QUOTE(Kyusuke_FD3S @ Aug 4 2020, 03:17 PM)
Is R410a piping can use for R32 aircond ?
Can but need to vacuum out all the old oil kau kau.
If old piping is R22 better to replace (pressure is higher for R410/R32)
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Otherwise, the expansion value or
capillary tube may become blocked with contaminants.
As an air conditioner using R32(R410A) incurs pressure higher than when using R22, it is
necessary to choose adequate materials.Thicknesses of copper pipes used with R32(R410A) are as shown in Table1.
Never use
copper pipes thinner than 0.8 mm even when it is available on the market.
Fujitsu_Installation_Guide_R32_Refrigerant_Models.pdf ( 2.64mb )
Number of downloads: 31