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3.14 Piping Diagrams
3.14.1 S-plan piping diagram
3.14.2 Y-plan piping diagram
Pump
flow
2-port valve
(supplied)
Automatic
bypass
Radiators/
UFH
Heat
source
Pump
flow
2-port valve
(supplied)
Mid pos. valve
(not supplied)
Radiators/
UFH
Boiler
Automatic
bypass