To pipe a boiler, attach the appropriate elbows and joints to key sections from the primary valves based on any number of central configuration pattern for the water loops, such as one-pipe loops, monoflow trees and primary-secondary loops. Each system provides the boiler with different advantages and disadvantages, and begins with preparing the piping equipment.
When piping the heater, avoid piping a header into a tee at the header's end. For efficient flow, headers should always end in elbows, and if they are piped at a tee, the steam and water moves through the header and rushes too forcefully against the tee at the header's end. When this happens, a large part of the moisture rushes back to the steam, and the wet steam causes noises and lowers efficiency, resulting in more expensive fuel bills.
If you need the steam to branch out into two directions at the end of a header, avoid using a tee by breaking the tee up into a threading with two systems instead. Install another header next to the original one, and have the two end in an elbow, with the two facing opposite directions. Pipe these into the main line, and make sure that there are at least 6 inches of space away from the last header to equalize the pressure and avoid damage to the system.