Cetetherm Midi Wall TA
Installation, service and operating instruction
26
10 Options
The mounting instructions are described for a new installation. If the kits are supposed to be installed on an
already installed subsystem, you will have to release the water pressure and disconnect the electrical power
supply before starting. The installation must be carried out by a fully qualified electrician.
10.1 Safety thermostat
Heating systems sensitive to high temperatures for example under-floor heating must be equipped with a safety
thermostat. If the heating system is not equipped with the thermostat, the under-floor heating system and floors
in general might get damaged.
10.1.1 Installing the safety thermostat
1. Disconnect the substation electrical power supply cable. Disconnect the electrical
plug on the circulation pump.
2. Attach the safety thermostat electrical box on the mounting plate.
3. Connect the new power supply cable from the electrical box to the circulation pump.
4. Reconnect the existing power supply cable to the connection on the electrical box.
5. Attach the thermostat to the pipe for heating supply.
6. Set the correct maximum temperature value for the thermostat.
7. Attach all electrical wires with the necessary number of straps. It is important not to
attach electrical wires on primary heating pipes and sharp edges.
Picture 25
Set recommended settings for under floor heating systems.
10.2 3-point or 2+1-point HB metering
Mounting the 3-point HB metering:
1. Close the shut-off valves for primary inlet and return.
2. Unscrew the nut preceding the energy meter and remove energy meter and pipe.
3. Unscrew the nut following primary inlet and remove the filter and welding end.
4. Thread the metering profile into the frame´s.
5. Screw the metering and the central together.
6. Open the shut-off valves, first primary inlet then primary return.
Picture 27
Picture 26
