To Connect The Refrigerant Branching Kit; To Protect Against Contamination; To Braze The Pipe End - Daikin VRV IV W+ Series Installer And User Reference Manual

18 | Piping installation

18.3.6 To connect the refrigerant branching kit

18.3.7 To protect against contamination

18.3.8 To braze the pipe end

Installer and user reference guide
86
For installation of the refrigerant branching kit, refer to the installation manual
delivered with the kit.
▪ Mount the refnet joint so that it branches either horizontally or vertically.
▪ Mount the refnet header so that it branches horizontally.
b
A
B
a Horizontal surface
b Refnet joint mounted vertically
c Refnet joint mounted horizontally
Protect the piping as described in the following table to prevent dirt, liquid or dust
from entering the piping.
Unit
Outdoor unit
Indoor unit
Seal the piping and wiring intake holes using sealing material (field supply),
otherwise the capacity of the unit will drop and small animals may enter the
machine.
If the gaps are not properly sealed, sound level will increase and sweat problems
can occur.
NOTICE
Precautions when connecting field piping. Add brazing material as shown in the
figure.
≤Ø25.4
1
1
c
a
a
Installation period
>1 month
<1 month
Regardless of the period
>Ø25.4
1
2 2
1
Protection method
Pinch the pipe
Pinch or tape the pipe
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10