1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Ariston Akros Plus 14L GN Instantaneous Gas Water Heater. Please read this manual thoroughly before using the appliance and keep it for future reference. This appliance is designed to provide instantaneous hot water for domestic use.
Figure 1: Ariston Akros Plus 14L GN Instantaneous Gas Water Heater in a typical installation setting.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
General Safety Precautions:
- This appliance must be installed and serviced by a qualified professional in accordance with all local codes and regulations.
- Ensure adequate ventilation where the appliance is installed.
- Do not store flammable materials near the water heater.
- Regularly check for gas leaks. If you smell gas, immediately shut off the gas supply, open windows, and contact a qualified technician.
Integrated Safety Devices:
The Akros Plus water heater is equipped with several safety features to ensure reliable operation:
- Ionising Flame Detection: Automatically shuts off the device in case of failed ignition or lack of flame, preventing unburnt gas accumulation.
- Overheating Protection: A safety device against water overheating automatically shuts off the unit if the water temperature becomes too high, preventing scalding.
- Smoke Extraction Safety: Automatic shut-off of the device in case of exhaust gas clogging, ensuring safe operation and preventing carbon monoxide buildup.
3. Product Overview
The Ariston Akros Plus 14L GN is an instantaneous gas water heater designed for efficiency and comfort. It features a low NOx burner and precise temperature control.
Key Features:
- Low NOx Burner: Equipped with a burner that limits nitrogen oxide emissions, complying with environmental standards (ErP2018, CE).
- High Flow Rate: Delivers up to 14 liters per minute of hot water for optimal sanitary comfort.
- Precise Temperature Control: Electronic control via an LED interface and a high-precision thermostat ensure stable hot water temperature regardless of flow.
- Quiet Operation: Features a very quiet flame ignition system.
- Battery Powered: Operates on 2 LR20 batteries (included) with a visible level indicator on the control panel.
Figure 2: Dimensions of the Ariston Akros Plus 14L GN water heater. Height: 64.9 cm, Width: 37 cm, Depth: 21.1 cm.
Figure 3: Internal view highlighting the copper exchanger for optimized performance and longevity, and the 27kW burner capable of delivering 14L/min of water at 55°C. Designed for Natural Gas (GN).
4. Setup & Installation
Installation of the Ariston Akros Plus 14L GN water heater must be performed by a qualified and certified professional to ensure safety and compliance with local regulations.
Installation Requirements:
- Location: Choose a location with adequate ventilation and away from flammable materials.
- Gas Supply: The appliance is designed for Natural Gas (GN). Ensure the gas supply matches the appliance's requirements (Natural gas G20 or G25). Gas inlet connection is ½ inch (male).
- Water Connections: Water inlet and outlet connections are ½ inch (male). Ensure proper plumbing for hot and cold water lines.
- Exhaust: The nozzle diameter for exhaust is 130 mm. Ensure proper venting for combustion gases.
- Power Supply: The unit is powered by 2 LR20 batteries (included). Install these batteries into the designated compartment.
Initial Checks:
- After installation, a qualified technician must perform a leak test on all gas and water connections.
- Verify proper exhaust gas evacuation.
- Ensure the appliance is correctly configured for the local gas type.
5. Operating Instructions
The Ariston Akros Plus 14L GN features a user-friendly LED touch screen for easy control.
Control Panel:
Figure 4: The LED touch screen control panel. It displays the current water temperature and includes '+' and '-' buttons for adjustment, a 'RESET' button, and a battery level indicator.
Adjusting Water Temperature:
- Ensure the appliance is powered on (batteries installed).
- The LED screen will display the current water temperature.
- Use the + and - buttons on the control panel to adjust the desired hot water temperature.
- The appliance will automatically regulate the burner to achieve and maintain the set temperature.
Battery Level Indicator:
The control panel includes an indicator for the LR20 batteries. When the battery level is low, the indicator will alert you, signaling that the batteries need replacement to ensure continuous operation.
6. Maintenance
Regular maintenance is crucial for the safe, efficient, and long-lasting operation of your Ariston Akros Plus water heater.
Annual Professional Service:
It is a legal obligation and highly recommended that gas appliances, including this water heater, be serviced annually by a qualified and certified professional. This service typically includes:
- Inspection and cleaning of the burner and heat exchanger.
- Checking for gas and water leaks.
- Verification of safety devices (flame detection, overheating, exhaust).
- Checking and cleaning of the exhaust system.
- General operational check and performance optimization.
User Maintenance:
- Battery Replacement: Replace the 2 LR20 batteries when the low battery indicator appears on the control panel.
- Exterior Cleaning: Clean the exterior of the appliance with a soft, damp cloth. Do not use abrasive cleaners or solvents.
7. Troubleshooting
This section provides guidance for common issues. For complex problems or if you are unsure, always contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Appliance not igniting |
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| Water not hot enough |
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| Appliance shuts off unexpectedly |
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| Error code displayed | Specific malfunction | Refer to the detailed error code list in the full technical manual or contact a qualified service technician, providing the error code. |
8. Specifications
Technical details for the Ariston Akros Plus 14L GN Instantaneous Gas Water Heater.
| Feature | Specification |
|---|---|
| Model Name | Akros Plus |
| Model Number | 3632393 (also 4332013) |
| Dimensions (H x W x D) | 649 x 370 x 211 mm |
| Weight | 11.7 kg |
| Maximum Power | 27 kW |
| Minimum Power | 9 kW |
| Gas Type | Natural Gas (GN) G20 / G25 |
| Gas Consumption (G20) | 2.83 m³/h |
| Gas Consumption (G25) | 3.22 m³/h |
| Maximum Water Flow | 14 L/min |
| Minimum Water Flow | 3 L/min |
| Maximum Water Pressure | 10 bar |
| Minimum Water Pressure | 0.1 bar |
| Nozzle Diameter (Exhaust) | 130 mm |
| Gas Inlet Connection | ½ inch (male) |
| Water Inlet Connection | ½ inch (male) |
| Water Outlet Connection | ½ inch (male) |
| Power Source | 2 x LR20 batteries (included) |
| Energy Class | A |
Figure 5: Energy label indicating the appliance's efficiency class A and noise level of 62 dB.
9. Warranty & Support
Ariston is committed to providing reliable products and support.
Spare Part Availability:
EU Spare Part Availability Duration: 15 Years. This ensures that components for your water heater will be available for an extended period, supporting long-term use and repairability.
Legal Obligations:
The conformity of gas equipment must be certified (CC2 certificate). Gas appliances must be serviced annually by a qualified professional to maintain safety and warranty validity.
Contacting Support:
For technical assistance, service requests, or warranty claims, please refer to the contact information provided with your purchase documentation or visit the official Ariston website for your region.
Figure 6: Contents of the product packaging, including the user manual, warranty information, 2 LR20 alkaline batteries, and the energy label.
