U-5~48MX3
Urban Multi air conditioner
4PW16235-1C
Installation manual
7
6.3.
Example of connection
Example of connection
(Connection of 8 indoor units Heat pump
system)
Branc
h with line branc
h pipe
Branc
h with line branc
h pipe and header branc
h pipe
Branc
h with header branc
h pipe
One outdoor unit
installed
(U-5~16MX3)
When m
ultiple out-
door units installed
(U-18~...MX3)
(*) If the system capacity is U-18MX3 or
more
, re-read to the first outdoor br
anch as
seen from the indoor unit.
Maxim
um
allo
wab
le
length
Betw
een outdoor and
indoor units
Actual pipe length
Pipe length betw
een outdoor and indoor units
≤
150 m
[Example] unit 8:
a+b+c+d+e+f+g+p
≤
150 m
[Example] unit 6:
a+b+h
≤
150 m, unit 8:
a+i+k
≤
150 m
[Example] unit 8:
a+i
≤
150 m
Equiv
alent length
Equiv
alent pipe length betw
een outdoor and indoor units
≤
175 m (Assume equiv
alent pipe length of line br
anch pipe to be 0.5 m and of the header br
anch pipe to be 1.0 m.
(f
or calculatio
n pur
poses))
T
otal e
xtension
length
T
otal piping length from outdoor unit* to all indoor units
≤
300 m
Betw
een outdoor br
anch
and outdoor unit (Only f
or
U-18MX3 or more)
Actual pipe length
Piping length from outdoor br
anch to outdoor unit
≤
10 m.
Appro
ximately length:
max.
13 m
Allo
wab
le
height
Betw
een outdoor and
indoor units
Diff
erence in
height
Diff
erence in height betw
een outdoor and indoor units (H1)
≤
50 m (
≤
40 m if outdoor unit is located in a lo
w
er position).
Betw
een indoor and indoor
units
Diff
erence in
height
Diff
erence in height betw
een adjacent indoor units (H2)
≤
15 m
Betw
een outdoor and
outdoor units
Diff
erence in
height
Diff
erence in height betw
een outdoor unit (main) and outdoor unit (sub) (H3)
≤
5 m
Allo
wab
le length after the branc
h
Actual pipe length
Pipe length from first refr
iger
ant br
anch kit (either line br
anch pipe or header br
anch pipe) to indoor unit
≤
40 m
[Example] unit 8:
b+c+d+e+f+g+p
≤
40 m
[Example] unit 6:
b+h
≤
40 m, unit 8:
i+k
≤
40 m
[Example] unit 8:
i
≤
40 m
Refrig
erant branc
h kit selection
Refr
iger
ant br
anch kits can only be used with R-410A.
Ho
w to select the line branc
h pipe
•
When using line br
anch pipe at the first br
anch counted from the outdoor unit side.
Choose from the f
ollo
wing tab
le in accordance with the capacity of the outdoor unit.
•F
or line br
anch pipes other than the fi
rst br
anch, select the proper branch kit model based on the total capacity
inde
x.
Ho
w to select the header branc
h pipe
•
Choose from the f
ollo
wing tab
le in accordance with the total capacity of all the indoor units connected belo
w the
header br
anch pipe
.
•
Note:
250 type cannot be connected below the header br
anch pipe
.
Ho
w to c
hoose an outdoor branc
h kit (needed if the outdoor unit capacity type is
U-18MX3 or
more
.)
•
Choose from the f
ollo
wing tab
le in accordance with the number of outdoor units
.
Example of do
wnstream indoor units
[Example]
in case of line br
anch pipe C;
indoor units 3+4+5+6+7+8
[Example]
in case of line br
anch pipe B;
indoor units 7+8,
in case of header br
anch pipe;
indoor units 1+2+3+4+5+6
[Example]
in case of header br
anch pipe;
indoor units 1+2+3+4+5+6+7+8
indoor unit
line br
anch pipe
header br
anch pipe
a
AB
C
D
E
F
G
bcd
e
f
g
hi
j
k
l
m
n
12
34
56
7
8
H2
H1
P
H1
H2
a
i
b
cd
e
f
g
h
123456
k
j
78
A
B
a
H1
H2
cd
e
f
g
h
i
b
1234567
8
ab
c
d
e
f
g
8
H2
H1
H3
P
hi
j
k
l
m
n
12
34
56
7
H1
a
i
b
cd
e
f
g
h
123456
k
j
7
8
AB
H2
H1
H3
a
cd
e
f
g
i
h
b
123456
7
8
H2
s
r
t
r
≤
10 m (Appro
ximately length:
max.
13 m)
s
≤
10 m (Appro
ximately length:
max:
13 m)
t
≤
10 m (Appro
ximately length:
max 13 m)
Outdoor unit capacity type
Refrig
erant branc
h kit name
U-5MX3
CZ-P20BK12Q
U-8+10MX3
CZ-P29BK12Q
U-12~22MX3
CZ-P64BK12Q
U-24MX3
CZ-P75BK12Q
Indoor capacity type
Refrig
erant branc
h kit name
<200
CZ-P20BK12Q
200
≤
x<290
CZ-P29BK12Q
290
≤
x<640
CZ-P64BK12Q
>640
CZ-P75BK12Q
Indoor capacity type
Refrig
erant branc
h kit name
<290
CZ-P29HK12Q (Max.
8 kit)
290
≤
x<640
CZ-P64HK12Q (Max.
8 kit)
>640
CZ-P75HK12Q (Max.
8 kit)
Number of outdoor units
Branc
h kit name
2
CZ-32PJ1PQ
(Max.
4 kit)
3
CZ-48PJ1PQ
(Max.
8 kit)
Содержание U-5MX3XPQ
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