8 Commissioning
Installer and user reference guide
40
RWEYQ8~1 RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1 – 2017.04
If the unit internal temperature is higher than the zero energy
dissipation setting temperature, the zero energy dissipation control
will start and cool down the unit.
[2‑74]
Description
0
25
1
27
2
29
3 (default)
31
4
33
5
35
6
37
7
39
[2‑81]
Cooling comfort setting.
This setting is used in conjunction with setting [2‑8].
[2‑81]
Cooling comfort setting
0
Eco
1 (default)
Mild
2
Quick
3
Powerful
[2‑82]
Heating comfort setting.
This setting is used in conjunction with setting [2‑9].
[2‑82]
Heating comfort setting
0
Eco
1 (default)
Mild
2
Quick
3
Powerful
7.2.9
To connect the PC configurator to the
outdoor unit
X27A
a
b
c
2
3
4
5
H J
ST
X27A
A1P
a
PC
b
Cable (EKPCCAB)
c
Outdoor 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 outdoor
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.
NOTICE
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 outdoor 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
installer and user
reference guide
.
Installation
Check that the unit is properly installed, to avoid abnormal
noises and vibrations when starting up the unit.
Field wiring
Be sure that the field wiring has been carried out
according to the instructions described in the chapter
"6.9 Connecting the electrical wiring" on page 31
,
according to the wiring diagrams and according to the
applicable legislation.
Power supply voltage
Check the power supply voltage on the local supply panel.
The voltage must correspond to the voltage on the
identification label of the unit.
