Table of contents
TacoTherm Dual ZEPTO
V03 06/2025 Item no. 215250 EA no. 1292
Operating instructions
5
4.4 Storing the heat interface unit.......................................... 33
5
Assembly...................................................................................... 34
5.1 Requirements of the installation location........................ 34
5.2 Mounting the connecting rail............................................. 34
5.3 Mounting the heat interface unit....................................... 35
5.4 Connecting pipes................................................................ 36
5.4.1 Preparing the heat interface unit................................... 36
5.4.2 Connecting the drinking water pipes (hot and cold)..... 37
5.4.3 Connecting the primary connections for the heat
supply................................................................................ 38
5.4.4 Connecting the lines for the radiators or the under-
floor heating..................................................................... 38
5.4.5 Connecting the pressure relief line to the safety
valve.................................................................................. 39
5.5 Electrical installation.......................................................... 40
5.5.1 Connecting the heat interface unit to earth.................. 40
5.5.2 Connecting the main electrical cable............................. 40
5.5.3 Connecting the standby module..................................... 40
6
Shutting down in an emergency................................................. 41
7
Preliminary commissioning......................................................... 42
8
Final commissioning.................................................................... 45
8.1 Setting the differential pressure control valve................. 45
8.2 Handing over the heat interface unit to the operator...... 45
9
Installing and removing options................................................ 46
10 Cleaning and maintenance......................................................... 47
10.1
10.2
10.3
10.3.1
10.3.2
10.3.3
Safety during maintenance.............................................. 47
Overview of maintenance work........................................ 48
Maintenance work............................................................. 49
Cleaning the heat interface unit................................... 49
Cleaning the strainer..................................................... 50
Replacing a bolted connection or pipe........................ 51
11 Faults............................................................................................ 52
11.1 Safety when repairing faults............................................ 52
11.2 Fault repair........................................................................ 53
11.3 Replacing the heat exchanger......................................... 54
11.4 Replacing the pump.......................................................... 54
11.5 Replacing the backflow preventer................................... 55
11.6 Replacing the flow rate sensor........................................ 56
11.7 Replacing the temperature sensor.................................. 57
12
Spare parts................................................................................... 58
12.1
12.2
Ordering spare parts......................................................... 58
Spare parts list.................................................................. 58
