TacoTherm Dual ZEPTO

Functional description

3.3.1.3 Expansion vessel

Fig. 10: Expansion vessel

3.3.1.4 Air bleed valve

Fig. 11: Air bleed valve for hot water

The expansion vessel (Fig. 10) permits the controlled expansion of the

water at a constant pressure while it is being heated.

The air bleed valves (Fig. 11) are used for bleeding and ventilation

when filling or draining the unit and the pipe networks connected.

3.3.1.5 Integrated heating circulation pump

The integrated heating circulation pump (Fig. 12) supplies the con-

nected radiators with the required heating water flow rate.

Fig. 12: Heating circulation pump

26

Operating instructions

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