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Si39-406
Appendix
General Information
103
7.2.3 Branch with refnet header
(Connection of 8 indoor units Heat pump system)
One outdoor
unit installed
Branch with refnet header
H1
H2
a
b
d
f
h
j
l
n
o
c
e
g
i
k
m
REFNET header
Outdoor unit
BS unit
B1 B6
1
6
Cool/Heat selection possible
( ~ )
Indoor unit
1 8
( ~ )
7
8
Cooling only
( . )
1
2
3
4
5
6
7
8
B1
B2
B3
B4
B5
B6
( ~ )
Maximum
allowable
length
Between outdoor
and indoor units
• Actual pipe length
Pipe length between outdoor and indoor units
≤
330ft.
Example unit 6: a + o
≤
330ft.
• Equivalent length
Equivalent pipe length between outdoor and indoor units
≤
390ft.
(assume equivalent pipe length of refnet joint to be 1.6ft., that of refnet header to be 3.3ft.,
calculation purposes)
• Total extension length
Total piping length from outdoor unit* to all indoor units
≤
950ft.
Allowable
height
length
Between outdoor and indoor units
• Difference in height
Difference in height between outdoor and indoor units (H1)
≤
164ft.
(Max 130ft. if the outdoor unit is below)
Between indoor and indoor units
• Difference in height
Difference in height between adjacent indoor units (H2)
≤
49ft.
Allowable
length after
the branch
• Actual pipe length
Pipe length from first refrigerant branch kit (either refnet joint or refnet header) to indoor unit
≤
130ft.
Example unit 8: o
≤
130ft.
Summary of Contents for REYQ96MTJU
Page 1: ...Design Installation Testing Instruction R410A Heat Recovery 60Hz REYQ96MTJU Si39 406...
Page 6: ...Si39 406 iv Table of Contents...
Page 34: ...Installation Si39 406 28 General Information Flaring Procedure...
Page 68: ...Installation Si39 406 62 General Information Caution Caution label 3P124617 4P124614...
Page 114: ...Appendix Si39 406 108 General Information 3P135887 1...
Page 126: ...Appendix Si39 406 120 General Information 7 8 3 BS Unit BSVQ36MVJ BSVQ60MVJ 4D045338...
Page 128: ...Appendix Si39 406 122 General Information 7 9 2 Field Wiring REYQ96MTJU 3D042647A...
Page 156: ...Refrigerant Piping Si39 406 150 Installation Manual REYQ96MTJU...
Page 158: ...Refrigerant Piping Si39 406 152 Installation Manual REYQ96MTJU...
Page 230: ...Precautions for New Refrigerant R410A Si39 406 224 Precautions for New Refrigerant R410...
Page 236: ...375 Park Avenue Suite 3308 New York N Y 10152 info daikinac com www daikinac com...