
Appendix
Si39-303
110
General Information
7.3
Allowable Piping Length
7.3.1 Branch with refnet joint
(Connection of 8 indoor units Heat pump system)
One outdoor
unit installed
(RXYQ5 ~ 16)
Branch with refnet joint
When multiple
outdoor units
installed
(RXYQ18 ~)
a
A
B
C
D
E
F
G
b
c
d
e
f
g
h
i
j
k
l
m
n
1
2
3
4
5
6
7
8
H2
Outdoor unit
REFNET joint (C)
Indoor units (1-8)
H1
A
B
C
D
E
F
G
a
b
c
d
e
f
g
8
H2
H1
H3
P
Indoor units (1-8)
Outdoor unit
REFNET joint (A-G)
h
i
j
k
l
m
n
1
2
3
4
5
6
7
First outdoor
branch
Maximum
allowable
length
Between outdoor
and indoor units
• Actual pipe length
Pipe length between outdoor and indoor units
≤
150m
Example unit 8: a + b + c + d + e + f + g + p
≤
150m
• Equivalent length
Equivalent pipe length between outdoor and indoor units
≤
175m
(assume equivalent pipe length of refnet joint to be 0.5m, that of refnet header to be 1m,
calculation purposes)
• Total extension length
Total piping length from outdoor unit* to all indoor units
≤
300m
Between outdoor branch and outdoor unit
(Only for RXYQ18 or more)
• Actual pipe length
Piping length from outdoor branch to outdoor unit
≤
10m
(Approximately length: max 13m)
Allowable
height
length
Between outdoor and indoor units
• Difference in height
Difference in height between outdoor and indoor units (H1)
≤
50m
(Max 40m if the outdoor unit is below)
Between indoor and indoor units
• Difference in height
Difference in height between adjacent indoor units (H2)
≤
15m
Between outdoor and outdoor units
• Difference in height
Difference in height between outdoor unit (main) and outdoor unit (sub) (H3)
≤
5m
Allowable
length after
the branch
• Actual pipe length
Pipe length from first refrigerant branch kit (either refnet joint or refnet header) to indoor unit
≤
40m
Example unit 8: b + c + d + e + f + g + p
≤
40m
*If the system capacity is RXYQ18 or more, re-read to
the first outdoor branch as seen from the indoor unit.
r
t
s
Outdoor unit
r
≤
10m
s
≤
10m
t
≤
10m
Содержание VRV II Series
Страница 6: ...Si39 303 iv Table of Contents...
Страница 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Страница 124: ...Appendix Si39 303 118 General Information 3P114237A...
Страница 130: ...Appendix Si39 303 124 General Information BHFP22M135 Refer P 120 for Table 7 8 and 9 After connection piping...
Страница 140: ...Appendix Si39 303 134 General Information 7 10 Piping System Diagrams 7 10 1 Outdoor Unit RXYQ5MY1B...
Страница 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Страница 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Страница 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Страница 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Страница 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Страница 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Страница 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Страница 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Страница 158: ...Appendix Si39 303 152 General Information...
Страница 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Страница 226: ...Troubleshooting Si39 303 220 Operation Manual...