Installation Limitations - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

18 | Piping installation

18.1.6 Installation limitations

Installer and user reference guide
94
▪ 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.
Indoor unit capacity index
<200
200≤x<290
290≤x≤650
▪ 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
<290
290≤x≤650
INFORMATION
Maximum 8 branches can be connected to a header.
▪ How to choose an outdoor multi connection piping kit. Choose from the
following table, in accordance with the number of outdoor units.
Number of outdoor units
2
For multi combination of models RXYA8~12 + RYMA5 there is an additional
equalising pipe (in addition to the conventional gas and liquid piping).
The equalising pipe connections for the different modules are mentioned in below
table.
RXYA8~12 + RYMA5
5~12
There is never a connection of the equalising pipe with the indoor units.
Example: Multi combination RXYA8 + RXYA12
Ø19.1 mm Ø19.1 mm
Only the equalising pipe is shown
The illustration and table below show the installation limitations.
Refrigerant branch kit
KHRQ22M20TA (inch)
KHRQM22M20T (mm)
KHRQ22M29T9 (inch)
KHRQM22M29T (mm)
KHRA22M65T (inch)
KHRAM22M65T (mm)
Refrigerant branch kit
KHRQ22M29H (inch)
KHRQM22M29H9 (mm)
KHRA22M65H (inch)
KHRAM22M65H (mm)
Model name
BHFA22P1007 (inch)
BHFAM22P1007 (mm)
Equalising pipe Ø (mm)
19.1
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12