To Select Refrigerant Branch Kits - Daikin RXYSQ4T8VB Series Installer And User Reference Manual

D: Piping between refrigerant branch kit and BP unit
E: Piping between BP unit and RA DX indoor unit

18.1.4 To select refrigerant branch kits

RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
Total capacity index of
connected indoor units
15~62
63~149
150~182
Indoor unit capacity index
15~42
50
60
71
For piping example, refer to
Refnet joint at first branch (counting from outdoor unit)
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. Example: Refnet joint A→B‑1.
Outdoor unit capacity type (HP)
4~6
Refnet joints at other branches
For refnet joints other than the first branch, select the proper branch kit model
based on the total capacity index of all indoor units connected after the refrigerant
branch. Example: Refnet joint B‑1→C‑1.
Indoor unit capacity index
<182
Refnet headers
Concerning refnet headers, choose from the following table in accordance with the
total capacity of all the indoor units connected below the refnet header.
Indoor unit capacity index
<182
INFORMATION
Maximum 8 branches can be connected to a header.
Piping outer diameter size (mm)
Gas pipe
12.7
15.9
19.1
Piping outer diameter size (mm)
Gas pipe
9.5
12.7
15.9
"To select the piping size" [
Refrigerant branch kit
Refrigerant branch kit
Refrigerant branch kit
18 Piping installation
|
Liquid pipe
6.4
9.5
Liquid pipe
6.4
9.5
4
67].
KHRQ22M20T
KHRQ22M20T
KHRQ22M29H
Installer and user reference guide
69