To Select Refrigerant Branch Kits - Daikin RXYSA4A7V1B Installer And User Manual

B: Piping between refrigerant branch kits
C: Piping between refrigerant branch kit and indoor unit

18.1.4 To select refrigerant branch kits

RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1A – 2020.07
Choose from the following table in accordance with the indoor unit total capacity
type, connected downstream. Do not let the connection piping exceed the
refrigerant piping size chosen by the general system model name.
Indoor unit capacity index
0≤x≤182
Example: Downstream capacity for B-1 = capacity index of unit 3-1 + capacity index
of unit 3-2
Use the same diameters as the connections (liquid, gas) on the indoor units. The
diameters of the indoor units are as follows:
Indoor unit capacity index
10~32
40~80
100~140
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
15.9
Piping outer diameter size (mm)
Gas pipe
9.5
12.7
15.9
"18.1.3 To select the piping
Refrigerant branch kit
Refrigerant branch kit
Refrigerant branch kit
18 Piping installation
|
Liquid pipe
9.5
Liquid pipe
6.4
6.4
9.5
size" [ 4 78].
KHRQ22M20T
KHRQ22M20T
KHRQ22M29H
Installer and user reference guide
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