25
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Technical data
Installer and user reference guide
149
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
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
25.2 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
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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)
Содержание VRV IV RKXYQ5T8Y1B Series
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