Haier AU282AHBEA Service Manual page 210

Such means for disconnection must be incorporation in the fixed wiring
2. Pipe cutting and flaring
Be sure to carry out deburring after pipe cutting with a pipe cutter.
Insert flaring tool to make a flare.
A
Flaring tool
Correct
Lean Damaged flare Crack
Installation inspection and test run:
Please operate unit according to this Manual.
Items to be checked during test run. Please made a " "in " "
Are there any gas leakage?
How is insulation at piping connection carried out?
Are electric wires of indoor and outdoor unit firmly inserted into terminal block?
Is electric wiring of indoor and outdoor securely fixed?
Is draminage securely carried out?
Is earth line ( grounding ) securely connected?
Is power supply voltage abided by the code?
Is there any noise?
Is control display normal?
Is cooling operation normal?
Is room temp. regulator normal?
3.Calculation of refrigerant density
Calculation will be made according to the following methods:
1) Total refrigerant content of each system (kg) =content of 1 outdoor system + refilled refrigerant
Content of 1 outdoor system:Factory filled refrigerant
Refilled refrigerant:Filled content during installation according to the diameter and length of the
liquid piping.
2) Calculation of the minimum room sapce (m 3 ).
3) Calculation of refrigerant density
Total refrigerant content
Minimum room space
Liquid pipe 12.7mm (1/2")
Incorrect
Refrigerant density:0.3(kg/m 3 )
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Pipe dia. Dimension A(mm)
1.2 ~ 2.0
Partial Too outside