7 Commissioning
Installation and operation manual
20
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
Setting
(= binary)
Value
Description
[2‑32]
Forced, all time, power consumption limitation operation (no
external control adaptor is required to perform power consumption
limitation).
If the system always needs to be running under power
consumption limitation conditions, this setting activates and defines
the level power consumption limitation that will be applied
continuously. The level is according to the table.
(default)
Function not active.
Follows [2‑30] setting.
Follows [2‑31] setting.
[2‑41]
Cooling comfort setting.
This setting is used in conjunction with setting [2‑8].
Eco
(default)
Mild
Quick
Powerful
[2‑42]
Heating comfort setting.
This setting is used in conjunction with setting [2‑9].
Eco
(default)
Mild
Quick
Powerful
6.1.9
To connect the PC configurator to the
compressor unit
a
b
X41A
A1P
2
3
4
5
H J
ST
a
PC
b
Cable (EKPCCAB)
X41A
Connector
A1P
Compressor unit main PCB
7
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.
7.1
Precautions when commissioning
CAUTION
Do not perform the test operation while working on the
indoor units or the heat exchanger unit.
When performing the test operation, not only the
compressor unit will operate, but the heat exchanger unit
and the connected indoor units as well. Working on an
indoor unit or the heat exchanger unit while performing a
test operation is dangerous.
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 compressor unit, the heat exchanger unit
and the indoor units will start up. Make sure that the preparations of
the heat exchanger unit and all the indoor units are finished (field
piping, electrical wiring, air purge, ...). See installation manual of the
indoor units for details.
7.2
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
"5.7 Connecting the electrical wiring" on page 13
,
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.
Earth wiring
Be sure that the earth wires have been connected
properly and that the earth terminals are tightened.
Insulation test of the main power circuit
Using a megatester for 500 V, check that the insulation
resistance of 2 MΩ or more is attained by applying a
voltage of 500 V DC between power terminals and earth.
Never use the megatester for the transmission wiring.
