Midea MFA-96CRN1 Technical Manual page 130

R410A 50Hz Tropical Split AC
NOTE:
When welding the refrigerant pipe, in order to prevent internal oxidation of the pipe, nitrogen must be filled in. Otherwise, the
oxidized chips may block refrigerating circulatory system.
3.5.1 Size of Outdoor Unit Pipes and Piping Methods
1) Size of outdoor unit pipes and piping methods
Model
MOV-76CN1-C
MOV-76HN1-C
MOV-96CN1-C
MOV-96HN1-C
MOV-120CN1-C
MOV-120HN1-C
2) Allowed length of refrigerant pipe and height difference (Fig-22)
130
Fig-21
Gas side
Φ22
Φ22
Φ25
Φ25
Φ28.6
Φ28.6
Outdoor unit
Max. pipe length L 50m
Indoor unit
Fig-22
MCAC-UTSM-2012-12
Liquid side
Φ9.52
Φ9.52
Φ9.52
Φ9.52
Φ12.7
Φ12.7