The hot water tank replacement system must be a modular, floor-mounted solution designed for the replacement of three 5,000-liter insulated tanks in designated buildings. The system is intended for in... The hot water tank replacement system must be a modular, floor-mounted solution designed for the replacement of three 5,000-liter insulated tanks in designated buildings. The system is intended for indoor installation and must comply with CE certification standards. Each tank must be suitable for domestic hot water production and feature advanced corrosion protection and insulation. For additional details, please see the attached Sources Sought document.