We have just attended an R32 training course and posed the question in regard to indoor units and the use of flares inside the room.

In some install manuals the manufacturers ask for the flares to be made outside of the room and in others, from the same manufacturer there is no such stipulation.

We received a reply that there is no special requirement (legislation?) for the location of the flare connections, so the only reason would be for a product requirement.

We will continue to cut the flares off on wall mounted fan coils and then braze, but on other fan coil types that is not so easy, so until we hear different we will use the flares on those with very short stubs outside the units.

Comments?