Mini Split Heat Pump Mitsubishi. Rigid Metal Conduit. 

Some remodeling projects require setup metal ducts. Most commonly, this is due to the relocation of land records or wall. If the section is being replaced or moved is less than 5 feet (150 cm), change it to a flexible conduit instead of rigid metal plate. Flexible ducts are installed faster because they require multiple elbows or offsets if the pipes change direction.

Mini Split Heat Pump Installation. Flexible Ducts.

Disassemble the pipe section that wish to replace sheet metal with a flexible conduit. Loosen the screws on each seam metal plate and remove the piece of conduit. Measure the length of the flexible conduit must have. Add the required tolerance for the measurement of the flexible conduit. Cut the flexible pipe to the required length. Using a knife or cutting lines through the outer coating, insulation and the inner cover. Short reinforcing wire with a wire cutter.

Minisplit Heat Pump. Insulation.

Removing the outer layer and the insulation at each end. Lining slides between 1.5 to 2 inches (4-5 cm) over the pipe end. Wrap a flange around the inner lining and strap to secure tightly to the lining of the duct. Tighten the tensioning tool. Repeat with the other end of the liner on the other line

Unroll the insulation and siding gently at each end to completely cover the inner lining. Wrap a flange around the outer shell and the insulation and cinch tightly. Tighten the tensioning tool. Repeat the same process on the other end. After securing the lining of the conduit seals with a piece of aluminum foil tape. This will help reduce air leaks in the connecting point.