR HRVBB Troubleshooting Guide download pdf (Page 11)

FIGURE 1

Components of a ventilation system using an HRV

During the heating season, an HRV recovers heat from the

outgoing, stale household air and uses it to preheat incoming, fresh

outdoor air. The HRV then distributes the incoming air throughout

the house.

In the example shown in Figure 1, the ﬂow of air in and out of the

house takes place simultaneously (note: the path of the airﬂow may

vary from one HRV to another). The two air streams are always

kept separate within the HRV. Fresh outdoor air is ﬁltered before

it enters the HRV core, where a circulation fan distributes the air

throughout the house via ductwork. A separate ductwork system

draws the stale indoor air back to the HRV, where it is ﬁltered and

pushed by a fan through the heat-exchange core. Here, the stale

air releases heat that is transferred to the fresh air being drawn into

the house.

During the cooling season, the HRV reverses this heat-exchange

process, removing some of the heat from the incoming air and

transferring it to the outgoing air (see the text box called “Energy

recovery ventilators”).

Controls

INTERIOR

OF THE

HOME

OUTDOORS

Exhaust

air outlet

Hood

Fresh air

intake

Screen

Insulated duct

Stale air

from

house

Fresh air

house

Circulation

fan

Casing

Filter

Circulation

fan

Heat–

exchange

core

Condensate

to drain

Trap filled

with water

Screen

(Note: Your HRV may not have all the parts shown here.)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 35 36

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Bryant HEAT RECOVERY VENTILATOR HRVBB Troubleshooting Guide Page 11

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