Operation Manual
SiBE12-908
78
Installation / Operation Manual
13
NOTE
Notes on “HUMID HEA
T operation” at multi system
• When the indoor units in both 2 rooms are set to HUMID HEAT operation/FRESH AIR SUPPLY VENTILATION, the indoor unit in either
1 of the room operate HUMID HEAT operation/FRESH AIR SUPPLY VENTILATION.
(The indoor units in both 2 rooms do not simultaneously go into HUMID HEAT operation/FRESH AIR SUPPLY VENTILATION.)
Priority is given to the indoor unit in either one of the rooms already in operation. When the humidity of the room to which priority is given
reaches a target level, the humidification of the room will stop and the humidification of the other room will start automatically. (page 26.)
Refer to the following application examples
Example 1
: The indoor units in both 2 rooms are in HUMID HEAT operation.
Example 2
: The indoor units in the rooms are in HUMID HEAT operation and FRESH AIR SUPPLY VENTILATION,
respectively.
First selected priority
Initial state of operation
Automatic switchover between 2 rooms
HUMID
HEAT
HUMID
HEAT
Room B
Room A
RED
ORANGE
HEAT
HEAT
HUMID
HEAT
HUMID
HEAT
Room B
Room A
HEAT
HEAT
HUMID
HEAT
HUMID
HEAT
Room B
Room A
HEAT
HEAT
• The unit in Room B in HEAT operation
will be changed into HUMID HEAT
operation while the unit in Room A is in
HUMID HEAT operation.
The result is shown in the illustration on
the right.
• The unit in first selected priority
operation in Room A will take
precedence, and the unit in Room B will
go into a standby state. (Yellow) When
the humidity of Room A satisfies the
preset condition, HUMID HEAT
operation in Room A will be switched to
the unit in Room B automatically.
The result is shown in the illustration on
the right.
• The humidification of Room A is finished,
and the unit in a standby state in Room
B will go into HUMID HEAT operation.
When the humidity of Room A drops, the
unit in Room A will be switched HUMID
HEAT operation and the unit in Room B
will be switched HEAT operation
automatically. (Because the unit in Room
A is first selected priority.)
The result is shown in the illustration on
the left.
First selected priority
Initial state of operation
HUMID
HEAT
HUMID
HEAT
Room B
Room A
HEAT
HEAT
HUMID
HEAT
HUMID
HEAT
Room B
Room A
HEAT
HEAT
HEA
HEAT/
T/
SUPPL
SUPPLY VENTILA
VENTILATION
TION
HEAT/
SUPPLY VENTILATION
Room B
Room A
• The unit in Room B in HEAT operation
will be added ventilation while the unit in
Room A is in HUMID HEAT operation.
The result is shown in the illustration on
the right.
• The unit in first selected priority operation
in Room A will take precedence.
The unit in Room B keeps HEAT operation and
will go into a standby state for ventilation. (Yellow)
In case you will start ventilation the unit
in Room B, the HUMID HEAT operation
of Room A have to be stopped.
The result is shown in the illustration on the right.
• The unit in Room B is in HEAT operation
besides ventilation.
• While the unit in Room A is in
“CONT” HUMID HEAT operation, the
unit in Room B will not go into
HUMID HEAT operation automatically
as right example. (The multi-monitor
lamp is yellow in a standby state.)
ORANGE
YELLOW
ORANGE
ORANGE
RED
ORANGE
YELLOW
ORANGE
Not appear
RED
