10 For the user
Installation and operation manual
25
5TMV1B
VRV IV-S system air conditioner
4P399985-1B – 2015.06
ORG
Orange
RED
Red
WHT
White
YLW
Yellow
Legend for wiring diagram 5:
A1P
Printed circuit board (main)
A2P
Printed circuit board
BS1~BS5
Push button switch
C1
Capacitor
DS1
DIP switch
E1HC
Crankcase heater
F1U
Fuse
F3U, F4U
Fuse (T 6.3 A / 250 V)
F6U
Fuse (T 5.0 A / 250 V)
H1P~H8P
Light‑emitting diode (service monitor orange)
H2P:
▪ Prepare, test: Flickering
▪ Malfunction detection: Light up
HAP
Light-emitting diode (service monitor is green)
HBP
Light-emitting diode (service monitor is green)
K11M
Magnetic contactor
K1R
Magnetic relay (Y1S)
K4R
Magnetic relay (E1HC)
K10R
Magnetic relay
L1R~L3R
Reactor
M1C
Motor (compressor)
M1F
Motor (fan)
PS
Switching power supply
R1, R2
Resistor
R1T
Thermistor (air)
R2T
Thermistor (discharge)
R3T
Thermistor (suction 1)
R4T
Thermistor (heat exchanger de-icer)
R5T
Thermistor (suction 2)
R6T
Thermistor (subcool heat exchanger)
R7T
Thermistor (liquid pipe)
FINTH
Thermistor (fin)
S1NPH
High pressure sensor
S1NPL
Low pressure sensor
S1PH
High pressure switch
V1R
IGBT power module
V2R
Diode module
V1T~V3T
Insulated gate bipolar transistor (IGBT)
V1D~V3D
Diode
X1M, X2M
Terminal strip
X37A
Connector
Y1E
Electronic expansion valve (main)
Y3E
Electronic expansion valve (subcool heat exchanger)
Y1S
Solenoid valve (4‑way valve)
Z1C~Z7C
Noise filter (ferrite core)
Z1F~Z5F
Noise filter
For the user
10
About the system
The indoor unit part of VRV IV-S heat pump system can be used for
heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
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.
INFORMATION
▪ Combination of VRV DX and RA DX indoor units is not
allowed.
▪ Combination of RA DX and AHU indoor units is not
allowed.
▪ Combination of RA DX and aircurtain indoor units is not
allowed.
10.1
System layout
g
d
d
c
c
f
e
b
a
g
f
e
a
VRV IV-S Heat pump outdoor unit
b
Refrigerant piping
c
VRV direct expansion (DX) indoor unit
d
User interface (dedicated depending on indoor unit type)
e
BP box (required to connect Residential Air (RA) or Sky Air
(SA) direct expansion (DX) indoor units)
f
Residential Air (RA) direct expansion (DX) indoor units
g
User interface (wireless, dedicated depending on indoor
unit type)
