30
ENGLISH
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Refrigerant pipe diameter from outdoor unit to first branch. (A)
* If the step up size is not available, you can not select the next higher size available.
Upward Out-
door unit
total capacity
Standard Pipe Diameter
Increased Pipe Diameter
When pipe length is 90 m or
more from ODU to 1st branch
When level difference is 50 m
or more
HP
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
8
Ø 9.52(3/8)
Ø 19.05(3/4)
Ø 12.7(1/2)
Ø 22.2(7/8)
Ø 12.7(1/2)
not increased
10
Ø 9.52(3/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 25.4(1)
Ø 12.7(1/2)
not increased
12 ~ 14
Ø 12.7(1/2)
Ø 28.58(1-1/8) Ø 15.88(5/8)
not increased
Ø 15.88(5/8)
not increased
16
Ø 12.7(1/2)
Ø 28.58(1-1/8) Ø 15.88(5/8)
Ø 31.8(1-1/4)
Ø 15.88(5/8)
not increased
18 ~ 22
Ø 15.88(5/8) Ø 28.58(1-1/8) Ø 19.05(3/4)
Ø 31.8(1-1/4)
Ø 19.05(3/4)
not increased
24
Ø 15.88(5/8)
Ø 34.9(1-3/8)
Ø 19.05(3/4)
not increased
Ø 19.05(3/4)
not increased
26 ~ 34
Ø 19.05(3/4)
Ø 34.9(1-3/8)
Ø 22.2(7/8)
Ø 38.1(1-1/2)
Ø 22.2(7/8)
not increased
36 ~ 48
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 22.2(7/8)
not increased
Ø 22.2(7/8)
not increased
Header Method
1 Outdoor Unit
Example : 6 Indoor Units connected
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch
Ⓒ
: Indoor Units
Ⓓ
: Sealed piping
2 Outdoor Units
Example : 6 Indoor Units connected
Ⓐ
: Outdoor Unit
Ⓑ
: Header branch
Ⓒ
: Indoor Units
Ⓓ
: Sealing
Ⓔ
: Connection branch pipe between Outdoor
units: ARCNN21
L 200 m
40 m
H 110 m
40 m
10 m or
less
L 110 m
L 200 m
40 m
Slave
Master
Slave
Master
Slave
Master
ODU Capacity
Master ≥ Slave
40 m
h1