36
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
• * : Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, cal-
culation purpose
• ** : To apply Conditional Application
• Indoor Unit should be installed at lower position than the header.
Total pipe length = A+B+C+a+b+c+d+e
≤
1,000m
L
Longest pipe length
*Equivalent pipe length
A+B+b
≤
150m(200m**)
A+B+b
≤
175m(225m**)
l
Longest pipe length after 1st branch
B+b
≤
40m(90m**)
H
Difference in height (Outdoor Unit
÷
Indoor Unit)
H
≤
110m
h
Difference in height (Indoor Unit
÷
Indoor Unit)
h
≤
40m
h1
Difference in height (Outdoor Unit
÷
Outdoor Unit)
h1
≤
5m
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 90m or
more from ODU to 1st branch
When level difference is 50m
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
WARNING
• It is recommended that difference of piping length for pipes connected to the Indoor Unit
is minimized. Performance difference between Indoor Units may occur.
• When the any one (or both ) of below conditions are satisfied, the diameter of main pipe
(A) must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
- The level difference (Outdoor unit
÷
Indoor unit) is 50m or more (Only liquid pipe is in-
creased)
!
Содержание Multi V ABRUV100LTS4
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