Daikin RYYQ8U7Y1B, Installer And User Manual

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17 | Piping installation
Installer and user reference guide
86
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
a
a
A B
7.5°
7.5°
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.
>120 mm
>500 mm
17.2.7 To connect the refrigerant branching kit
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.
A
B
±
3
0°
a
b
c
a
a Horizontal surface
b Refnet joint mounted vertically
c Refnet joint mounted horizontally
17.2.8 To protect against contamination
Protect the piping as described in the following table to prevent dirt, liquid or dust
from entering the piping.
Unit Installation period Protection method
Outdoor unit >1 month Pinch the pipe
<1 month Pinch or tape the pipe
Indoor unit Regardless of the period