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31 Display "FRESH UP"
This displays the status of two fans. Refer to "OPERA-
TION PROCEDURE"
NOTE
• In contradistinction to actual operating situations, the display
on figure 3 shows all possible indications.
• If the filter sign lamp lights up, clean the air filter as
explained in the chapter "MAINTENANCE". After cleaning
and reinstalling the air filter: press the filter sign reset button
on the remote controller. The filter sign lamp on the display
will go out.
2-3
Explanation for SYSTEMS
This unit can be made a part of two different systems: as
part of the combined operation system used together with
VRVII SYSTEM Air Conditioners or Sky-air series and as
the independent system using only the HRV. An operating
remote controller is required when using the unit as an
independent system.
Ask your dealer what kind of system your system is set up
for before operation.
For the operation of the remote controller for indoor unit
and centralized controller, refer to the instruction manual
provided with each unit.
See the included operating manuals for details on how to
operate each remote control.
OPERATION for EACH SYSTEM
Sample system (Refer to figure 2)
Independent system
[Operation]
The HRV unit can be started and stopped using the remote
controller.
You can also select the ventilation amount and the ventilation
mode.
Sample system (Refer to figure 2)
Combined operation system with VRV systems and Sky-
air series
[Operation]
The air conditioner remote controller starts and stops the air
conditioner and the HRV unit.
You can also select the ventilation amount and the ventilation
mode.
During intermediate periods when only the HRV unit is used
without the air conditioner, select "ventilation" with the opera-
tion selection button.
[Operation method]
The ON/OFF and timer operation can be performed using the
HRV remote controllers.
(The indication of centralized control "
on the display.)
Other operations can be performed using the HRV remote con-
trollers.
Starting and stopping operations of the indoor unit and the
HRV unit can be performed using the indoor remote controllers.
(Refer to the section 3-2)
Centralized system
[Operation method]
When the HRV remote controllers is not connected, the Cen-
tralized controller controls the operation of the HRV unit.
(Refer to the section 3-3)
When the HRV remote controllers is connected, operation can
be started and stopped using the Cetralized controller or the
indoor and the HRV remote controllers.
During the indication of centralized control "
appears on the display, the ON/OFF and timer operation may
not be possible with the HRV remote controllers.
Other operations can be performed using the HRV remote con-
trollers. (Refer to the section 3-2, 3-3)
English
3.
OPERATION PROCEDURE
3-1
INDEPENDENT, COMBINED OPERATION
(Refer to figure 4)
For non-independent systems, starting/stopping operation
and timer operation may not be possible.
Use the air conditioner remote control or the Centralized
controller in such cases.
Press the on/off button. Operation lamp lights up and the
1
system will start operation.
Press ventilation mode button if you wish to change the
2
mode.
The display rotates through the following selections
every time the button is pressed.
Automatic mode
Press ventilation fan speed button if you wish to change
3
the fan speed.
The display rotates through the following selections
every time the button is pressed.
<In case of the remote controller "BRC301B61">
Low
The display doesn't disapper.
<In case of the remote controller "BRC1C61, BRC1A61,
BRC1A62">
Low
After the selection, the ventilation fan speed display dis-
appears.
And the fan speed of the combined air conditioner regu-
lary displays.
Stopping the system
Press start/stop one more time. The operation lamp will go off.
The unit will stop.
• After stopping operation, the fan may continue operating for
up to a minute.
• The fan may stop, but this is not a malfunction.
NOTE
• Do not change operations sunddenly.
" appears
It can result not only in malfunction but also failure of
switches or relays in the remote controller.
• Never press the button of the remote controller with a
hard, pointed object.
The remote controller may be damaged.
EXPLANATION OF FRESH UP
• If it is set to "Fresh up air supply" : The volume of outdoor air
supplied into the room is larger than that of room air
exhausted outdoors. (This operation prevents the odor and
moisture from kitchens and toilets from flowing into the
rooms.)
• If it is set to "Fresh up air exhaust" :The volume of room air
exhausted outdoors is larger than that of outdoor air sup-
plied into the room. (This operation prevents the hospital
odor and floating bacteria from flowing out to the corridors.)
"
NOTE
• This does not be changed with the button of the remote con-
troller BRC1C61. Ask your dealer for the set up of FRESH
UP.
Heat exchange mode
High
Low
L
H
Fresh up
L
FRESH UP
High
L
H
Bypass mode
High
Fresh up
H
FRESH UP
4
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