15
English
+PVJGECUGYJGTGVJGGSWKXCNGPVRKRKPINGPIVJHTQOQWVFQQTWPKVUVQKPFQQTWPKVUűHVOOCMGUWTGVQWRUK\GVJGNKSWKFRKRGQHVJGOCKP
RKRGUGGVJGƂIWTGDGNQYTGHGTTKPIVQVJGVCDNGDGNQY&QPQVWRUK\GVJGJKIJNQYRTGUUWTGICURKRGCPFVJGUWEVKQPICURKRG
Outdoor unit capacity type
Liquid pipe
Main pipe
Upsize the liquid pipe
First refrigerant
branch kit
Branch
Selector
units
Indoor
units
Outdoor units
REYQ72, 96A type
I
3/8 in. (9.5 mm)
o
I
1/2 in. (12.7 mm)
REYQ120, 144A type
I
1/2 in. (12.7 mm)
o
I
5/8 in. (15.9 mm)
REYQ168-240A type
I
5/8 in. (15.9 mm)
o
I
3/4 in. (19.1 mm)
REYQ264-480A type
I
3/4 in. (19.1 mm)
o
I
7/8 in. (22.2 mm)
(*7)
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-
VKPHQWVFQQTWPKVKUNQYGTVJCPKPFQQTWPKVKVECPDGGZVGPFGFVQ
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+PVJGECUGYJGTGVJGGSWKXCNGPVRKRKPINGPIVJHTQOQWVFQQTWPKVUVQKPFQQTWPKVUűHVOCPF*GKIJVFKHHGTGPEGDGVYGGPQWVFQQTWPKVCPF
indoor unit (H1): >164 ft. (50 m) (if outdoor unit is lower than indoor unit, >130 ft. (40 m)), make sure to two size up the liquid pipe of the main
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between outdoor unit and indoor unit (H1) be less than 361 ft. (110 m). Do not upsize the high/low pressure gas pipe and the suction gas pipe.)
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Outdoor unit capacity type
Liquid pipe
REYQ72, 96A type
I
3/8 in. (9.5 mm)
o
I
5/8 in. (15.9 mm)
REYQ120, 144A type
I
1/2 in. (12.7 mm)
o
I
3/4 in. (19.1mm)
REYQ168-240A type
I
5/8 in. (15.9 mm)
o
I
7/8 in. (22.2 mm)
REYQ264-480A type
I
3/4 in. (19.1 mm)
o
Not applicable
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/CZKOWOECRCEKV[KPFGZQHEQPPGEVCDNGKPFQQTWPKVUHQT$5(36
KUŰRGT$TCPEJ5GNGEVQTWPKV
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6QVCNPWODGTQHRQTVUQH$TCPEJ5GNGEVQTWPKVUEQPPGEVGFKPRCUUVJTQWIJKUŰ
9JGPEQPFKVKQPUNKUVGFKPVJGVCDNGDGNQYCTGCNNUCVKUƂGFVJGCNNQYCDNGNGPIVJTGUVTKEVKQPUCHVGTDTCPEJKUŰHVO(QT$TCPEJ5GNGEVQT
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Necessary conditions
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9
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ƂIWTGKPVJGNQYGTTKIJV
7RUK\GVJGNKSWKFRKRGHTQOVJGƂTUV
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refrigerant branch kit for the indoor
unit beyond 130 ft. (40 m).
• If upsizing is impossible, the condi-
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• If the upsized line would become
larger than the main pipe, then the
main pipe should also be upsized.
Upsize the liquid pipes b, c, d, e, f and g in the
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-
lows:
I
3/8 in. (9.5 mm)
o
I
1/2 in. (12.7 mm)
I
1/2 in. (12.7 mm)
o
I
5/8 in. (15.9 mm)
I
5/8 in. (15.9 mm)
o
I
3/4 in. (19.1 mm)
I
3/4 in. (19.1 mm)
o
I
7/8 in. (22.2 mm)
C
REFNET joints
G
b
d
m
B
f
A
c
D
9
H
e
g
6
h
n
F
i
4
Outdoor unit
3
a
7
E
5
1
8
(A-G)
p
Indoor unit (1-9)
j
k
B1
B2
B3
B4
B5
B6
B7
2
s
r
q
Branch Selector units (B1-B7)
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From outdoor unit to the farthest indoor unit 9
From outdoor unit to the nearest indoor unit 1
2. The total piping length, calculated by
doubling the piping length as upsized
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(The main pipe, and lines that are
not upsized, should not be doubled.)
a +
b×2+c×2+d×2+e×2+f×2+g×2
+h+i+j+k+l+m+n+p+q+r+s
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3. The actual piping length from each
indoor units to the nearest refriger-
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•
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•
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•
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4. The difference between the actual
piping length from the outdoor unit to
the farthest indoor unit, and the actual
piping length from the outdoor unit to the
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Actual piping length of 9
Actual piping length of 1
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In the case of a multi Branch Selector unit, if a junction pipe kit (separately sold) is used for combining 2 lines, the actual piping length between the
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1. Upsize the liquid line between the joined 2 branches and the indoor unit.
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3. Double the pipe length of upsized line between joined 2 branches and the indoor unit, when calculating the overall total piping length.
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