Refrigerant Line Insulation Thickness

This also applies to the need for epdm on insulated coils line sets going to the fan coils.

Refrigerant line insulation thickness. If liquid lines pass through a space that is warmer than the refrigerant i e. What are the new pipe and duct insulation thickness requirements in standard 90 1 2010. 99 get it as soon as wed sep 30. However in some cases where humidity is high over 80 percent a 1 inch thickness may be used.

2 hot pipes require. The thickness required for low temperature pipes like refrigerant and chiller water is less than higher temperature pipes and smaller pipes require less insulation as well 1 in general refrigerant suction lines and chilled water pipes require either 1 2 or 1 insulation depending on the size and temperature of the pipes. Overall this is good news giving mechanical insulation an opportunity to contribute to greater building energy efficiency. Liquid lines generally are insulated.

There are two refrigeration circuits each with a liquid line supplying liquid refrigerant from the condenser to a tx valve adjacent to the evaporator and a suction line returning refrigerant gas from the evaporator to the suction connections of the compressor. There is a double suction riser on one of the circuits. Mandated changes in refrigerants are resulting in colder line temperatures which require increased insulation thickness to prevent condensation. In our photo at above left where refrigerant line insulation is incomplete the drip stains on the attic floor may well indicate a point at which leak.

If it was all vrv vrf manufacturer s would require 2 1 2 on the high pressure lines. Missing or damaged refrigerant line insulation insulation on the refrigerant lines particularly on the larger suction line will cause condensation and drips from the lines in humid areas. 1 4 5 8 insulated copper coil line set seamless pipe tube for hvac refrigerant 1 2 white insulation ez twin set 35 long 167 99 167. They are warm to hot 110 f 43 3 c for air cooled.

Two different diameter copper refrigerant lines one approximately 1 4 second 3 4 diameter depends on your system size and distances run between the air conditioning system condensing unit house exterior and the ac coil a coil named after its shape. Refrigerant line insulation is partially responsible for the efficiency of your air conditioning system operation. Pipe insulation thicknesses are greater than or equal to those in the 2007 standard but duct insulation thicknesses have not changed. In typical conditions a 1 inch thickness is the standard.