16
f
Install the refrigerant pipe within the maximum allowable length, difference in height and length of after the
first branch pipe.
f
The pressure of the R-410A is high.
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
Use adequate tools and accessories for R-410A.
Manifold gauge
• Use manifold gauge only for R-410A to prevent the inflow of foreign substances.
Vacuum pump
• Use vacuum pump with check valve to prevent pump oil from flowing backward while the
vacuum pump is stopped.
• Use the vacuum pump that the vacuum induction is available up to 5Torr. (-100.7kPa)
Flare nut
• Use only flare nut supplied with the product.
Allowable length of the refrigerant pipe and the installation examples
f
AEX060EDEHA,
Outdoor unit
Item
Example
Remarks
Maximum
allowable
length of
pipe
Outdoor unit
~ Hydro unit
Total length
Less than
30m
a ≤ 30m
Maximum
allowable
height
Outdoor unit
~ Hydro unit
Less than 20m
H1
Additional refrigerant
calculation
R=Basic additional charge by the piping length
Contact the manufacturer if the length should exceed.
Refrigerant piping work
