Daikin RXYQQ16U7Y1B handleiding

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Handleiding

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4 About the system
Installation and operation manual
9
RXYQQ8~20U7Y1B
VRV IV Q+ series heat pump
4P546221-1B – 2020.10
4 About the system
The indoor unit part of VRV IV replacement heat pump system can
be used for heating/cooling applications. The type of indoor unit
which can be used depends on the outdoor units series.
NOTICE
Do NOT use the system for other purposes. In order to
avoid any quality deterioration, do NOT use the unit for
cooling precision instruments, food, plants, animals, or
works of art.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
4.1 System layout
a
e
c
d d
c
b
a VRV IV replacement heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d User interface (dedicated depending on indoor unit type)
e Cool/Heat changeover remote control switch
5 User interface
CAUTION
NEVER touch the internal parts of the controller.
Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
This operation manual offers a non-exhaustive overview of the main
functions of the system.
Detailed information on required actions to achieve certain functions
can be found in the dedicated installation and operation manual of
the indoor unit.
Refer to the operation manual of the installed user interface.
6 Operation
6.1 Operation range
Use the system in the following temperature and humidity ranges for
safe and effective operation.
Cooling Heating
Outdoor temperature –5~43°CDB –20~21°CDB
–20~15.5°C WB
Indoor temperature 21~32°CDB
14~25°C WB
15~27°CDB
Cooling Heating
Indoor humidity ≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If the
temperature or the humidity is beyond these conditions, safety
devices may be put in action and the air conditioner may not
operate.
Above operation range is only valid in case direct expansion indoor
units are connected to the VRV IV system.
6.2 Operating the system
6.2.1 About operating the system
Operation procedure varies according to the combination of
outdoor unit and user interface.
To protect the unit, turn on the main power switch 6 hours before
operation.
If the main power supply is turned off during operation, operation
will restart automatically after the power turns back on again.
6.2.2 About cooling, heating, fan only, and
automatic operation
Changeover cannot be made with a user interface whose display
shows "change-over under centralised control" (refer to
installation and operation manual of the user interface).
When the display "change-over under centralised control"
flashes, refer to "About setting the master user interface"[411].
The fan may keep on running for about 1 minute after the heating
operation stops.
The air flow rate may adjust itself depending on the room
temperature or the fan may stop immediately. This is not a
malfunction.
6.2.3 About the heating operation
It may take longer to reach the set temperature for general heating
operation than for cooling operation.
The following operation is performed in order to prevent the heating
capacity from dropping or cold air from blowing.
Defrost operation
In heating operation, freezing of the outdoor unit's air cooled coil
increases over time, restricting the energy transfer to the outdoor
unit's coil. Heating capability decreases and the system needs to go
into defrost operation to be able to remove frost from the outdoor
unit’s coil. During defrost operation the heating capacity on the
indoor unit side will temporarily drop until defrosting is completed.
After defrosting, the unit will regain its full heating capacity.
If Then
RXYQQ outdoor unit
is installed
The indoor unit will stop fan operation, the
refrigerant cycle will reverse and energy
from inside the building will be used to
defrost the outdoor unit coil.
The indoor unit will indicate defrost operation on the display .
Hot start
In order to prevent cold air from blowing out of an indoor unit at the
start of heating operation, the indoor fan is automatically stopped.
The display of the user interface shows . It may take some
time before the fan starts. This is not a malfunction.

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Productinformatie

MerkDaikin
ModelRXYQQ16U7Y1B
CategorieNiet gecategoriseerd
TaalNederlands
Grootte8215 MB