Technical Data; Piping Diagram: Compressor Unit And Heat Exchanger Unit - Daikin VRV IV RKXYQ8T7Y1B Installation And Operation Manual

9 Technical data

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9 Technical data
Latest information can be found in the technical engineering data.
9.1 Piping diagram: Compressor unit
and heat exchanger unit
5 HP
M2F M1F
R3T
l
R2T
f
a
b
R7T
f
R4T
g
Y3E
c
f
h
d
e
f i
A Heat exchanger unit
B Compressor unit
a Stop valve (gas) (circuit 2: to indoor units)
b Stop valve (liquid) (circuit 2: to indoor units)
c Stop valve (liquid) (circuit 1: to heat exchanger unit)
d Stop valve (gas) (circuit 1: to heat exchanger unit)
e Service port (refrigerant charge)
f Filter
g Subcool heat exchanger
h Pressure regulating valve
i Capillary tube
j Accumulator
k Compressor accumulator
l Heat exchanger
M1C Compressor
M1F, M2F Fan motor
R1T (A) Thermistor (air)
Installation and operation manual
32
Cause
▪ Auto address malfunction (inconsistency)
▪ Mismatch of compressor
exchanger unit.
▪ The stop valves of the compressor unit are left
closed.
▪ The piping and wiring of the specified indoor unit
or heat exchanger unit are not connected
correctly to the compressor unit.
A
R1T
Y1E
f
B
Y1S
R3T
S1NPH
S1PH
S1NPL
R5T
R2T
k
j
M1C
3D098825-1A
▪ Check if
matches with powered unit amount (by monitor
unit and heat
mode) or wait till initialisation is finished.
▪ Check if
exchanger unit are compatible.
▪ Open the stop valves on both the gas and liquid
side.
▪ Confirm that the piping and wiring of the
specified indoor unit or heat exchanger unit are
connected correctly to the compressor unit.
R2T (A) Thermistor (gas)
R3T (A) Thermistor (coil)
R2T (B) Thermistor (discharge)
R3T (B) Thermistor (suction accumulator)
R4T (B) Thermistor (subcool heat exchanger gas)
R5T (B) Thermistor (suction compressor)
R7T (B) Thermistor (liquid)
S1NPH High pressure sensor
S1NPL Low pressure sensor
S1PH High pressure switch
Y1E, Y3E Electronic expansion valve
Y1S Solenoid valve (4‑way valve)
Heating
Cooling
8 HP
M3F M2F M1F
R3T
l
R2T
f
a
b
R5T
f
R6T
g
Y2E
c
f
d
e
f i
A Heat exchanger unit
B Compressor unit
a Stop valve (gas) (circuit 2: to indoor units)
b Stop valve (liquid) (circuit 2: to indoor units)
c Stop valve (liquid) (circuit 1: to heat exchanger unit)
d Stop valve (gas) (circuit 1: to heat exchanger unit)
e Service port (refrigerant charge)
f Filter
g Subcool heat exchanger
h Pressure regulating valve
i Capillary tube
j Accumulator
k Oil separator
VRV IV compressor unit for indoor installation
Solution
transmission wired unit amount
the compressor unit and
A
R1T
Y1E
f
Y1S
R3T S1NPH
S1PH
h
S1NPL
R7T
R21T
M1C
j
3D104510-1
RKXYQ5+8T7Y1B
4P408443-1B – 2016.04
heat
B
k
f
i