1. Introduction
This manual provides essential information for the safe and efficient operation of your Immergas Victrix Tera 24KW Condensing Boiler. It is crucial to read and understand all instructions before installation, operation, or maintenance. Keep this manual in a safe place for future reference.
Product Overview
The Immergas Victrix Tera 24KW is a high-efficiency condensing boiler designed for domestic heating and hot water production. Its advanced technology ensures optimal performance and energy savings.

Figure 1: Front view of the Immergas Victrix Tera 24KW Condensing Boiler, showing the control panel and pressure gauge. This image illustrates the compact design and user interface of the unit.
2. Safety Information
Safety is paramount when dealing with gas appliances. Failure to follow these instructions could result in property damage, personal injury, or death.
- Professional Installation: This appliance must be installed by a qualified and certified professional in accordance with all local and national regulations.
- Ventilation: Ensure adequate ventilation in the installation area as required by local codes. Do not obstruct air vents.
- Gas Leaks: If you smell gas, do not operate electrical switches, light matches, or use any flame. Immediately open windows and doors, evacuate the building, and call your gas supplier or fire department.
- Carbon Monoxide: Install carbon monoxide detectors in your home. Carbon monoxide is an odorless, colorless gas that can be fatal.
- Maintenance: Regular maintenance by a qualified technician is essential for safe and efficient operation.
- Children and Pets: Keep children and pets away from the boiler.
- Water Pressure: Regularly check the system water pressure as indicated on the boiler's gauge.
3. Setup
Installation should only be performed by a qualified heating engineer.
Pre-Installation Checks:
- Verify that the boiler type (methane) matches the available gas supply.
- Ensure the installation site complies with all relevant building and safety regulations.
- Check that all necessary connections (gas, water, electrical, flue) are accessible and correctly sized.
Installation Steps (Summary for reference):
- Mounting: Securely mount the boiler to a suitable wall using the provided template and fixings. Ensure it is level.
- Flue System: Install the flue system according to manufacturer's instructions and local regulations for safe exhaust of combustion products.
- Hydraulic Connections: Connect the heating flow and return pipes, domestic hot water inlet and outlet, and condensate drain. Ensure all connections are watertight.
- Gas Connection: Connect the gas supply line to the boiler's gas inlet, ensuring a gas-tight seal and proper isolation valve installation.
- Electrical Connection: Connect the boiler to the main electrical supply via a fused spur, following the wiring diagram in the full installation manual.
- Filling and Purging: Fill the heating system with water and thoroughly purge air from the system. Check for leaks.
- Commissioning: A qualified engineer must perform the initial commissioning, including gas pressure checks, combustion analysis, and functional tests.
4. Operating Instructions
Once installed and commissioned by a professional, operating your Immergas boiler is straightforward.
Control Panel Overview:
The boiler features a digital display and several buttons for adjusting settings. Refer to the detailed diagram in the full manual for specific button functions.
Basic Operation:
- Power On/Off: Use the main power switch (usually located near the boiler) to turn the unit on or off. The display will illuminate when powered on.
- Heating Temperature Adjustment: Use the '+' and '-' buttons, typically marked with a radiator icon, to set your desired central heating temperature.
- Domestic Hot Water (DHW) Temperature Adjustment: Use the '+' and '-' buttons, typically marked with a tap icon, to set your desired domestic hot water temperature.
- Operating Modes: The boiler may have different operating modes (e.g., Summer, Winter, Auto). Select the appropriate mode using the mode selection button.
- System Pressure Check: Regularly observe the pressure gauge on the boiler. The optimal pressure range is typically between 1.0 and 1.5 bar when the system is cold. If the pressure drops below 1.0 bar, repressurize the system using the filling loop (refer to the full manual for detailed instructions).
Error Codes:
If an issue occurs, the boiler's display may show an error code. Note down the code and consult the troubleshooting section of this manual or the comprehensive error code list in the full Immergas manual. Do not attempt repairs yourself; contact a qualified technician.
5. Maintenance
Regular maintenance ensures the longevity, efficiency, and safe operation of your Immergas boiler.
- Annual Professional Service: It is mandatory to have your boiler serviced annually by a Gas Safe registered (or equivalent national standard) engineer. This service includes checking combustion, gas pressure, safety devices, and cleaning components.
- System Pressure: Periodically check the system pressure on the boiler's gauge. If it consistently drops, there may be a leak in the system that needs professional attention.
- Cleaning: Keep the exterior of the boiler clean using a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure air vents are clear of obstructions.
- Frost Protection: If the boiler is installed in an unheated area, ensure the frost protection function is active (if available) or take appropriate measures to prevent freezing during cold periods.
- Condensate Drain: Ensure the condensate drain pipe is not blocked and is free-flowing.
6. Troubleshooting
Before calling a service technician, you can perform some basic checks for common issues.
| Problem | Possible Cause | Solution |
|---|---|---|
| No heating or hot water | No power, low system pressure, thermostat setting too low, gas supply off. | Check power supply, check pressure gauge and repressurize if needed, adjust thermostat, ensure gas valve is open. |
| Low system pressure | Minor leak, system not adequately filled. | Repressurize the system using the filling loop. If pressure drops frequently, contact a qualified technician for leak detection. |
| Boiler making unusual noises | Air in the system, limescale build-up, pump issue. | Bleed radiators to remove air. For persistent noises or suspected limescale, contact a qualified technician. |
| Boiler displaying an error code | Internal fault, sensor issue, component failure. | Note the error code. Attempt to reset the boiler (refer to full manual). If the code persists, contact a qualified Immergas service technician, providing the error code. |
Important: For any issue not resolved by these basic steps, or if you are unsure, always contact a qualified and certified heating engineer. Do not attempt complex repairs yourself.
7. Specifications
Key technical specifications for the Immergas Victrix Tera 24KW Condensing Boiler:
| Manufacturer | Immergas |
| Product Dimensions (L x W x H) | 40 x 30 x 76 cm |
| Item Model Number | 3027368 |
| Size | SMALL |
| Color | Bianco (White) |
| Style | 24 kW |
| Quantity of Items | 1 |
| Included Components | Boiler |
| Batteries Included | No |
| Batteries Required | No |
| Weight | 36 Grams |
| Spare Parts Availability | Information unavailable on spare parts |
| Date First Available on Amazon.com.be | 25 April 2022 |
| Discontinued by Manufacturer | No |
8. Warranty and Support
Your Immergas Victrix Tera 24KW Condensing Boiler is covered by a manufacturer's warranty. The specific terms and duration of the warranty may vary by region and purchase date. Please refer to the warranty card included with your product or visit the official Immergas website for detailed information.
Customer Support:
For technical assistance, spare parts, or warranty claims, please contact your authorized Immergas dealer or a certified service center. Ensure you have your boiler's model number (3027368) and serial number ready when contacting support.
For general inquiries, you may also visit the official Immergas website or consult their local distributors for contact information.





