Each appliance’s input is determined by the manufacturer, then stamped on a rating plate, and permanently affixed to the equipment. The architectural drawing will be needed to identify the locations. In many jurisdictions the only meter pressure available for a residential service is now 2 psig. In other cases, propane may be supplied from a storage container.

Knowing the following details will also help you properly size the piping system. A drawing of the whole gas piping system allows you to identify and locate important system components and create a materials list.