Haier MRV II - Page 26

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1.1.2 Outdoor pipe connection explanation
（take four outdoors in combination as an example）
1.1.3 Outdoor pipe size checking
Model
AU78N
MTAH
A
AU96N
MTAHA
AV16NMT
AHA
AV18NMT
AHA
AV20NMT
AHA
AV24NMT
AHA
AV26NMT
AHA
Capacity
（HP）
8 10 16 18 20 24 26
Gas pipe
(mm)
Φ28.5
8
Φ28.58
Φ38.1(Φ2
8.58×2)
Φ38.1(Φ2
8.58×2)
Φ38.1(Φ2
8.58×2)
Φ38.1(Φ2
8.58×3)
Φ44.5(Φ2
8.58×3)
Liquid
pipe
(mm)
Φ12.7 Φ12.7
Φ15.88(Φ
12. 7×2)
Φ15.88(Φ
12. 7×2)
Φ19.05(Φ
12. 7×2)
Φ19.05(Φ
12.7×3)
Φ22.22(Φ
12. 7×3)
Oil
equalizat
ion pipe
(mm)
—— —— Φ9.52 Φ9.52 Φ9.52 Φ9.52 Φ9.52
Balance
pipe
（mm）
—— —— Φ19.05 Φ19.05 Φ19.05 Φ19.05 Φ19.05
Part 2
Balance pipe ∮19.05
Balance pipe
∮19.05
To indoor
unit
Liquid pipe
gas pipe
Third gather pipe at
outdoor side
Third gather pipe at
outdoor side
Third gather pipe at
outdoor side
Lb
Ld
Lf
La
Lc
Le
Balance pipe ∮19.05
L1'
L2'
Oil equalization
pipe
∮9.52
Oil equalization
pipe
∮9.52
L3'
Oil equalization
pipe
∮9.52
L3 L2
SLAVE
UNIT
SLAVE
UNIT
SLAVE
UNIT
MASTER
UNIT
LA
L1