No. 4 , 5 of the cable you must connect to an external relay (similar relay see attached). This relay must be integrated in the external control box. If you need 400V, 220V or only 24 V depends to the control box. This relay send in work max. 2.5 V to electrical motor and check the temperature. If the temperature is higher than 130°C the relay will break the electrical power. It is a very important safety device. Because it is possible, that the motor will be in operation to hot and if you have then not PTC relay you will damaged the winding of the motor. In this case you need a new one but not for free from SUMA because it is a big fault of the customer.
6. No. 6, 7 you do not need to connect.
Please take sure, that the PTC relay send then only 2.5 V to the electrical motor. If you send 220 V to the motor you will damaged the complete winding.