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a
b
c
X1M
L1
L2
L3
N
b
c
a
Transmission wiring
b
Power supply
c
Cable tie
5 Reattach the service covers.
6 Connect an earth leakage circuit breaker and fuse to the power
supply line.
5.8
Finishing the compressor unit
installation
5.8.1
To finish the transmission wiring
After installing the transmission wires inside the unit, wrap them
along with the on-site refrigerant pipes using finishing tape, as
shown in figure below.
a
c
b
e
d
a
Liquid pipe
b
Gas pipe
c
Insulator
d
Transmission wiring (F1/F2)
e
Finishing tape
6
Configuration
INFORMATION
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
≥50 mm
a
b
c
X2M
F1 F2
a
c
DANGER: RISK OF ELECTROCUTION
6.1
Making field settings
6.1.1
About making field settings
To configure the heat pump system, you must give input to the
compressor unit's main PCB (A1P). This involves the following field
setting components:
▪ Push buttons to give input to the PCB
▪ A display to read feedback from the PCB
▪ DIP switches (only change the factory settings if you install a cool/
heat selector switch).
Field settings are defined by their mode, setting and value. Example:
[2‑8]=4.
PC configurator
You can also make field settings through a personal computer
interface (for this, option EKPCCAB is required). The installer can
prepare the configuration (off-site) on PC and afterwards upload the
configuration to the system.
See also:
"6.1.9 To connect the PC configurator to the compressor
unit" on
page 20.
Mode 1 and 2
Mode
Mode 1
Mode 1 can be used to monitor the current
situation of the compressor unit. Some field
(monitoring
setting contents can be monitored as well.
settings)
Mode 2
Mode 2 is used to change the field settings of
the system. Consulting the current field setting
(field settings)
value and changing the current field setting
value is possible.
In general, normal operation can be resumed
without special intervention after changing field
settings.
Some field settings are used for special
operation (e.g., 1 time operation, recovery/
vacuuming setting, manual adding refrigerant
setting, etc.). In such a case, it is required to
abort the special operation before normal
operation can restart. It will be indicated in
below explanations.
6.1.2
To access the field setting components
See
"5.1.1 To open the compressor unit" on
6.1.3
Field setting components
The components to make field settings are as follows:
A2P
TEST/
A1P
MODE
IND
HWL
H1P
H2P
H3P
BS1
BS2
MODE
SET
X1M
X2M
DS1
DIP switches
BS1~BS5
Push buttons
H1P~H7P
7‑LEDs display
H8P
LED for indication during initialisation
ON ( ) OFF ( ) Flashing ( )
6 Configuration
Description
page 7.
MASTER
SLAVE
L.N.O.P.
DEMAND
MULTI
H4P
H5P
H6P
H7P
H8P
BS3
BS4
BS5
RETURN
TEST
RESET
ON
DS1
OFF
1 2
Installation and operation manual
15
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Troubleshooting
