Biasi Riva Combi Installation & Operation Instructions page 33

Wall hung gas boiler for central heating and domestic hot water supply

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14. Piping

All external piping components are to be supplied by the installer.

It is very important to use a hydraulic separator before secondary circulators.

BIASI RIVA COMBI BOILER

BOILER RETURN

HYDRAULIC

SEPARATOR

RIVA COMBI MANUAL - REV B

14.1 Primary – Secondary Piping:

BOILER SUPPLY

AIR

ELIMINATION

SECONDARY

CIRCULATOR

BACKFLOW

PREVENTOR AND

PRESSURE

REDUCING VALVE

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