Ariston PRO 1 ECO 100 Litre Electric Water Heater Instruction Manual

1. Product Overview

The Ariston PRO 1 ECO is a vertical wall-mounted electric water heater designed for efficient hot water supply. With a capacity of 100 litres and an ultra-slim diameter of 450 mm, it is suitable for installation in compact spaces. This model incorporates advanced features for energy saving and user convenience.

Figure 1: Front view of the Ariston PRO 1 ECO 100 Litre Electric Water Heater.

Key features include the Eco Evo function, which analyzes consumption habits to optimize heating, and WaterPlus technology, designed to provide up to 15% more hot water. The unit also features an Anti-Legionella disinfection cycle and an electronic thermostat for precise temperature control.

2. Safety Information

Please read all safety instructions carefully before installation and operation. Failure to follow these instructions may result in property damage, personal injury, or death.

• Professional Installation: Installation and maintenance must be performed by qualified personnel in accordance with local regulations and this manual.
• Electrical Safety: Ensure the electrical supply matches the specifications of the water heater. The unit must be properly grounded. Do not operate with damaged cables or plugs.
• Water Pressure: Ensure water pressure is within the recommended limits. Install a pressure relief valve if necessary.
• Temperature Control: Hot water can cause severe burns. Exercise caution when using hot water and consider installing thermostatic mixing valves.
• Anti-Dry Heating: The unit is equipped with protection to prevent the heating element from operating without water.
• Certifications: This water heater is certified compliant with French and European electrical and mechanical safety standards, and is CE certified.

3. Components Included

The following components are included with your Ariston PRO 1 ECO water heater:

• Insulating fittings (reference: 60003265)
• Cable glands (reference: 65113517)

4. Installation

The Ariston PRO 1 ECO water heater is designed for vertical wall mounting. Due to its ultra-slim design (450 mm diameter), it integrates well into small spaces such as utility rooms or cupboards.

Figure 2: The ultra-slim design of the Ariston PRO 1 ECO, highlighting its 450mm diameter and 100-litre capacity.

4.1 Mounting

1. Select a suitable wall location capable of supporting the full weight of the water heater when filled (approximately 124 kg for the 100L model).
2. Mark the drilling points for the mounting bracket. Ensure the unit is level.
3. Securely attach the mounting bracket to the wall using appropriate fasteners for your wall type.
4. Carefully lift and hang the water heater onto the mounting bracket.

Figure 3: Ariston PRO 1 ECO installed in a compact space, demonstrating its slim design. Optional InstaFix accessories are available for easier installation without drilling.

4.2 Plumbing Connections

1. Connect the cold water inlet (blue ring) and hot water outlet (red ring) to your plumbing system. Use the provided insulating fittings.
2. Install a safety group (pressure relief valve) on the cold water inlet as required by local regulations.
3. Ensure all connections are watertight.

4.3 Electrical Connection

1. Connect the water heater to a dedicated electrical circuit with appropriate overcurrent protection.
2. Ensure proper grounding.
3. Use the provided cable glands for secure wiring.
4. Verify that the voltage and power ratings match your electrical supply.

Always consult a qualified electrician and plumber for installation to ensure compliance with all local codes and safety standards.

5. Operation

The Ariston PRO 1 ECO features a user-friendly interface for controlling its functions.

Figure 4: Close-up of the control panel, showing temperature settings, ECO function button, and LED display.

5.1 Temperature Adjustment

• The desired temperature can be set using the controls on the front panel.
• An LED display provides real-time visualization of the heating temperature.

5.2 Eco Evo Function

• Activate the Eco Evo function to allow the water heater to analyze your hot water consumption habits.
• This intelligent function heats only the necessary volume of water, potentially leading to up to 15% savings on your hot water bill.

5.3 Anti-Freeze Mode

• The water heater automatically activates heating if the water temperature drops below 5°C, preventing freezing.

5.4 Anti-Legionella Function

• For hygiene purposes, the unit performs a complete heating cycle to 65°C once a day to disinfect the water and prevent bacterial growth, including Legionella.

Figure 5: Internal view illustrating the Anti-Legionella disinfection process at 65°C and the electronic thermostat for precise temperature control.

6. Maintenance

Regular maintenance ensures the longevity and efficient operation of your water heater. It is recommended that maintenance be performed by a qualified technician.

• Anode Inspection: The magnesium anode should be inspected annually and replaced as needed to protect the tank from corrosion.
• Descaling: Depending on water hardness, the heating element may accumulate scale. Periodic descaling can improve efficiency.
• Safety Valve Check: Periodically check the pressure relief valve to ensure it is functioning correctly.
• Cleaning: Keep the exterior of the water heater clean. Do not use abrasive cleaners.

7. Troubleshooting

The Ariston PRO 1 ECO is equipped with an auto-diagnosis feature to assist in identifying potential issues.

• Error Codes: If a malfunction occurs, an error code will be displayed on the control panel. Refer to the specific error code table (not provided in this manual, consult full product documentation or Ariston support) for diagnosis.
• No Hot Water:
  • Check the electrical supply and circuit breaker.
  • Ensure the temperature setting is appropriate.
  • Verify water supply is open.
• Insufficient Hot Water:
  • Allow sufficient time for reheating after heavy use.
  • Check for scale buildup (requires professional inspection).
• Leaks:
  • Immediately turn off water and electrical supply.
  • Inspect connections for tightness.
  • Contact a qualified plumber.

For complex issues or if error codes persist, contact Ariston customer support or a certified technician.

8. Specifications

Figure 6: Technical diagram showing the dimensions of the Ariston PRO 1 ECO water heater.

Figure 7: Energy label for Ariston PRO 1 ECO 100V 1.8K FR EU, indicating Class B energy efficiency.