Installation Manual
21
ENGLISH
• * : Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, calculation purpose
• ** : Indoor Unit should be installed at lower position than the header
Refrigerant piping installation
u
Y branch method
Refrigerant piping system
Example : 5 Indoor Units connected
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch (Y branch)
Ⓒ
: Indoor Units
L150m
l
40m
H 50m
h 15m
Ú
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 300m
Longest pipe length
* Equivalent pipe length
A+B+C+D+e ≤ 150m
A+B+C+D+e ≤ 175m
Longest pipe length after 1st branch
B+C+D+e ≤ 40m
Difference in height(Outdoor Unit
÷
Indoor Unit)
H ≤ 50m(40m:Outdoor unit is lower than Indoor Units)**
Difference in height (Indoor Unit
÷
Indoor Unit)
h ≤ 15m
L
l
H
h