3 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN21
Ⓖ : Header
Ⓗ : Sealing
F
E
ODU Capacity
Master ≥ Slave1 ≥ Slave2
40m(131ft)
h1
10m
(33ft)
or less
L 150m(492ft)(200m(656ft) : Conditional application)
40m(131ft)(90m(295ft) : Conditional application)
Branch pipe can not be used after header
Refrigerant pipe diameter from branch to branch (B,C)
Downward Indoor Unit
total capacity [kW(Btu/h)]
Liquid pipe [mm(inch)] Gas pipe [mm(inch)]
≤ 5.6(19,100)
Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
≤ 22.4(76,400)
Ø9.52(3/8) Ø19.05(3/4)
< 33.6(114,700) Ø9.52(3/8) Ø22.2(7/8)
< 50.4(172,000) Ø12.7(1/2) Ø28.58(1-1/8 )
< 67.2(229,400) Ø15.88(5/8) Ø28.58(1-1/8 )
< 72.8(248.500) Ø15.88(5/8) Ø34.9(1-3/8)
< 100.8(344,000) Ø19.05(3/4) Ø34.9(1-3/8)
< 173.6(592,500) Ø19.05(3/4) Ø41.3(1-5/8)
34
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
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