The Ariston AURES MULTI is an instantaneous electric water heater designed for multi-point installation, providing hot water on demand. This manual serves as an essential guide for its safe installation, operation, and maintenance.
Function Description:
The AURES MULTI is a flow-activated instantaneous electric water heater. It heats water only when there is a flow through the appliance, specifically requiring at least 2.1 liters per minute to activate the Instant Heating System. Users can regulate the hot water temperature by adjusting the power setting knob, choosing from four options: 'O' (heating element off), 'I' (only the 1st heating element switches on), 'II' (only the 2nd heating element switches on), and 'III' (both 1st and 2nd heating elements switch on, working together). This allows for flexible control over the water temperature based on user preference and external conditions. The appliance is designed for closed outlet construction, meaning it can supply hot water to multiple outlets simultaneously.
Important Technical Specifications:
The AURES MULTI, specifically model M 9.5 240V EU, operates with a power of 9.5 kW at 240V. It is a mono-phase unit designed for multi-point installation. The frequency is 50/60 Hz, and the electrical current is 39.6 A. It features an IP25 water protection rating, indicating protection against solid objects larger than 12.5 mm and against water jets from a nozzle. The pipe connection is 1/2" BSP.
Key performance metrics include a minimum water flow of 2.1 l/min and a maximum water pressure of 800 kPa (8 bar). The Qelec (kWh) is 2.224, and the load profile is XS. The noise level (Lwa) is 15 dB, and the nwh (water heating energy efficiency) is 39%. The rated volume is 0.45 liters, and the unit weighs 2.2 kg. Its compact dimensions are 304 mm (width) x 220 mm (height) x 110 mm (depth).
The product conforms to international electrical safety standards IEC 60335-1 and IEC 60335-2-35, and relevant EC Directives including LVD (EN 60335-1, EN 60335-2-35, EN 60529, EN 62233, EN 50106), EMC (EN 55014-1, EN 55014-2, EN 61000-3-2, EN 61000-3-3, EN 61000-3-11, EN 61000-3-12), and ERP (Eu812, Eu814, EN50193-1-2013). For the UK market, it also conforms to Electromagnetic Compatibility Regulations 2016, Electrical Equipment (Safety) Regulations 2016, Ecodesign for Energy-Related Products and Energy Information (Amendment) (EU Exit) Regulations 2019, and Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012.
The recommended cable for the M 9.5 240V EU model is H05VV-F 3x6mm² with a recommended fuse rating of 40A. For installations in the UK where the cable runs longer than 10 meters, a 10mm² cable is required. The operating water pressure range is 50-800 kPa (0.5-8 bar).
Usage Features:
The AURES MULTI is designed for ease of use with a simple power knob for temperature adjustment and a power LED indicator. It requires a separate electrical supply and must be connected to a separate circuit breaker. A Ground Fault Circuit Interrupter/Earth Leakage Circuit Breaker is required in the circuit for safety. The appliance must be properly grounded.
For optimal performance, a pressure relief valve (supplied with the product) must be installed correctly before the inlet pipe, and a flow control restrictor (AERATOR) is required at the sink or shower outlet. The water inlet must be connected directly to a cold water mains supply. The unit should be installed in a heated location to prevent freezing.
Maintenance Features:
Regular maintenance is crucial for the longevity and efficient operation of the AURES MULTI. Users are advised to periodically clean the spray head to ensure smooth water flow and to clean the incoming water filter. In case of issues, a troubleshooting guide is provided, covering common problems such as insufficient hot water, water too hot, heater switching off, water ceasing to flow, and fluctuating water temperature. Solutions range from adjusting flow rate and temperature settings to checking the mains stop valve, cleaning filters, and inspecting electrical connections. For persistent problems or complex repairs, a qualified electrician or authorized distributor should be contacted.
The appliance is equipped with a thermostat that acts as a safety device to prevent dangerous overheating. Any repairs, maintenance, plumbing, and electrical connections must be performed by a competent person using original spare parts only. The product is designed for easy access for maintenance, with a removable cover secured by two screws.
The product conforms to Directive WEEE 2012/19/EU, indicating that at the end of its working life, it should be disposed of separately from normal domestic household waste at a dedicated waste disposal center for electrical and electronic appliances, or returned to the retailer when purchasing a new replacement product. This ensures proper recycling and environmental protection.
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