Rinnai M060C Installation And Operation Manual page 54

Rinnai requires 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.
54
Boiler Return
Rinnai M-Series Condensing Boiler Combi Manual
Low Loss Header