What sized corrugated stainless steel tubing should be installed to get 248000 BTU of undiluted propane to an appliance 82 feet away?

To determine the appropriate size of corrugated stainless steel tubing (CSST) for delivering 248,000 BTU of undiluted propane over a distance of 82 feet, it is essential to consider both the gas flow requirements and the pressure drop that occurs over that distance. The BTU rating indicates how much energy is needed, and the distance indicates how far that energy must be transported.

For propane, the capacity of the tubing is influenced significantly by its diameter and the material properties. Tubing size 37 (EHD) is likely designed to handle the specified BTU load within the given distance without compromising the pressure and flow needed for optimal appliance operation. Sizing must account for both the initial BTU requirement and the total length of the run; in this case, 82 feet is a considerable distance that necessitates a size that can maintain sufficient flow.

Smaller sizes would not have adequate capacity to transport that amount of propane efficiently over the specified length, resulting in a pressure drop that could lead to inadequate fuel supply at the appliance end. Thus, size 37 (EHD) balances the need for sufficient flow with the distance, facilitating appropriate performance for the appliance while maintaining safety standards.

In summary, the selection of tubing size