Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 228

L1: Liquid pipe with the total length of 22.22;
L2: Liquid pipe with the total length of 19.05;
L3: Liquid pipe with the total length of 15.88;
L4: Liquid pipe with the total length of 12.7;
L5: Liquid pipe with the total length of 9.52;
L6: Liquid pipe with the total length of 6.35;
Total refrigerant charging volume on site during installation=W2+W3
W: Total refrigerant charging volume on site for maintenance.
Refrigerant
Model
outdoor unit in
AV08IMWEWA
AV10IMWEWA
AV12IMWEWA
Note
:
• To prevent the oil going into the pipe, please use the special tool for R-410A, especially for gauge manifold and
charging hose.
• Mark the refrigerant type in different colours on the tank. R-410A is pink.
• Do not use the charging cylinder, because the R-410A will change when transferring to the cylinder.
• When charging refrigerant, the refrigerant should be taken out from the tank as liquid state.
• Mark the counted refrigerant volume due to the distributing pipe length on the label.
Heat insulation
Gas pipe and liquid pipe should be heat insulated separately. Liquid pipe shall be
heat insulated all the time and the only exception is when the customer is totally sure
the unit will only deliver COOLING.
The material for gas pipe should endure the high temperature over 120°C,
which for liquid pipe should be over 70°C.
The material thickness should be over 10mm. When ambient temp. is 30, and the
relative humidity is over 80%, the material thickness should be over 20mm.
The material should cling the pipe adhesively without gap, then be wrapped
with adhesive tape. The connection wire cannot be put together with the
heat insulation material and should be away from each other at
least 20cm.
Fix the refrigerant pipe
In operation, the pipe will vibrate and expand or shrink. If it isn't fixed, the refrigerant will focus on one part, which
will cause the pipe broken.
To prevent the central stress, fix the pipe for every 2-3m.
W1: W2:
Refrigerant
charging charging
volume to volume to
outdoor unit
factory on site
6kg 0kg
6kg 1kg
6kg 2kg
Refrigerant record form
W3: Refrigerant charging volume to liquid
pipe based on different piping length
calculation
Liquid pipe
Additional refrigerant amount
diameter
(mm)
Ø6.35 0.022kg/m×__m=__kg
Ø9.52 0.054kg/m×__m=__kg
Ø12.7 0.11kg/m×__m=__kg
Ø15.88 0.17kg/m×__m=__kg
Ø19.05 0.25kg/m×__m=__kg
Ø22.22 0.35kg/m×__m=__kg
W3=___kg
227
Total
refrigerant
charging
volume on
site during
(kg)
installation
W2+W3=
___kg
W: Total
refrigerant
charging
volume
on site for
maintenance
W1+W2+
W3=___kg