Daikin VRV IV User Manual

18 | Piping installation
Installer and user reference guide
81
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
If Then
>2m
a
≤2 m ≤2 m
≥200 mm ≥200 mm
b
>2 m >2 m
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 B C
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)
18.2 Connecting the refrigerant piping
18.2.1 About connecting the refrigerant piping
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
18.2.2 Precautions when connecting the refrigerant piping
NOTICE
Make sure the field piping and connections are NOT subjected to stress.

Daikin VRV IV Specifications

General

Type	Variable Refrigerant Volume (VRV)
Series	VRV IV
Refrigerant	R410A
Energy Efficiency	High
Operating Temperature Range (Cooling)	-5°C to 46°C
Operating Temperature Range (Heating)	-20°C to 15.5°C
Installation	Professional installation required
Control	Centralized control system
Indoor Unit Options	Various types including ceiling cassette, wall-mounted, ducted, and floor-standing
Power Supply	380-415V, 3-phase, 50Hz