Selection Of Refrigerant Branch Kits - Daikin RXYQ6BRY16 Installation Manual

The pipe thickness of the refrigerant piping shall
•
comply with the applicable legislation.
The minimal pipe thickness for R410A piping must
be in accordance with the table below.
Piping outer diameter size
(mm)
Ø6.4
Ø9.5
Ø12.7
Ø15.9
Ø19.1
Ø22.2
Ø25.4
Ø28.6
Ø31.8
Ø34.9
Ø38.1
Ø41.3
Ø44.4
In this case, the additional refrigerant calculation has to
be adjusted as mentioned in "14. Charging refrigerant".

9.3 Selection of refrigerant branch kits

For piping example, refer to "9.2 Selection of piping
size".
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).
Outdoor unit
capacity type (HP)
6~10
12~22
24~
For REFNET joints other than the first branch
•
(example REFNET joint b), select the proper branch
kit model based on the total capacity index of all
indoor units connected after the refrigerant branch.
Indoor unit
capacity index
x<200
200≤x<290
290≤x<640
x≥640
18
01_EN_3P748230-1.indd 18
Minimal thickness t (mm)
0.80
0.99
0.80
0.88
0.99
1.10
1.21
1.32
1.43
1.54
Refrigerant branch kit name
KHRP26A33T6
KHRP26A72T6
KHRP26A73T6
Refrigerant branch kit name
KHRP26A22T6
KHRP26A33T6
KHRP26A72T6
KHRP26A73T6
Concerning REFNET headers, choose from the
•
following table in accordance with the total capacity
of all the indoor units connected below the REFNET
header.
Total indoor unit
Refrigerant branch kit name (Header)
capacity index
x<200 KHRP26M22H or KHRP26M33H
200≤x<290 KHRP26M33H
290≤x<640 KHRP26M72H
x≥640 KHRP26M73H + KHRP26M73HP
(a) I f the pipe size above the REFNET header is
Ø34.9 mm or more, KHRP26M73HP is required.
INFORMATION
Maximum 8 branches can be connected to a
header.
How to choose an outdoor unit multi connection
•
piping kit.
Choose from the following table in accordance with
the number of outdoor units.
Number of outdoor units
2
3
NOTICE
Refrigerant branch kits can only be used with
R410A.
INFORMATION
The piping branch by REFNET joints is possible
in the downstream of REFNET headers.
Indoor unit total capacity at REFNET joints
according to the REFNET header are as follows.
REFNET header
Indoor unit
(Downstream of REFNET joint)
Refrigerant branch kit name
(Header)
KHRP26M22H or KHRP26M33H
or KHRP26M72H
KHRP26M73H + KHRP26M73HP ≤140
(a)
Branch kit name
BHFP22P1356
BHFP22P1686
REFNET joint
Indoor unit
Limit of indoor unit total
capacity index at REFNET joint
<50
23/01/2023 17:24:13