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Frese OPTIMA Compact Frese Application Guide

Condensing Boiler - Plant room

with PICV control

Function

The fully modulating boilers are connected to the controller which controls the flow through each boiler by the PICV.

The controller measures the inlet and outlet temperature to maximize Delta T and regulates the variable speed pump to maintain the required pump pressure.

For optimal boiler efficiency, the use of either cascade or unison control is recommended.

Benefits

Considerations