AUX ANB66FVAMT - 3.4 Determination method of pipe and branch pipe

AUX-DC inverter ARV outdoor unit individual series technical manual
99
3.4 Determination method of pipe and branch pipe
 Selecting type of refrigerant pipe
Type of pipe
Connecting parts
No.
Main pipe
between outdoor unit and the 1
st
. branch pipe
1
between branch pipe and branch pipe
2
Branch pipe
between branch pipe and indoor unit
3
 Diameter of pipe 1 depends on pipe specification of outdoor unit.
Length between 1st IDU branch and Farthest Outdoor unit ＜90m
Total capacity of out
-door unit（kW）
Gas side(mm)
liquid side(mm)
The 1st Branch pipe
61.5, 67kw
φ28.6
φ15.88
/
73,78.5,85,90kw
φ34.9
φ19.05
/
Length between 1st IDU branch and Farthest Outdoor unit ≥90m
Total capacity of out
-door unit（kW）
Gas side(mm)
liquid side(mm)
The 1st Branch pipe
61.5, 67kw
φ34.9
φ19.05
/
73,78.5,85,90kw
φ38.1
φ19.05
/
 Diameter of pipe “2” depends on the total capacity of indoor unit connected below.
Total capacity of indoor unit（kW）
Gas side(mm)
liquid side(mm)
selection of Branch pipe
0≤Q＜11.2
φ15.88
φ9.52
AFG-00B
11.2≤Q＜18
φ19.05
φ9.52
AFG-00B
18≤Q＜36
φ22.2
φ12.7
AFG-12B
36≤Q＜71
φ28.6
φ15.88
AFG-24B
71≤Q＜104
φ34.9
φ19.05
AFG-34B
104≤Q＜138
φ38.1
φ19.05
AFG-50B
Note:
1. The 1
st
. Branch pipe should be based on thecapacity of outdoor unit,