Si39-406
Refrigerant Piping Work
Installation Manual BS Unit
183
6.1
In Case of Connecting Only One Indoor Unit
6.2
When Connecting Multiple Indoor Units
6.3
Selection of Pipe Connection Size
Table 3 <Indoor and BS Unit Connection Piping Sizes>
Note: The piping size for the BS unit indicates the size of the connection side with the indoor unit.
Table 4 < Selection of Piping Size Based on Total Capacity of Indoor Unit >
See the section on
“2-4 COMBINATION”
at page 4 for details on indoor unit capacity.
To outdoor unit
or branch
Liquid piping
Suction gas piping
Discharge gas piping
Gas piping
Liquid piping
INDOOR
UNIT
Match the pipe size to the indoor
unit’s piping connection size.
BS unit
Select pipe size according to the
Table 4
<Upstream>
<Downstream>
Determine using
Table 4
based
on the total capacity of the indoor
units connected downstream.
See the installation manual included
with the indoor unit and other relevant
technical documents when selecting a
piping refrigerant branch kit.
<Upstream>
<Downstream>
Refrigerant branch kit
Gas piping
Liquid piping
Indoor unit
Indoor unit
Indoor unit
BS unit
To refrigerant
branch kit and
outdoor unit
Target unit
Piping size (outer diameter) (in)
Gas pipe
Liquid pipe
Indoor unit’s model No.
12, 18
1/2
1/4
24, 30, 36, 48
5/8
3/8
BS unit
BSVQ36MVJU
5/8
3/8
BSVQ60MVJU
Total capacity of
indoor units
[×10
3
Btu/h]
Piping size (outer diameter) (in)
Upstream
Downstream
Suction gas
pipe
Discharge gas
pipe
Liquid pipe
Gas pipe
Liquid pipe
Up to 24
1/2
3/8
1/4
1/2
1/4
24 or more and
less than 60
5/8
1/2
3/8
5/8
3/8
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...