On Jan 14, 9:43*am, wrote:
I installed a humidifier recently on my furnace. *All mechanicals are
in a small closet, and the only way that the overflow tubing (3/8 ID
vinyl tubing) can be routed to the drain is over the furnace flue - so
gravity pulls the tubing into contact with the flue. *Since this gets
really hot (hot enough to melt the pipe wrap insulation I tried), I
need a method to keep the tubing from melting. *Any ideas? *I'd like
to avoid having to purchase and use mineral wool since I only need a
tiny bit and that stuff is pretty nasty. * Extra points for original
ideas! *Thanks everyone.

Cut the plastic tubing and use some soft copper in the high heat areas
and hose clamp the plastic to the copper well away from the hot flue.