Wall Control; Location; Basic Control Operation; Standard Control Operation - Bryant HRVBBLHU Installation, Start-Up, And Operating Instructions Manual

WALL CONTROL

I. LOCATION
The HRV wall controls are unique to HRV and must be installed
for proper unit operation.
Three wall control options are available:
1. Basic Control
2. Standard Control
3. Automatic Control
II. BASIC CONTROL OPERATION
The basic control contains a 3 position slide switch which is used
to manually select OFF, LOW, and HIGH speed blower operation.
The unit operates continuously when LOW or HIGH is selected
(See Table 1).
III. STANDARD CONTROL OPERATION
The standard control contains an adjustable dehumidistat, and a 3
position slide switch which is used to manually select between
OFF, LOW, and INTERMITTENT modes. There are 2 LEDs on
the control to indicate operating mode (See Table 2). This control
offers 2 modes of operation:
1. With switch off, HRV is inoperative and both LEDs are out
(See Fig. 14).
2. With switch on LOW, HRV continuously exchanges air
with outside. If dehumidistat is satisfied, blower will run in
low speed, otherwise, blower will run on high speed. Both
LEDs are illuminated all the time.
3. With switch on INTERMITTENT, the HRV exchanges air
with outside on high-speed blower, and unit shuts down
when dehumidistat is satisfied. The ON LED is illuminated
all the time, and AIR EXCHANGE LED is illuminated only
when unit is running. This mode is ideal for maintaining
proper humidity levels when no one is home.
IV. AUTOMATIC CONTROL OPERATION
This control contains an adjustable dehumidistat and push button
switch to cycle between 3 modes of operation. There are 5 LEDs
to indicate mode of operation (See Table 3).
NOTE: This control is designed to be used primarily with
installations which are independent of a forced air system (models
HRVBBSVU and HRVBBLVU only).
1. Initially the switch is off. All LEDs are off and HRV is
inoperative.
2. First push of mode button puts HRV into intermittent mode.
The HRV operates at high speed when there is a call for
dehumidification. Intermittent and exchange LEDs are illu-
minated. When dehumidistat is satisfied, HRV shuts down
and exchange LED goes out.
3. Next push of mode button puts system in continuous mode.
Continuous and exchange LEDs remain on. The HRV
operates at high-speed blower during calls for dehumidifi-
cation and low speed when dehumidistat is satisfied.
MODE
Off
Low
High
TABLE 1—BASIC CONTROL
OPERATION
Off
Air exchange
with outside
Air exchange
with outside
—6—
4. Next push of mode button puts system in circulation mode.
HRV operates in high speed at all times. Circulation LED
remains on. When there is a call for dehumidification,
exchange LED is on and HRV exchanges air with outside.
When dehumidistat is satisfied, HRV dampers close which
recirculates indoor air. The exchange LED goes off.
5. The maintenance light illuminates every 3 months to
indicate filter should be cleaned. It is reset by opening the
door to the HRV.
NOTE: The standard and automatic controls sense humidity not
temperature. Either control must be located in an area where it will
continually monitor fresh air circulating within the home. Install
HRV wall control as close as possible to main system thermostat
and follow same guidelines as installing a thermostat, (locate
approximately 5 ft. [60 in.] above floor, mount on an inside
partitioning wall, etc).
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NOTE: The HRV may be controlled using the Evolution system
control. The HRV may be connected using either a NIM or a
4-Zone Damper Module. See the appropriate instructions if using
the NIM of a 4-Zone Damper Module for connection instructions.
Blower interlock relay is not needed for use with the Evolution
system control. The Evolution system control will simultaneously
control the HRV and the indoor blower.
Push Button Timers may be used and are connected to the HRV as
shown in Figure 11. However, the Evolution system should be set
to continuous fan to ensure that the fresh air is circulated in the
home. In a Zoned System, at least one zone should be set to
continuous fan.
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OPERATING HRV WITH EVOLUTION CONTROL
The ventilator has four settings in heating mode and three settings
in cooling mode.
Heating:
AUTO - the ventilator selects the speed based on indoor
humidity and outdoor temperature. It may cycle on/off every
30 minutes depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
DEHUM - will only turn on if humidity is 3% over set point.
The speed is determined by indoor humidity and outdoor
temperature.
Cooling:
AUTO - the ventilator selects the speed based on indoor
humidity and outdoor temperature. It may cycle on/off every
30 minutes depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
If the fan speed is set to Auto and the ventilator wants to run, the
fan speed will run at High continuous speed. Otherwise, the fan
will stay at the chosen continuous fan speed.
DAMPER POSITION
Closed to outside
Open to outside
Open to outside
FAN SPEED
Off
Low
High