1. Introduction
This manual provides essential information for the safe and efficient operation of your Baxi Acquaprojet 11 Fi Blue gas water heater. This instant gas water heater is designed for both indoor and outdoor installation, offering high sanitary comfort, energy savings, and user-friendly operation. Key features include electronic ignition, reduced NOx emissions (Class 6 EN 15502), and a digital LCD control panel for easy temperature adjustment and status monitoring. Please read this manual thoroughly before installation and use.
Figure 1: Baxi Acquaprojet 11 Fi Blue Gas Water Heater, front view.
2. Safety Information
Important: Installation, maintenance, and repair of this appliance must be performed by qualified and authorized personnel only, in accordance with local regulations and standards. Failure to comply with these instructions can result in serious injury, property damage, or death.
- Ensure adequate ventilation where the appliance is installed.
- Do not store flammable materials near the water heater.
- In case of gas odor, immediately shut off the gas supply, open windows, and contact emergency services. Do not operate electrical switches or phones.
- Regularly inspect the flue system for blockages or damage.
- Never attempt to modify the appliance or its components.
- Keep children and pets away from the appliance during operation.
3. Product Overview
The Baxi Acquaprojet 11 Fi Blue is a sealed chamber, forced draft instant gas water heater. It features a compact design and an intuitive control panel.
3.1 Control Panel
Figure 2: Detailed view of the control panel and display indicators.
- Display: Shows current status, temperature, and error codes.
- On/Off/Reset Button: Central button for powering the unit on/off and resetting anomalies.
- Temperature Adjustment Knob: Used to set the desired water temperature.
- Display Indicators:
- Anomaly presence (error code).
- Flame presence (flame symbol) or flame anomaly (crossed-out flame symbol).
- Water draw in progress.
- Set temperature value.
3.2 Technical Drawings and Connections
Figure 3: Front, side, top views, and hydraulic connections of the water heater. Dimensions are in millimeters.
This diagram illustrates the physical dimensions and connection points for water (IN/OUT), gas, and the flue system. Refer to these drawings for accurate installation planning.
4. Setup and Installation
Installation of the Baxi Acquaprojet 11 Fi Blue must be carried out by a certified professional. Ensure all local codes and regulations regarding gas and water heater installations are strictly followed.
- Location: Choose a suitable location, either indoors or outdoors, protected from freezing temperatures and direct weather exposure if installed outside.
- Mounting: The unit can be wall-mounted. Ensure the wall structure can support the appliance's weight (approximately 14 kg for the 11 Fi Blue model).
- Water Connections: Connect the cold water inlet and hot water outlet as indicated in Figure 3. Ensure proper sealing to prevent leaks.
- Gas Connection: Connect the gas supply line to the appliance's gas inlet. Use appropriate fittings and ensure a leak-free connection.
- Flue System: Install the flue pipe (Ø 60 mm coaxial or Ø 80/80 mm separated) for exhaust gas discharge. This appliance is a sealed chamber type, requiring a specific flue system.
- Electrical Connection: Connect the appliance to a suitable electrical supply for electronic ignition.
- Initial Startup: After installation, a qualified technician must perform the initial startup, checking for gas leaks, proper water flow, and correct operation of all safety devices.
5. Operating Instructions
Once installed and commissioned by a professional, operating your Baxi Acquaprojet 11 Fi Blue is straightforward.
- Power On/Off: Press the central button on the control panel (Figure 2) to turn the appliance on or off.
- Adjusting Water Temperature: Rotate the temperature adjustment knob (Figure 2) to set your desired hot water temperature. The LCD display will show the set temperature.
- Hot Water Delivery: Open a hot water tap. The appliance will automatically detect water flow (minimum 2 l/min) and ignite to provide hot water at the set temperature. The "water draw in progress" symbol will appear on the display.
- Monitoring Operation: The display provides real-time information:
- A flame symbol indicates successful ignition and operation.
- The set temperature is continuously displayed.
- In case of an anomaly, an error code will be shown (refer to the troubleshooting section or contact support).
6. Maintenance
Regular maintenance is crucial for the longevity, efficiency, and safe operation of your gas water heater.
- Annual Inspection: Have the appliance inspected and serviced annually by a qualified technician. This includes checking the burner, heat exchanger, flue system, gas connections, and safety devices.
- Cleaning: Keep the exterior of the appliance clean. Do not use abrasive cleaners.
- Water Quality: In areas with hard water, consider installing a water softener to prevent scale buildup, which can affect efficiency and lifespan.
- Flue System Check: Ensure the flue system is free from obstructions and damage.
- Frost Protection: If the appliance is installed in an area prone to freezing, ensure adequate frost protection measures are in place.
7. Troubleshooting
If your water heater is not functioning correctly, consult the following basic troubleshooting steps. For complex issues or error codes, contact a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Appliance not igniting |
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| Water not hot enough |
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| Error code displayed | Internal fault or safety lockout. | Note the error code, press the reset button. If the error reappears, contact a qualified technician, providing the error code. |
8. Specifications
Detailed technical specifications for the Baxi Acquaprojet 11 Fi Blue gas water heater.
Figure 4: Technical data table for 11 Fi Blue and 14 Fi Blue models.
| Feature | Specification (Acquaprojet 11 Fi Blue) |
|---|---|
| Model Number | Acquaprojet 11 Fi Blue |
| Manufacturer | Baxi |
| Type | Instant Gas Water Heater, Sealed Chamber, Low NOx ErP |
| Fuel Type | LPG (Gpl) |
| Nominal Thermal Power | 19.3 kW |
| Hot Water Production (ΔT=25°C) | 11 l/min |
| Energy Efficiency Class | A |
| NOx Emissions Class | 6 (according to EN 15502) |
| Ignition | Electronic with cable |
| Water Temperature Control | Electronic with NTC probe |
| Minimum Ignition Flow Rate | 2 l/min |
| Water Pressure (Min/Max) | 0.13 - 10 bar |
| Water Connection | 1/2" |
| Gas Connection | 3/4" |
| Flue Pipe Diameter | Coaxial Ø 60/100 mm or Separated Ø 80/80 mm |
| Dimensions (HxWxD) | 617 x 304 x 222 mm (with knob) |
| Weight | 14 kg |
| Electrical Supply | 230 V |
| Protection Degree | IPX5D |
Figure 5: Energy efficiency label for Baxi 11Fi Blue, indicating Class A rating.
9. Warranty and Support
For information regarding the warranty period and terms for your Baxi Acquaprojet 11 Fi Blue gas water heater, please refer to the documentation provided at the time of purchase or contact your authorized Baxi dealer or installer.
For technical support, service requests, or spare parts, please contact your local Baxi service center or the professional who installed your appliance. Always provide the model number and serial number of your unit when seeking support.
