On 4 May 2004 09:34:02 -0700, (Sam) wrote:

but do the two pipes operate at the same temperature?
and yes they are touching,copper to copper, physically alongside each
other inside the foam.

Hi,

No, the liquid carrying 'flow' pipe from the outdoor unit condenser is
likely to be warmer than the gas carrying 'return' pipe from the
indoor unit evaporator.

This should not a problem if they are in contact as the colder the
liquid in the flow pipe the better. However some air con units allow
some expansion on the liquid in the flow pipe at the condenser which
could make it colder than the return.

So it would be best to see what the manufacturer says or ask on that
forum I gave the URL of.

cheers,
Pete.