Standard Control Operation - Carrier HRVCCLHU Installation, Start-Up, And Operating Instructions Manual

WALL CONTROL
Step 1---Location
The HRV wall controls are unique to HRV and must be installed
for proper unit operation.
Three wall control options are available:
I. Basic Control
2. Standard Control
3. Automatic Control
Step 2IBasic Control Operation
The b_sic 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.
tSee Table 1.)
Step 3iStandard 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 INTERMFIq_NT modes. There are 2 LEDs on
the control to indicate operating mode. (See Table 2.) This control
offers 2 modes of operation:
I. 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 INTERMIq'I'ENT, 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.
Step 4_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
HRVCCSVU and HRVCCLVU 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 illumi-
nated. 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 oper-
ates at high-speed blower during calls for dehumidification
and low speed when dehumidistat is satisfied.
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, ete).
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