16 Configuration
Installation and operation manual
29
RK RKXYQ8T7Y1B
VRV IV compressor unit for indoor installation
4P499900-1A – 2020.10
≥50 mm
a
b
b
a
X1M
X1M
A1P
X1M
b
a
c
c
8 HP
X1M (A1P)
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.
15.5
To check the insulation resistance
of the compressor
NOTICE
If, after installation, refrigerant accumulates in the
compressor, the insulation resistance over the poles can
drop, but if it is at least 1 MΩ, then the unit will not break
down.
▪ Use a 500 V mega-tester when measuring insulation.
▪ Do NOT use a mega-tester for low voltage circuits.
1
Measure the insulation resistance over the poles.
If
Then
≥1 MΩ
Insulation resistance is OK. This procedure
is finished.
<1 MΩ
Insulation resistance is not OK. Go to the
next step.
2
Turn ON the power and leave it on for 6 hours.
Result:
The compressor will heat up and evaporate any
refrigerant in the compressor.
3
Measure the insulation resistance again.
16
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.
DANGER: RISK OF ELECTROCUTION
16.1
Making field settings
16.1.1
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:
"To connect the PC configurator to the compressor
36].
Mode 1 and 2
Mode
Description
Mode 1
(monitoring
settings)
Mode 1 can be used to monitor the current
situation of the compressor unit. Some field
setting contents can be monitored as well.
Mode 2
(field settings)
Mode 2 is used to change the field settings of
the system. Consulting the current field setting
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.
16.1.2
To access the field setting components
See
18].
16.1.3
Field setting components
The components to make field settings differ depending on the
model.
Model
Field setting components
5 HP
▪ Push buttons (BS1~BS5)
▪ 7‑LEDs display (H1P~H7P)
▪ H8P: LED for indication during initialisation
▪ DIP switches (DS1)
8 HP
▪ Push buttons (BS1~BS3)
▪ 7‑segments display (
)
▪ DIP switches (DS1 and DS2)