Technical Data; Service Space: Outdoor Unit; Piping Diagram: Outdoor Unit - Daikin RXYSQ5T8VB Installation And Operation Manual

Main code
▪ The stop valve of an outdoor unit is left closed.
▪ The piping and wiring of the specified indoor unit are not
connected correctly to the outdoor unit.
9

Technical data

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available on the Daikin extranet (authentication required).
9.1

Service space: Outdoor unit

When mounting units side by side, the piping route must be to the front, to the back or downwards. In this case the piping route to the side is
not possible.
When mounting the units side by side and routing the piping to the back, you must keep a distance of ≥250 mm between the units (instead of
≥100 mm as shown on the figures below).
Single unit ( ) | Single row of units (
See figure 1 on the inside of the front cover.
A,B,C,D Obstacles (walls/baffle plates)
E Obstacle (roof)
a,b,c,d,e Minimum service space between the unit and obstacles A, B, C, D and E
e Maximum distance between the unit and the edge of obstacle E, in the direction of obstacle B
B
e Maximum distance between the unit and the edge of obstacle E, in the direction of obstacle D
D
H Height of the unit
U
H ,H Height of obstacles B and D
B D
1 Seal the bottom of the installation frame to prevent discharged air from flowing back to the suction side through the bottom of the unit.
2 Maximum two units can be installed.
Not allowed
Multiple rows of units (
See figure 2 on the inside of the front cover.
Stacked units (max. 2 levels) (
See figure 3 on the inside of the front cover.
A1=>A2 (A1) If there is danger of drainage dripping and freezing between the upper and lower units...
(A2) Then install a roof between the upper and lower units. Install the upper unit high enough above the lower unit to prevent ice buildup at the
upper unit's bottom plate.
B1=>B2 (B1) If there is no danger of drainage dripping and freezing between the upper and lower units...
(B2) Then it is not required to install a roof, but seal the gap between the upper and lower units to prevent discharged air from flowing back to the
suction side through the bottom of the unit.
9.2

Piping diagram: Outdoor unit

b c d
R7T
Y3E
R6T
a
g
R5T
l
k c j
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482275-1 – 2017.04
Cause
)
)
)
c
Y1E
m
e
M1F M2F
R3T
R4T
Y1S
f
R2T
R1T
h
S1NPH
S1PH
M1C
i
INV
S1NPL
Solution
▪ Open the stop valve on both the gas and liquid side.
▪ Confirm that the piping and wiring of the specified indoor
unit are connected correctly to the outdoor unit.
a Stop valve (gas)
b Stop valve (liquid)
c Filter (3×)
d Subcool heat exchanger
e Pressure regulating valve
f Heat exchanger
g Service port (high pressure)
h Check valve
i Compressor accumulator
j Capillary tube
k Service port (refrigerant charge)
l Accumulator
m Heat sink PCB (only for RXYSQ4~6_V)
M1C Compressor
M1F-M2F Fan motor
R1T Thermistor (air)
R2T Thermistor (discharge)
R3T Thermistor (suction 1)
R4T Thermistor (heat exchanger)
R5T Thermistor (suction 2)
R6T Thermistor (subcool heat exchanger)
R7T Thermistor (liquid pipe)
S1NPH High pressure sensor
S1NPL Low pressure sensor
S1PH High pressure switch
Y1E Electronic expansion valve (main)
Y3E Electronic expansion valve (subcool heat exchanger)
Y1S Solenoid valve (4‑way valve)
Heating
Cooling
9 Technical data
Installation and operation manual
25