TacoTherm Dual ZEPTO

Preliminary commissioning

Filling the heating circuit

WARNING!

Risk of burns due to hot pipes!

NOTICE!

The way the heating circuit is bled is based

on the hygroscopic fibre disc principle. The

system therefore cannot be checked for

leaks using air.

Fig. 33: Fill and drain valves

9.

10.

11.

12.

Fill the heating circuit using the bypass (Fig. 33):

a) Open the heating flow line connection

b) Open the heating return line connection

To bleed the primary circuit, open the air bleed valve.

ð The primary circuit is filled and bled.

Check the tightness of all bolted connections.

To set the parameters, see Ä Chapter 8 ‘Final commissioning’

on page 45.

44

Operating instructions

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