Control Features - Carrier HRVXXSVU Product Data

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.
CONTROL FAN SPEED
DESCRIPTION CONTROL
Basic
Standard
Automatic]
* Air exchange with outside.
† No air exchange with outside.
‡ Use only on units with defrost.
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.
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)
MODEL
DEFROST*
HRVXXSVU 6 Minutes
HRVCCLVU 6 Minutes
* All defrost times are in the standard mode (as shipped)
† Time between defrost when within specified temperature range
The tables below should be used to determine the required airflow for a home. These guidelines are taken from ASHRAE 62.2- -2007.
Ventilation Air Requirements, cfm
FLOOR
2
AREA (ft )
0---1 2---3
<1500 30 45
1501--- 3000 45 60
3001--- 4500 60 75
4501--- 6000 75 90
6001--- 7500 90 105
>7500 105 120

CONTROL FEATURES

DEHUMIDISTAT
CONTROL
Yes No
Yes Yes
Yes Yes
CONTROL DESCRIPTION AND USAGE
AUTOMATIC DEFROST CYCLE FEATURES
EXCHANGE[
60 Minutes
60 Minutes
VENTILATOR SIZING
BEDROOMS
4---5 6---7 >7
60 75 90
75 90 105
90 105 120
105 120 135
120 135 150
135 150 165
CONTINUOUS
MODE*
Yes
Yes
Yes
4°F TO –17°F (–15.6°C TO –27.3°C)
DEFROST* EXCHANGE[
6 Minutes 32 Minutes
6 Minutes 32 Minutes
Ventilation Air Requirements, L/s
FLOOR
2
AREA (m )
0---1
<139 14
139.1--- 279 21
279.1--- 418 28
418.1--- 557 35
557.1--- 697 42
>697 50
6
INTERMITTENT CIRCULATION
MODE* MODE[
No
Yes
Yes
BELOW –18°F (–27.8°C)
DEFROST* EXCHANGE[
6 Minutes 20 Minutes
6 Minutes 20 Minutes
BEDROOMS
2---3 4---5 6---7
21 28 35
28 35 42
35 42 50
42 50 57
50 57 64
57 64 71
No
No
Yes
>7
42
50
57
64
71
78