Mechanical · M-YFCRZ

Refrigerant Pipe Penetration Through Wall

Materials

Elements

Walls Partitions Roofs Ceilings Floors / Slabs Waterproofing / Flashing Insulation Reinforcing Roof / Floor Openings

About this detail

An HVAC pipe penetrates a partition, ceiling, wall, roof, or floor construction centered within a minimum twenty-five gauge metal sleeve. A backer rod with a 1.5 PVF density maximum and resilient caulking seal the annular space at each end of the sleeve, with one-inch minimum clearance and two-inch minimum depth. The annular space includes one-hundred percent fill fiber glass insulation. The pipe remains unattached to the structure without wedges or mechanical ties to allow for positional changes from loading or system operation.

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