Daikin VRV IV RKXYQ8T7Y1B, Installation And Operation Manual

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9 Technical data
Installation and operation manual
33
8T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1B – 2016.04
l Heat exchanger
M1C Compressor
M1F~M3F Fan motor
R1T (A) Thermistor (air)
R2T (A) Thermistor (gas)
R3T (A) Thermistor (coil)
R21T (B) Thermistor (discharge)
R3T (B) Thermistor (suction accumulator)
R5T (B) Thermistor (liquid)
R6T (B) Thermistor (subcool heat exchanger gas)
R7T (B) Thermistor (suction compressor)
S1NPH High pressure sensor
S1NPL Low pressure sensor
S1PH High pressure switch
Y1E, Y2E Electronic expansion valve
Y1S Solenoid valve (4‑way valve)
Heating
Cooling
9.2 Wiring diagram: Compressor unit
The wiring diagram is delivered with the unit, located on the switch
box cover.
Symbols:
X1M Main terminal
Earth wiring
15
Wire number 15
Field wire
Field cable
**
/12.2
Connection ** continues on page 12 column 2
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Legend for wiring diagram 5 HP:
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)
Notes for 8 HP:
1 When using the optional adapter, refer to the installation
manual of the optional adapter.
2 Refer to the installation or service manual on how to use
BS1~BS3 push buttons, and DS1+DS2 DIP switches.
3 Do not operate the unit by short-circuiting protection device
S1PH.
4 For connection of INDOOR-OUTDOOR F1-F2 transmission
wiring, and OUTDOOR-OUTDOOR F1-F2 transmission
wiring, refer to the service manual.
Legend for wiring diagram 8 HP:
A1P Printed circuit board (main)
A2P Printed circuit board (noise filter)
A3P Printed circuit board (inverter)
A4P Printed circuit board (cool/heat selector)
BS* Push button (mode, set, return) (A1P)
C* Capacitor (A3P)
DS* DIP switch (A1P)
E1HC Crankcase heater
F*U Fuse (T 3.15 A / 250 V) (A1P)
F3U Field fuse
F400U Fuse (T 6.3 A / 250 V) (A2P)
F410U Fuse (T 40 A / 500 V) (A2P)
F411U Fuse (T 40 A / 500 V) (A2P)
F412U Fuse (T 40 A / 500 V) (A2P)
HAP Running LED (service monitor green) (A1P)
K1M Magnetic contactor (A3P)
K*R Magnetic relay (A*P)
L1R Reactor
M1C Motor (compressor)
M1F Motor (fan)
PS Power supply (A1P, A3P)
Q1DI Earth leakage circuit breaker (field supply)
Q1RP Phase reversal detect circuit (A1P)
R21T Thermistor (M1C discharge)
R3T Thermistor (accumulator)
R5T Thermistor (subcool liquid pipe)
R6T Thermistor (heat exchanger gas pipe)
R7T Thermistor (suction)
R* Resistor (A3P)
S1NPH High pressure sensor
S1NPL Low pressure sensor