Rxyq18May1, Rxyq20May1, Rxyq22May1, Rxyq24May1; Rxyq26May1, Rxyq28May1, Rxyq30May1, Rxyq32May1; Rxyq34May1, Rxyq36May1, Rxyq38May1, Rxyq40May1; Rxyq42May1, Rxyq44May1, Rxyq46May1, Rxyq48May1316 - Daikin RXYQ5-48MAY1 Service Manual

Selection of Pipe Size, Joints and Header
6.2 RXYQ18MAY1, RXYQ20MAY1, RXYQ22MAY1,
RXYQ24MAY1, RXYQ26MAY1, RXYQ28MAY1,
RXYQ30MAY1, RXYQ32MAY1, RXYQ34MAY1,
RXYQ36MAY1, RXYQ38MAY1, RXYQ40MAY1,
RXYQ42MAY1, RXYQ44MAY1, RXYQ46MAY1,
RXYQ48MAY1
6.2.1 How to select the REFNET Joint
How to select the REFNET Joint
Select the REFNET Joint from the following table.When using REFNET Joints at the first branch
counted from the outdoor unit side.
(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 :
Total capacity index of indoor units
6.2.2 How to select pipe size
Main Piping (Between Multi connection piping kit and REFNET Joint)
Select the proper ones based on the following table :
Piping Material
Select the piping material to be used from the next table according to piping size.
316
Outdoor Unit
RXYQ18MAY1-22MAY1
RXYQ24MAY1-48MAY1
<200
≥200~<290
≥290
≥640
Outdoor Unit
RXYQ18MAY1
RXYQ20MAY1
RXYQ22MAY1
RXYQ24MAY1
RXYQ26MAY1
RXYQ28MAY1
RXYQ30MAY1
RXYQ32MAY1
RXYQ34MAY1
RXYQ36MAY1
RXYQ38MAY1
RXYQ40MAY1
RXYQ42MAY1
RXYQ44MAY1
RXYQ46MAY1
RXYQ48MAY1
Piping Size (O / D)
φ15.9 or less
φ19.1 or more
REFNET Joint (Kit Name)
KHRP26M72T
KHRP26M73T
REFNET Joints (Kit Name)
KHRP26M22T
KHRP26M33T
KHRP26M72T
KHRP26M73T
Gas Liquid
φ28.6
φ15.9
φ34.9
φ19.1
φ41.3
Temper grade of Material
O
1 / 2H or H
Si39-407
* O: Soft (Annealed)
* H: Hard (Drawn)
Appendix