https://tanklessauthority.com/multiple-tankless-units-manifold-systems/
Using Multiple Tankless Units in Manifold Systems for High-Demand Applications
Manifold configurations — arrangements in which two or more tankless water heaters operate in a linked, coordinated system — represent the primary engineering...
manifold systemshigh demandusingmultipletankless
https://collaborate.princeton.edu/en/publications/autocorrelations-in-the-center-manifold-of-dissipative-systems/
Autocorrelations in the center manifold of dissipative systems - Princeton University
in thecentermanifoldsystemsprinceton