Flexfiller Direct G4 is an intelligent automatic refill unit without a pump, designed for heating and cooling systems with an expansion vessel. Thanks to the electronic pressure sensor, graphic display, and microprocessor control, it can precisely maintain the desired pressure in the system. It is equipped with flood protection, leak detection function, and the possibility of connecting to a remote control system via MODBUS RTU or BACnet. It is ideal for commercial and larger installations where precise control and safe operation are required.

Features

• Silent refill unit without a pump
• Electronic pressure control with settings in 0.1 bar increments
• Password protected, service reminder on display (after 12 months)
• Max. flow rate 14 l/min (depending on the cold water supply pressure)
• Flood protection – refill time limitation, excessive flow alarm
• Liquid protection category 3
• Possibility of connection to drainage using fittings 22 mm (copper), 32 mm (Push Fit / PP according to BS 5254 / EN1451)
• Four status LED indicators, user-friendly graphic display
• Microprocessor control, self-learning logic
• Monitoring of expansion vessel and safety valve status
• Leak detection and water consumption monitoring
• Integrated operation log, protocols, counters, and maintenance alerts
• Communication protocols MODBUS RTU and BACnet via RS485
• Compatible with Flamconnect Remote (optional remote control)
• Power supply: 230 V / 0.3 A, protection class IP44
• Flexible hoses with insulation (2× 400 mm) included
• Colour: grey (RAL7016) & red (RAL3002)