Condensate Drain Pipe Insulation Thickness

In the new standard these tables are also reproduced in metric units.

Condensate drain pipe insulation thickness. T minimum insulation thickness. The thickness of pipe insulation for most common residential cold water pipes is 1 2 thick. An auxiliary drain pan with separate drain. B for insulation outside the stated conductivity range the minimum thickness t shall be determined as follows.

An auxiliary condensate drain pan at least 1 5 deep and at least 3 larger than the length width of the appliance beneath which it is placed using corrosion resistant material of adequate thickness 0 7mm galvanized metal or 1 6mm non metallic e g. Cold water pipes that have condensation problems can lead to health hazards such as mold and mildew growth in crawlspaces and unfinished basements. The table below indicates recommended insulation thickness. The values are in figures 1 and 2 complete with the footnotes.

Plastic with a separate drain installed under the equipment and discharged to a conspicuous point that will alert building occupants to a blocked primary condensate drain. The minimum pipe insulation thicknesses are given in two tables 6 8 3a and 6 8 3b in the standard. These thicknesses by 1 inch 25 mm shall be permitted before thickness adjustment required in footnote b but not to a thickness less than 1 inch 25 mm.