Hydraulic Separation; Examples Of Hydraulic Separation - Rinnai I Series Installation And Operation Manual

Rinnai recommends hydraulic separation between the boiler and central heating system. Hydraulic
separators allow for no pump curve matching or flow calculation; this is ideal for multi-temperature
and multi-zone systems.

Examples of Hydraulic Separation

Closely spaced tees and low loss headers are common examples of hydraulic separators and can be
used to separate the boiler loop from the central heating loop.
Closely Spaced Tees
Boiler Supply
Distance no
more than four
pipe diameters
IMPORTANT
For closely spaced tee installations, the
separation at the header is to be no
more than four pipe diameters.
Rinnai I-Series Condensing Boiler Combi Manual
Boiler Return
Low Loss Header
57