Filter
Top Products
—4—
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.
* 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.
* All defrost times are in the standard mode (as shipped)
† Time between defrost when within specified temperature range
CONTROL
DESCRIPTION
FAN
SPEED
CONTROL
DEHUMIDISTAT
CONTROL
CONTINUOUS
MODE*
INTERMITTENT
MODE*
CIRCULATION
MODE†
Basic
Yes No Yes No No
Standard
Yes Yes Yes Yes No
Automatic‡
Ye s Ye s Ye s Ye s Ye s
MODEL
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)
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