TacoTherm Dual ZEPTO

Functional description

3.3.2 Heat exchanger

Fig. 17: Heat exchanger

3.3.3

3.3.3.1

Secondary circuit

Flow rate sensor

1

2

Primary circuit heat exchanger

Secondary circuit heat exchanger

The two copper-brazed heat exchangers (Fig. 17/1, 2) generate the

hot water for the heating circuit and the fresh water circuit.

To ensure that the domestic hot water has a temperature of 55 °C, the

water from the heating supply must have a temperature of at least

65 °C, depending on the required tap flow rate.

The flow rate sensor (Fig. 18) measures the flow rate, ensuring a con-

stant flow rate can be set in the control system for the taps, regard-

less of the pressure.

The flow rate sensor is already connected and set ex-works.

Fig. 18: Flow rate sensor

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Operating instructions

V03 06/2025 Item no. 215250 EA no. 1292