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Frese OPTIMA Compact Frese Application Guide

Underfloor Speed Chiller

with PICV control - single circuit

Function

The room temperature is controlled by a room thermostat connected to the PICV actuator.

The temperature from the primary circuit is lowered by a heat injection circuit down to a maximum of 30°C.

Due to the slow response time of an underfloor heating system, it is normally controlled by a weather compensated room controller with an outside sensor.

The control characteristic will normally be linear.

Benefits

Considerations