Daikin R32 Series User Manual

5 | Preparation
Installer reference guide
25
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
5.2.3 Refrigerant piping length and height difference
INFORMATION
For the Hybrid for Multi application and the DHW generator for Multi, see the indoor
unit installation manual for the maximum allowable refrigerant piping length and
height difference.
The shorter the refrigerant piping, the better the performance of the system.
The piping length and height differences must comply with the following
requirements.
Model Minimum required space
3MXM40, 3MXM52, 3AMXM52,
3MXF52, 3AMXF52
4.7m
2
3MXM68, 3MXF68 5.5m
2
4MXM68 6.5m
2
4MXM80 9.8m
2
5MXM90 10.4m
2
Shortest allowable length per room is 3m.
Outdoor unit Refrigerant piping length to
each indoor unit
Refrigerant piping total
length
3MXM40, 3MXM52,
3AMXM52,
3MXM68, 3MXF52,
3AMXF52, 3MXF68
≤25m ≤50m
4MXM68 ≤60m
4MXM80 ≤70m
5MXM90 ≤75m
Height difference
outdoor-indoor
Height difference indoor-
indoor
Outdoor unit installed
higher than indoor unit
≤15m ≤7.5m
Outdoor unit installed
lower than at least 1
indoor unit
≤7.5m ≤15m
5.3 Preparing refrigerant piping
5.3.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:

Daikin R32 Series Specifications

General

Brand	Daikin
Model	R32 Series
Category	Air Conditioner
Language	English