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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.
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.
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.
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.
Refrigerant record form
Model
W1:
Refrigerant
charging
volume to
outdoor unit
in factory
W2:
Refrigerant
charging
volume to
outdoor
unit on site
W3: Refrigerant charging volume to
liquid pipe based on different piping
length calculation
Total
refrigerant
charging
volume on
site during
installation
W: Total
refrigerant
charging
volume
on site for
maintenance
Liquid pipe
diameter
(mm)
Additional refrigerant
amount
(kg)
AWAU-YWC220-H13
2kg
2.6kg
Ø
6.35
0.022kg/m×__m=__kg
W2+W3=
___kg
W1+W2+
W3=___kg
AWAU-YWC280-H13
2kg
2.6kg
Ø9.52
0.054kg/m×__m=__kg
AWAU-YWC335-H13
2kg
2.6kg
Ø
12.7
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
Installation procedure
GWP: 2088
The product contains fluorinated greenhouse gases and its functioning relies upon such gases.
