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Installation instruction
Model
AW052MUCHA
AW072MUCHA
AW092MUCHA
AW112MXCHA
AW142MXCHA
AW162MXCHA
AW11NMXCHA
AW14NMXCHA
AW16NMXCHA
Minimum water volume description
The following part shows how to calculate the minimum water volume in the system for product protection (anti-hunting)
and temperature drop at defrosting.
1 Protective water volume for product
Ensure that the water volume is equal or greater than those shown below, in order to lower ON/OFF frequency of HAIER
unit at no load or extreme light load. When water volume is less than the volume indicated
(minimum water volume), compressor operation frequently stops at light load, which should result in shorter life or failure.
Mode
AW052MUCHA
minimum water
volume(L)
Mode
AW162MXCHA
minimum water
volume(L)
Water control
It is necessary to analyse the quality of water by checking pH, electrical conductivity, ammonia ion content, sulphur
content, and others. The following is the recommended standard water quality.
Content
Standard Quality pH(25°C)
Electrical conductivity {2}
Alcalinity
Sulphate
Alcalinity/Sulphate
Ammonium
Free chlorine
Hydrogen sulfide
Free carbon dioxide(aggressive)
Nitrate
Iron
Aluminium
Manganese
Chloride content
Total Hardness
Inlet/Outlet(inch)
R1
R1
R1
R1
R1
R1
R1
R1
R1
AW072MUCHA
30
35
AW11NMXCHA
80
55
HCO
AW092MUCHA
45
AW14NMXCHA
70
μS/cm
-
mg/l
HCO
3
mg/l
SO
2-
4
-
2-
mg/l
/SO
3
4
mg/l
NH
4
mg/l
Cl
2
mg/l
H
S
2
CO
mg/l
2
-
mg/l
NO
3
mg/l
Fe
mg/l
Al
mg/l
Mn
-
mg/l
Cl
mg/l
CaCO
3
21
AW112MXCHA
AW142MXCHA
55
AW16NMXCHA
80
Unit
Value
7.5-9
10-500
70-300
˂70
˃1
˂2
˂1
˂0.05
˂5
˂100
˂0.2
˂0.2
˂0.1
≤50
≤70
70
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