10 About the system
Installation and operation manual
25
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Legend for wiring diagram RKXYQ5:
A1P
Printed circuit board (main)
A2P
Printed circuit board (inverter)
BS*
Push button (A1P)
C*
Capacitor (A2P)
DS1
DIP switch (A1P)
F1U, F2U
Fuse (T 31.5 A / 250 V) (A1P)
F3U, F5U
Fuse (T 6.3 A / 250 V) (A1P)
H*P
LED (service monitor orange) (A1P)
HAP
Running LED (service monitor green) (A*P)
K1M
Magnetic contactor (A2P)
K1R
Magnetic relay (A*P)
L1R
Reactor
M1C
Motor (compressor)
M1F
Motor (fan)
PS
Switching power supply (A2P)
Q1DI
Earth leakage circuit breaker (field supply)
R*
Resistor (A2P)
R2T
Thermistor (discharge)
R3T
Thermistor (suction accumulator)
R4T
Thermistor (subcool heat exchanger gas)
R5T
Thermistor (suction compressor)
R7T
Thermistor (liquid)
R10T
Thermistor (fin)
S1NPL
Low pressure sensor
S1NPH
High pressure sensor
S1PH
High pressure switch
S*S
Cool/heat selector switch (optional)
V1R
IGBT power module (A2P)
V2R
Diode module (A2P)
X1M
Terminal strip (power supply)
X2M
Terminal strip (transmission wiring)
X*Y
Connector
Y3E
Electronic expansion valve
Y1S
Solenoid valve (4‑way valve)
Z*C
Noise filter (ferrite core)
Z*F
Noise filter (A1P)
For the user
10
About the system
The VRV IV heat pump for indoor installation can be used for
heating/cooling applications.
NOTICE
Do not use the air conditioner for other purposes. In order
to avoid any quality deterioration, do not use the unit for
cooling precision instruments, food, plants, animals or
works of art.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
10.1
System layout
d
d
c
c
a
b
VRV DX
VRV DX
VRV DX
EKEXV
AHU
d
d
1
2
1
In case of VRV DX indoor units
2
In case of VRV DX indoor units combined with an air
handling unit
a
Heat exchanger unit
b
Compressor unit
c
Refrigerant piping
d
User interface (dedicated depending on indoor unit type)
VRV DX
VRV direct expansion (DX) indoor unit
EKEXV
Expansion valve kit
AHU
Air handling unit
11
User interface
CAUTION
Never touch the internal parts of the controller.
Do not remove the front panel. Some parts inside are
dangerous to touch and appliance problems may happen.
For checking and adjusting the internal parts, contact your
dealer.
This operation manual will give a non-exhaustive overview of the
main functions of the system.
Detailed information on required actions to achieve certain functions
can be found in the dedicated installation and operation manual of
the indoor unit.
Refer to the operation manual of the installed user interface.
12
Operation
12.1
Operation range
Use the system in the following temperature and humidity ranges for
safe and effective operation.
