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Installation Manual
Page
32
-One zone plumbing example-
primary/
secondary fitting
manifold station with
balancing & sight flow valves
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Secondary Circulator
Stiebel Eltron or Gundfos
circulator w/
internal check valve &
isolation flanges
Primary Circulator
Stiebel Eltron or Gundfos
circulator w/
internal check valve
isolation flanges &
purge valve
HS120
Modulating/
Condensing boiler
HYDRO SMART
pressure relief valve
pump controller
thermostat
air separators
supply pressure/ temp gauge
diaphragm type expansion tank
return pressure/temp gauge
y-strainer
tubing in concrete
gas regulator
Installation
* This diagram illustrates tankless micro-boiler design concepts only and does not accurately
represent to micro-boilers description.
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