Bryant HRVBBLHU Control Features, Control Description And Usage, Automatic Defrost Cycle Features

CONTROL FEATURES

Basic Control: Allows the user to manually set fan speed to low or high as required to maximize comfort.

Standard Control: Offers automatic dehumidistat control and the option to select continuous or intermittent fan operation. Setting the wall control to low will activate the continuous mode.

Automatic Control: In addition to the features found with standard control, this package offers a recirculation mode. These controls may only be used to operate stand-alone units with the defrost option which enables the recirculation feature.

	FAN
CONTROL	SPEED	DEHUMIDISTAT	CONTINUOUS	INTERMITTENT	CIRCULATION
DESCRIPTION	CONTROL	CONTROL	MODE*	MODE*	MODE†
Basic	Yes	No	Yes	No	No
Standard	Yes	Yes	Yes	Yes	No
Automatic‡	Yes	Yes	Yes	Yes	Yes

* Air exchange with outside.

†No air exchange with outside.

‡ Use only on units with defrost.

CONTROL DESCRIPTION AND USAGE

Fan Speed Control — Enables user to modulate fan speed from low to high air exchange with outside. Dehumidistat Control — Allows the user to select the relative humidity level at which the unit would change fan speed for dehumidification in the winter months.

Continuous Mode — If the relative humidity inside the building is lower than selected, air exchange occurs with the outside at low speed. If the relative humidity inside the house is higher than selected, air exchange occurs with the outside at high speed. Ensures continuous air exchange for constant air quality.

Intermittent Mode — If the relative humidity inside the building is lower than selected, no air exchange occurs and the system turns off. If the relative humidity inside the house is higher than selected, air exchange occurs with the outside at high speed. Ensures minimum air exchange level when the building is unoccupied to minimize operating costs.

Circulation Mode — If the relative humidity inside the building is lower than selected, the ambient air would be circulated and filtered at high speed. If the relative humidity inside the house is higher than selected, air exchange would occur with the outside at high speed. Ensures continuous movement and filtration of air for maximum comfort. Available with automatic control only.

AUTOMATIC DEFROST CYCLE FEATURES

All models offer a non-electric defrost cycle feature which prevents frost and ice buildup within the heat recovery core. When the outside air temperature falls below 23°F (–5°C) it is electronically sensed and the dampers close the outside air ports. This allows warm indoor air to recirculate within the heat recovery core. The frequency of this cycle increases as the outside air temperature decreases.

	23°F TO 55°F (–5°C TO –15°C)		4°F TO –17°F (–15.6°C TO –27.3°C)		BELOW –18°F (–27.8°C)
MODEL	DEFROST*	EXCHANGE†	DEFROST*	EXCHANGE†	DEFROST*	EXCHANGE†
HRVBBLHU	6 Minutes	60 Minutes	6 Minutes	32 Minutes	6 Minutes	20 Minutes
HRVBBSVU	6 Minutes	60 Minutes	6 Minutes	32 Minutes	6 Minutes	20 Minutes
HRVBBLVU	6 Minutes	60 Minutes	6 Minutes	32 Minutes	6 Minutes	20 Minutes

* All defrost times are in the standard mode (as shipped)

† Time between defrost when within specified temperature range

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