Daikin VRV W T Series User manual

Installation manual
VRV W T-Series water-cooled system air conditioner English
Manuel d'installation
Climatiseur système refroidi par eau VRV W série T Français
Manual de instalación
Sistema de climatización condensado por agua VRV W serie T Español
Installation manual
VRV W T-Series water-cooled system air conditioner
RWEQ96TAYCU
RWEQ120TAYCU
RWEQ144TAYCU
RWEQ192TAYCU
RWEQ216TAYCU
RWEQ240TAYCU
RWEQ264TAYCU
RWEQ288TAYCU
RWEQ312TAYCU
RWEQ336TAYCU
RWEQ360TAYCU
RWEQ384TAYCU
RWEQ408TAYCU
RWEQ432TAYCU
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.

4 Preparation
Installation manual
9
RWEQ96~432TAYCU
VRV W T-Series water-cooled system air conditioner
4P540122-1B – 2018.11
3.5.5 Possible options for the outside unit
INFORMATION
Refer to the technical engineering data for the latest option
names.
Refrigerant branching kit
In case of heat pump system
Description Model name
Refnet header KHRP26M22H9
KHRP26M33H9
KHRP26M72H9
KHRP26M73HU9
Refnet joint KHRP26A22T9
KHRP26A33T9
KHRP26M72TU9
KHRP26M73TU9
In case of heat recovery system
Description Model name
Refnet header KHRP25M33H9
KHRP25M72H9
KHRP25M73HU9
Refnet joint KHRP25A22T9
KHRP25A33T9
KHRP25M72TU9
KHRP25M73TU9
For the selection of the optimal branching kit, please refer to
"4.3.3 To select refrigerant branch kits" on page 12.
Outside multi connection piping kit
In case of heat pump system
Number of outside units Model name
2 BHFP22T84U
3 BHFP22T126U
In case of heat recovery system
Number of outside units Model name
2 BHFP26T84U
3 BHFP26T126U
Cool/heat selector
In order to control the cooling or heating operation from a central
location, the following option can be connected:
Description Model name
Cool/heat change over switch KRC19-26A6
Cool/heat change over PCB BRP2A81
With optional fixing box for the
switch
KJB111A
External control adaptor (DTA104A61/62)
To instruct specific operation with an external input coming from a
central control the external control adaptor can be used. Instructions
(group or individual) can be instructed for low noise operation and
power consumption limitation operation.
PC configurator cable (999482P3)
You can make several commissioning field settings through a
personal computer interface. For this option 999482P3 is required
which is a dedicated cable to communicate with the outside unit.
4 Preparation
4.1 Overview: Preparation
This chapter describes what you have to do and know before going
on-site.
It contains information about:
▪ Preparingtheinstallationsite
▪ Preparingtherefrigerantpiping
▪ Preparingthewaterpiping
▪ Preparingtheelectricalwiring
4.2 Preparing installation site
4.2.1 Installation site requirements of the
outside unit
CAUTION
This unit is designed for indoor installation only.
▪ Provide required service space around the unit as stated in the
technical engineering book or in section "11.2 Service space:
Outside unit" on page 48 of this manual.
▪ Ensurethatthefoundationisstrongenoughtosupporttheweight
of the unit and the floor is flat to prevent vibration and noise
generation.
▪ Make sure the area is well ventilated. Do NOT block any
ventilation openings.
▪ Makesuretheunitislevel.
▪ Make sure to install the unit in a machine room that is free of
moisture. The unit is designed for indoor use only.
▪ Select the location of the unit in such a way that the sound
generated by the unit does not disturb anyone, and the location is
selected according the applicable legislation.
Do NOT install the unit in the following places:
▪ Inpotentiallyexplosiveatmospheres.
▪ In places where there is machinery that emits electromagnetic
waves. Electromagnetic waves may disturb the control system,
and cause malfunction of the equipment.
▪ In places where there is a risk of fire due to the leakage of
flammable gases (example: thinner or gasoline), carbon fiber,
ignitable dust.
▪ Inplaceswherecorrosivegas(example:sulphurousacidgas)is
produced. Corrosion of copper pipes or soldered parts may cause
the refrigerant to leak.
▪ Inplaceswhereamineraloilmist,sprayorvapormaybepresent
in the atmosphere. Plastic parts may deteriorate and fall off or
cause water leakage.
NOTE
This is a class A product. In a domestic environment this
product may cause radio interference in which case the
user may be required to take adequate measures.

8 Commissioning
Installation manual
41
RWEQ96~432TAYCU
VRV W T-Series water-cooled system air conditioner
4P540122-1B – 2018.11
Error code (Auto
backup possible) Error contents
H9
Outside unit inside air thermistor (R1T) abnormality
HC Water inlet thermistor (R9T) abnormality
Water outlet thermistor (R10T) abnormality
J3 Discharge pipe thermistor (R12T) abnormality
Compressor body thermistor (R13T) abnormality
J4 Plate heat exchanger gas thermistor (R4T)
abnormality
J5 Suction pipe thermistor (R3T) abnormality
J6 Plate heat exchanger liquid thermistor (R7T)
abnormality
J7 Receiver outlet liquid pipe thermistor (R6T)
abnormality
Subcooling heat exchanger outlet liquid pipe
thermistor (R8T) abnormality
Injection pipe thermistor (R11T) abnormality
J9 Subcooling heat exchanger outlet gas pipe
thermistor (R5T) abnormality
Exhaust heat cancellation heat exchanger gas
pipe thermistor (R2T) abnormality
JA High pressure sensor abnormality
JC Lowpressuresensorabnormality
L1 Inverter PCB abnormality
L3 Reactor temperature rise abnormality
L4
Inverter radiation fin temperature rise abnormality
L5 Inverter compressor instantaneous overcurrent
L8 Inverter compressor overcurrent
L9 Inverter compressor startup abnormality
LC Transmission error between inverter PCB and
outside unit main PCB
7.2.9 To connect the PC configurator to the
outside unit
X27A
ab c
2
345
HJ S T
X27A
A1P
aPC
bCable (999482P3)
cOutside unit main PCB
8 Commissioning
8.1 Overview: Commissioning
After installation and once the field settings are defined, the installer
is obliged to verify correct operation. Therefore a test run must be
performed according to the procedures described below.
This chapter describes what you have to do and know to
commission the system after it is configured.
Commissioning typically consists of the following stages:
1 Checking the "Checklist before commissioning".
2 Performing a test run.
3 If necessary, correcting errors after abnormal completion of the
test run.
4 Operating the system.
8.2 Precautions when commissioning
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
CAUTION
Do not perform the test operation while working on the
indoor units.
When performing the test operation, not only the outside
unit, but the connected indoor unit will operate as well.
Working on an indoor unit while performing a test operation
is dangerous.
CAUTION
Do not insert fingers, rods or other objects into the air inlet
or outlet. Do not remove the fan guard. When the fan is
rotating at high speed, it will cause injury.
INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.
NOTE
Be sure to turn on the power 6 hours before operation in
order to have power running to the crankcase heater and
to protect the compressor.
During test operation, the outside unit and the indoor units will start
up. Make sure that the preparations of all indoor units are finished
(field piping, electrical wiring, air purge, ...). See installation manual
of the indoor units for details.
8.3 Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit must be closed, only then can
the unit be powered up.
You read the complete installation and operation
instructions, as described in the installation manual.
Installation
Check that the unit is properly installed, to avoid abnormal
noises and vibrations when starting up the unit.