Specifications

Selection of Pipe Size, Joints and Header Si38-606
230 Appendix
5. Selection of Pipe Size, Joints and Header
5.1 RXM8M, 10M
5.1.1 How to select the REFNET Joint
How to select the REFNET Joint
When using REFNET Joints at the first branch counted from the outdoor unit side. Choose from
the following table in accordance with the capacity of the outdoor unit.
(Ex. : REFNET Joint A)
For REFNET Joints other than the first branch, select the proper ones based on the total
capacity index of the indoor units installed after the first branch using the following table :
5.1.2 How to select pipe size
Between outdoor unit and uppermost stream REFNET Joint.
5.1.3 How to select the REFNET header
Select the proper REFNET Header using the following table based on the total capacity index of
indoor units installed after the header.
Outdoor Unit REFNET Joints (Kit Name)
RXM8, 10 type KHRJ26K37T
Total capacity index of indoor
units
REFNET Joints (Kit Name)
<100 KHRJ26K11T
100≤x<160 KHRJ26K18T
160≤x<330 KHRJ26K37T
Pipe size connected to outdoor unit.
Outdoor Unit Gas
Liquid
RXM8, 10MY1 φ28.6×1.2
φ
12.7×0.8
Total capacity index of indoor units REFNET Header (Kit Name)
<100 KHRJ26K11H
100≤x<160 KHRJ26K18H
160≤x<330 KHRJ26K37H