Connecting The Refrigerant Piping; About Connecting The Refrigerant Piping - Daikin VRV IV Q+ Series Installer And User Reference Manual

18 | Piping installation

18.2 Connecting the refrigerant piping

18.2.1 About connecting the refrigerant piping

Installer and user reference guide
80
If
≤2 m
a
>2 m
a
a To indoor unit
b Piping between outdoor units
NOTICE
There are restrictions on the refrigerant pipe connection order between outdoor
units during installation in case of a multiple outdoor unit system. Install according to
following restrictions. The capacities of outdoor units A, B and C must fulfill the
following restriction conditions: A≥B≥C.
A
a b c
a To indoor units
b Outdoor unit multi connecting piping kit (first branch)
c Outdoor unit multi connecting piping kit (second branch)
Before connecting the refrigerant piping, make sure the outdoor and indoor units
are mounted.
Connecting the refrigerant piping involves:
▪ Routing and connecting the refrigerant piping to the outdoor unit
▪ Protecting the outdoor unit against contamination
▪ Connecting the refrigerant piping to the indoor units (see the installation manual
of the indoor units)
▪ Connecting the multi-connection piping kit
▪ Connecting the refrigerant branching kit
▪ Keeping in mind the guidelines for:
- Brazing
- Using the stop valves
- Removing the pinched pipes
b
≤2 m
>2 m >2 m
b
≤2 m ≤2 m
B C
Then
VRV IV Q+ series heat pump
4P546229-1A – 2020.10
RXYQQ8~20U7Y1B