Daikin VRV 5 RXYA8A7Y1B, Installer And User Manual

Page: 94 / 200

18 | Piping installation
Installer and user reference guide
94
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
▪ 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 Refrigerant branch kit
<200 KHRQ22M20TA (inch)
KHRQM22M20T (mm)
200≤x<290 KHRQ22M29T9 (inch)
KHRQM22M29T (mm)
290≤x≤650 KHRA22M65T (inch)
KHRAM22M65T (mm)
▪ 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 Refrigerant branch kit
<290 KHRQ22M29H (inch)
KHRQM22M29H9 (mm)
290≤x≤650 KHRA22M65H (inch)
KHRAM22M65H (mm)
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 Model name
2 BHFA22P1007 (inch)
BHFAM22P1007 (mm)
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 Equalising pipe Ø (mm)
5~12 19.1
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
18.1.6 Installation limitations
The illustration and table below show the installation limitations.