Specifications
RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
Installation and operation manual
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For the following conditions, a micro computer controls the air flow
direction which may be different from the display.
The air flow direction can be adjusted in one of the following ways:
The air flow flap itself adjusts its position.
The air flow direction can be fixed by the user.
Automatic and desired position .
6.4. Setting the master user interface
1 VRV heat pump outdoor unit
2 VRV direct expansion (DX) indoor unit
3 User interface (dedicated depending on indoor unit type)
When the system is installed as shown in the figure above, it is
necessary to designate one of the user interfaces as the master user
interface.
The displays of slave user interfaces show (change-over
under centralized control) and slave user interfaces automatically
follow the operation mode directed by the master user interface.
Only the master user interface can select heating or cooling mode.
6.4.1. How to designate the master user interface
1 Press the operation mode selector button of the current master
user interface for 4 seconds. In case this procedure was not yet
performed, the procedure can be executed on the first user
interface operated.
The display showing (change-over under centralized
control) of all slave user interfaces connected to the same
outdoor unit flashes.
2 Press the operation mode selector button of the controller that
you wish to designate as the master user interface. Then
designation is completed. This user interface is designated as
the master user interface and the display showing
(change-over under centralized control) vanishes. The displays
of other user interfaces show (change-over under
centralized control).
6.5. Precautions for group control system or two user
interface control system
This system provides two other control systems beside individual
control system (one user interface controls one indoor unit). Confirm
the following if your unit is of the following control system type:
Group control system
One user interface controls up to 16 indoor units. All indoor units
are equally set.
Two user interface control system
Two user interfaces control one indoor unit (in case of group
control system, one group of indoor units). The unit is
individually operated.
7. Energy saving and optimum operation
Observe the following precautions to ensure the system operates
properly.
Adjust the air outlet properly and avoid direct air flow to room
inhabitants.
Adjust the room temperature properly for a comfortable
environment. Avoid excessive heating or cooling.
Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
Ventilate often.
Extended use requires special attention to ventilation.
Keep doors and windows closed. If the doors and windows
remain open, air will flow out of your room causing a decrease in
the cooling or heating effect.
Be careful not to cool or heat too much. To save energy, keep
the temperature setting at a moderate level.
Never place objects near the air inlet or the air outlet of the unit.
It may cause deterioration in the effect or stop the operation.
Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it
consumes electricity.
Before restarting the unit, turn on the main power supply switch
6 hours before operation to ensure smooth running. (Refer to
"Maintenance" in the indoor unit manual.)
When the display shows (time to clean the air filter), ask a
qualified service person to clean the filters. (Refer to
"Maintenance" in the indoor unit manual.)
Keep the indoor unit and user interface at least 1 m away from
televisions, radios, stereos, and other similar equipment. Failing
to do so may cause static or distorted pictures.
Do not place items under the indoor unit, they may be damaged
by water.
Condensation may form if the humidity is above 80% or if the
drain outlet gets blocked.
Your system is equipped with advanced energy saving functionality.
Depending on the priority emphasises can be put on energy saving or
comfort level. Several parameters can be selected, resulting in the
optimal balance between energy consumption and comfort for your
particular application.
Several patterns are available and roughly explained below. Contact
your installer or dealer for advice or to modify the parameters to the
needs of your building.
Detailed information is given for the installer in the installation
manual. He can help you to realize the best balance between energy
consumption and comfort.
COOLING HEATING
• When the room temperature is
lower than the set temperature.
• When starting operation.
• When the room temperature is
higher than the set temperature.
• At defrost operation.
• When operating continuously at horizontal air flow direction.
• When continuous operation with downward air flow is performed at the
time of cooling with a ceiling-suspended or a wall-mounted unit, the micro
computer may control the flow direction, and then the user interface
indication will also change.
NOTICE
The movable limit of the flap is changeable. Contact
your dealer for details. (only for double-flow, multiflow,
corner, ceiling-suspended and wall-mounted).
Avoid operating in the horizontal direction . It
may cause dew or dust to settle on the ceiling or flap.
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NOTICE
Contact your dealer in case of changing the combination or
setting of group control and two user interface control
systems.