Fire Suppression Systems for Buses - UNECE R107 Fire Proof ACS Explosion Proof Fire Safety Barrier Non-plug-in Device ECE R107 Certified Vehicle Automatic Fire Suppression Systems - ECE... The installation of non-plug-in devices must be carried out by the respective network operator or by a registered specialist company, which will also assist you with the consent of the respective network operator for the installation of the device. Series 5000 Emergency Pressure Relief Vent - Hawkeye Industries Do not connect the product to the mains until the electric hot water reservoir is filled with water and the fitting has been properly connected.