Introduction
This instruction manual provides essential information for the safe and efficient operation, installation, and maintenance of your Ariston Andris Mini Tank Electric Water Heater. Designed for versatility and compact spaces, this unit delivers hot water on demand, making it suitable for various applications including under-sink installations, RVs, and remote areas.
Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read this manual thoroughly before installing or servicing this water heater.
- Ensure the unit is installed by a qualified professional in accordance with all local codes and regulations.
- The 8-gallon model requires hard-wiring to a dedicated 120-volt circuit. Do not use extension cords or plug into shared outlets.
- Always turn off power to the unit before performing any maintenance or service.
- Install a pressure relief valve as specified in the installation instructions to prevent excessive pressure buildup.
- Water temperature can reach high levels. Exercise caution to prevent scalding.
Product Overview
The Ariston Andris Mini Tank Electric Water Heater is engineered for durability and efficiency. It features a titanium glass-lined tank for enhanced longevity and optimal heat retention. Its compact design allows for flexible placement in various settings.




Official Product Overview Video
This video provides a comprehensive overview of the Ariston Mini Tank Electric Water Heater, highlighting its features and benefits. (Source: Ariston)
Setup & Installation
The Ariston Mini Tank offers flexible installation options. It can function as a stand-alone unit for single-point-of-use applications or as a booster to an existing hot water system, ensuring immediate hot water at the faucet.




For detailed plumbing and electrical connections, refer to the official user manual PDF linked in the Support section. Ensure proper water supply connections (cold water inlet, hot water outlet) and install a pressure relief valve as required.
Operating Instructions
The Ariston Mini Tank is designed for simple operation. Once installed and filled with water, the unit will begin heating. The temperature can be adjusted using the dial located on the front of the unit.
- Temperature Adjustment: Rotate the dial to set your desired water temperature. The dial typically ranges from minimum to maximum heat settings.
- Energy Saving: For periods of extended absence, you can lower the temperature setting to save energy.
- The unit operates quietly, with minimal noise during the heating cycle.

Maintenance
Regular maintenance ensures the longevity and optimal performance of your water heater.
- Flushing the Heater: It is recommended to flush the heater 1-2 times a year to remove sediment buildup. This typically involves draining the tank through service valves. Consult the full user manual for detailed steps.
- Inspection: Periodically inspect the unit for any signs of leaks, corrosion, or damage to the connections.
- Cleaning: Keep the exterior of the unit clean and free from dust and debris.
Troubleshooting
If you encounter issues with your Ariston Mini Tank, consider the following common troubleshooting steps. For more complex problems, refer to the comprehensive troubleshooting guide in the official user manual.
- No Hot Water: Check the power supply to the unit. Ensure the circuit breaker has not tripped. Verify that the high-limit reset button (if applicable) has not been activated.
- Water Not Hot Enough: Adjust the temperature dial to a higher setting. Allow sufficient time for the water to heat.
- Leaks: Inspect all plumbing connections for tightness. If a leak persists, turn off the water supply and power to the unit and contact a qualified plumber.
Specifications
| Feature | Detail |
|---|---|
| Brand | Ariston |
| Model Number | ANDRIS RS 8U 1.4KW |
| Capacity | 8 Gallon |
| Voltage | 120 Volts |
| Wattage | 2000 watts |
| Product Dimensions (W x H) | 17.5"W x 17.5"H |
| Item Weight | 30.7 pounds |
| UPC | 763160007202 |
| Country of Origin | Italy |
Warranty Information
Ariston products are designed for high performance and durability, featuring components like the titanium glass-lined tank. For specific warranty terms and conditions, please refer to the official user manual or contact Ariston customer support directly. Retain your proof of purchase for warranty claims.
Support & Contact
For further assistance, detailed installation instructions, or troubleshooting, please refer to the official user manual PDF.
- Official User Manual (PDF): Download Here
- Ariston Store: Visit the Ariston Store on Amazon
- For direct support, please contact Ariston customer service through their official website or contact information provided with your product packaging.