For The User; 10 About The System; System Layout; User Interface - Daikin RKXYQ5T7Y1B Installation And Operation Manual

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)

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

a
c c
VRV DX
b
d
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)
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
1 2
VRV DX VRV DX EKEXV
AHU
d d d
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)
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.

10 About the system

Installation and operation manual
25