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Refrigerant piping work
f Install the refrigerant pipe within the maximum allowable length, difference in height and length of after the first branch
f
pipe .
f The pressure of the R-410A is high .
f
Use only rated refrigerant pipe and follow the installation method .
f Use clean refrigerant pipe Where there is no harmful ion, oxide, dust, iron content or moisture .
f
f Use adequate tools and accessories for R-410A .
f
Manifold gauge
• Use manifold gauge only for R-410A to prevent the inflow of foreign substances .
• Use vacuum pump with check valve to prevent pump oil from flowing backward while the vacuum
Vacuum pump
• Use the vacuum pump that the vacuum induction is available up to 5Torr . (-100 . 7 kPa)
Flare nut
• Use only flare nut supplied with the product .
Allowable length of the refrigerant pipe and the installation examples
f AE090JXEDEH, AE120JXEDEH, AE140JXEDEH, AE160JXEDEH, AE090JXEDGH, AE120JXEDGH, AE140JXEDGH,
f
AE160JXEDGH
Outdoor unit
Maximum
allowable
Outdoor unit
length of
~ Hydro unit
pipe
Maximum
Outdoor unit
allowable
~ Hydro unit
height
Additional refrigerant
calculation
Contact the manufacturer if the length should exceed .
pump is stopped .
Item
Less than
Total length
50 m
Less than 30 m
R=Basic charge + additional charge by the piping length
ENGLISH-25
Example
a ≤ 50 m
is located lower
H1
Remarks
If outdoor unit
position H1
≤15 m
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