Altech 15-Liter Electric Water Heater

1. Introduction

This manual provides essential instructions for the safe installation, operation, and maintenance of your Altech 15-liter electric water heater, Model 3100453. This compact unit is designed for convenient over-sink installation, providing hot water for domestic use. Please read this manual thoroughly before installation and use, and retain it for future reference.

2. Safety Information

Important Safety Instructions:

• Installation and maintenance must be performed by qualified personnel in accordance with local regulations and this manual.
• Ensure the electrical supply matches the specifications of the water heater (230V mono).
• The appliance must be properly grounded to prevent electric shock.
• Do not operate the water heater if it is damaged or malfunctioning.
• Never block the pressure relief valve.
• Keep flammable materials away from the water heater.
• Before any maintenance, disconnect the power supply to the unit.

3. Package Contents

Verify that all components are present and undamaged before proceeding with installation:

• Altech 15-Liter Electric Water Heater (Model 3100453)
• Dielectric fittings (supplied)
• Instruction Manual
• Mounting hardware (may vary, check packaging)

4. Product Overview

Familiarize yourself with the main components of your water heater:

Figure 1: Front view of the Altech 15-liter electric water heater. The white casing houses a central control panel with a rotary knob for temperature adjustment and a red indicator light, which illuminates during heating. The Altech brand logo is prominently displayed.

• Temperature Control Knob: Used to set the desired water temperature.
• Heating Indicator Light: Illuminates when the heating element is active.
• Water Inlet/Outlet: Connections for cold water supply and hot water output.
• Pressure Relief Valve: A safety device to release excess pressure.

5. Installation (Setup)

Note: Installation should only be carried out by a qualified plumber or electrician.

5.1 Mounting Location

• The unit is designed for over-sink installation.
• Choose a location that can support the weight of the water heater when full (approx. 15 kg + 7.1 kg = 22.1 kg).
• Ensure adequate clearance for maintenance and ventilation.
• Avoid locations exposed to freezing temperatures.

5.2 Water Connection

• Connect the cold water supply to the inlet and the hot water outlet to the tap.
• Use the supplied dielectric fittings to prevent galvanic corrosion.
• Install a pressure relief valve on the cold water inlet line, ensuring it is properly drained.
• Flush the system to remove any debris before connecting the water heater.
• Fill the water heater completely with water before connecting to the electrical supply.

5.3 Electrical Connection

• Ensure the power supply is disconnected before making any electrical connections.
• Connect the water heater to a dedicated 230V mono circuit with appropriate overcurrent protection.
• The appliance must be properly grounded.
• Follow all local electrical codes and regulations.

6. Operation

6.1 Initial Start-up

• Ensure the water heater is completely filled with water. Open a hot water tap to allow air to escape until water flows steadily.
• Connect the electrical power supply.
• Turn the temperature control knob to the desired setting. The red indicator light will illuminate, indicating that the heating element is active.

6.2 Temperature Adjustment

Rotate the control knob on the front panel to adjust the water temperature. Higher settings provide hotter water. For energy efficiency and safety, avoid excessively high temperatures.

6.3 Heating Cycle

The water heater will automatically heat the water to the set temperature. The indicator light will turn off once the set temperature is reached and will cycle on and off as needed to maintain the temperature. The approximate heating time for the 15-liter capacity is 42 minutes from cold to maximum temperature.

7. Maintenance

Regular maintenance ensures optimal performance and extends the lifespan of your water heater. Always disconnect power before performing maintenance.

7.1 Annual Inspection

• Inspect the pressure relief valve for proper operation.
• Check for any signs of leaks around connections.
• Examine electrical connections for tightness and corrosion.

7.2 Descaling

Depending on water hardness, mineral deposits (scale) can accumulate inside the tank and on the heating element, reducing efficiency. Descaling should be performed periodically by a qualified technician. This involves draining the tank and cleaning the interior components.

7.3 Draining the Tank

If the unit will be out of use for an extended period or if there is a risk of freezing, the tank should be drained. Disconnect power, close the cold water inlet valve, open a hot water tap, and open the drain valve (if present) or disconnect the cold water inlet to allow the tank to empty.

8. Troubleshooting

Before contacting service, review the following common issues and solutions:

If the problem persists after attempting these solutions, please contact a qualified service technician.

9. Specifications

10. Warranty and Support

Warranty Information:

• The tank is covered by a 3-year warranty.
• All other parts are covered by a 2-year warranty.
• Please retain your proof of purchase for warranty claims.

For technical assistance, warranty claims, or to locate authorized service centers, please refer to the contact information provided with your purchase documentation or visit the official Altech website.