Daikin RXYQ96PATJ [85/108] 5 example of connection
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Daikin RXYQ96PATJ [85/108] 5 example of connection

Daikin RXYQ96PATJ [85/108] 5 example of connection
Installation EDUS391000-N_a
84 Installation of Outdoor Units
6-5 Example of connection
Example of connection
(Connection of 8 indoor units)
Outside unit
side
(3 pipes)
Indoor unit
side
(2 pipes)
Suction gas pipe
HP/LP gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Branch
Selector
Unit
Suction gas pipe
HP/LP gas pipe
Liquid pipe
(Suction) gas pipe
Liquid pipe
Piping from outside unit to Branch Selector
unit
Piping from Branch Selector unit to indoor
unit or Piping from Refrigerant branch kit to
indoor unit used as cooling only
(Bold) : 3 pipes
(Thin) : 2 pipes
Branch with REFNET joint Branch with REFNET joint and header Branch with REFNET header
Single
outside
system
REYQ
72
~
120
PAYD
REYQ
72
~
120
PATJ
Multi
outside
system
REYQ
144~192
PAYD
REYQ
216
~
240
PYDNR
REYQ
144-192
PATJ
REYQ
216
~
240
PTJUR
Outside unit
Outside unit Outside unit
Outside unit Outside unit
REFNET joint (A~G)
REFNET joint (A~G)
B1 ~ B4
: Branch Selector Unit
1 ~ 6 : Indoor unit (Cool/Heat selection possible)
7 , 8 : Indoor unit (Cooling only)
REFNET joint (A~G)
REFNET header
REFNET header
First outside unit multi connection piping kit
REFNET joint (A~G)
REFNET header
REFNET header
Maximum
allowable
length
Allowable
height
difference
Allowable length after the branch
Between outside unit (*2)
and indoor unit
Between first outside unit multi
connection piping kit and outside unit
(in case of multi system)
Between outside and indoor units
Between indoor and indoor units
Between outside and outside units
Actual pipe
length
Equivalent
length
Actual and
Equivalent
pipe length
Actual pipe
length
Difference in height
Difference in height
Difference in height
Total extention length
Pipe length between outside unit (*2) and indoor unit < 540 ft
Example 8 : a + b + c + d + e < 540 ft
Example 6 : a + b + 540 ft, 8 : a + m + n + p
<
540 ft
Example 8 : a + o < 540 ft
Equivalent pipe length between outside unit (*2) and indoor unit < 620 ft (Note 1)
(Assume eqivalent pipe length of REFNET joint to be 1.6 ft, that of REFNET header to be 3.3 ft, that of BSVQ36 · 60 · 96 to be 13 ft, for calculation purposes)
Total piping length from outside unit (*2) to all indoor unit 3280 ft
Actual pipe length from first outside unit multi connection piping kit to outside unit < 33 ft
Equivalent pipe length from first outside unit multi connection piping kit to outside unit < 43 ft
Actual pipe length from first refrigerant branch kit (either REFNET joint or REFNET header) to indoor unit < 130 ft (*2)
Example 8 : b + c + d + e + s <130 ft
Difference in height between outside unit and indoor unit (H1) < 164 ft (*3)(Max 295 ft if the outside unit is below (*4)
Difference in height between adjacent indoor units (H2) < 49 ft
Difference in height between adjacent outside units (H3) < 16 ft
Outside unit
r < 33 ft
(Equivalent length < 43 ft)
t < 33 ft
(Equivalent length < 43 ft)
Example 6 : b + 130 ft, 8: m + n + p < 130 ft Example 8 : o 130 ft
a
b
c
d
e
a
b
c
d
e
H1
H1
H1
H2
s
r
pn
f
ki
f
ki
qom
pn
qom
g
G
F
j
ABCDE
H1
S
r
ABCDE
B1 B2 B3 B4
1234567
8
H2
g
G
F
1234567
8
B1 ~ B5
: Branch Selector Unit
1 ~ 4 , 7 , 8 :
Indoor unit (Cool/Heat selection possible)
5 , 6 : Indoor unit (Cooling only)
B1 ~ B6
: Branch Selector Unit
1 ~ 6 :
Indoor unit (Cool/Heat selection possible)
7 , 8 : Indoor unit (Cooling only)
B1 ~ B6
: Branch Selector Unit
1 ~ 6 :
Indoor unit (Cool/Heat selection possible)
7 , 8 : Indoor unit (Cooling only)
B1 ~ B5
: Branch Selector Unit
1 ~ 4 , 7 , 8 :
Indoor unit (Cool/Heat selection possible)
5 , 6 : Indoor unit (Cooling only)
B1 ~ B4
: Branch Selector Unit
1 ~ 6 : Indoor unit (Cool/Heat selection possible)
7 , 8 : Indoor unit (Cooling only)
a
a
m
m
c
d
e
f
g
h
i
j
k
o
n
A
A
B
H2
B1 B2 B3 B4
B5
123456 7
8
H3
r
t
H3
H3
r
t
a
b
c
d
e
f
h
k
o
B
8
H2
r
t
a
B1 B2 B3 B4
123456 7
B5
b
c
d
e
m
p
p
n
b
g
h
i
j
k
f
d
b
h
j
f
o
n
H2
H1H1
B1 B2 B3 B4 B5 B6
B1 B2 B3 B4 B5 B6
1234567
8
1234567
8
c
e
m
g
i
k
o
n
H2
r
t
g
i
j
Outside unit
(*3) This can be extended to 295 ft with a replacement outdoor unit PCB.
(*4) If the difference between the outdoor unit and indoor unit is greater than 164 ft, the liquid line must be increased by one size.
(*1) Indicates the Outside unit multi-connection piping kit.
(*2) In case of multi outdoor system, re-read “outside unit” to “the first Outside unit multi connection piping kit” as seen from the indoor unit.

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