To Connect The Refrigerant Branching Kit; To Protect Against Contamination - Daikin VRV IV+ RYYQ8U7Y1B Series Installer And User Manual

17 | Piping installation

17.2.7 To connect the refrigerant branching kit

17.2.8 To protect against contamination

Installer and user reference guide
86
a
a Caution label
NOT allowed
Allowed
▪ Make sure that the total length of the piping connected to the joint is absolute
straight for more than 500 mm. Only if a straight field piping of more than
120 mm is connected, more than 500 mm of straight section can be ensured.
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
7.5°
A
7.5°
a
c
a
a
Installation period
>1 month
<1 month
Regardless of the period
B
Protection method
Pinch the pipe
Pinch or tape the pipe
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11