1. Introduction and Overview
This manual provides comprehensive instructions for the safe and efficient operation, installation, and maintenance of your Savio Acta 624 A GPL boiler. The Acta 624 A is a high-efficiency, combined traditional boiler designed for heating and domestic hot water production, featuring a compact design and sophisticated electronic controls.
Please read this manual thoroughly before installation or use and keep it for future reference. Proper installation and maintenance are crucial for the boiler's performance and your safety.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Refer to this manual. For assistance or additional information, consult a qualified installer, service agency, or the gas supplier.
- Installation and service must be performed by a qualified, licensed professional in accordance with all local codes and regulations.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Ensure adequate ventilation where the boiler is installed.
- Never obstruct the boiler's ventilation openings.
- The appliance is designed with IPX4D protection against water splashes, but it should not be directly exposed to water jets.
- In case of a gas leak, immediately shut off the gas supply, open windows, and evacuate the premises. Do not operate electrical switches or phones. Contact your gas supplier and a qualified technician.
3. Setup and Installation
The Savio Acta 624 A GPL boiler is designed for operation with LPG (Liquefied Petroleum Gas). Installation must be carried out by a certified technician.
3.1. Placement and Dimensions
The boiler's compact dimensions (Height: 703 mm, Length: 400 mm, Depth: 325 mm) allow for installation in various environments. It weighs approximately 30.7 kg.

Figure 1: Front view of the Savio Acta 624 A GPL boiler. This image shows the appliance's external design, highlighting its compact and minimalist aesthetic, suitable for various installations.
The Acta model can be installed outdoors in a protected location, utilizing appropriate protective measures (for sealed chamber models). This specific model is an open chamber, natural draft boiler.
3.2. Connections
All gas, water, and flue connections must comply with local regulations and be performed by a qualified installer. The boiler features a primary exchanger with copper fins (Savio patent) for efficient heat transfer and a plate sanitary exchanger for domestic hot water.

Figure 2: Technical diagram showing boiler dimensions and connection points. This diagram provides detailed measurements and identifies various inlets and outlets for water, gas, and flue, essential for proper installation planning.
The boiler is predisposed for remote control and an external probe for optimal air-propane operation via an optional kit.
4. Operating Instructions
The Savio Acta 624 A GPL boiler features a user-friendly electronic control panel for easy management of heating and hot water functions.
4.1. Control Panel Overview
The control panel includes intuitive dials for temperature regulation, a thermohydrometer for easy reading of system temperature and pressure, and an LED diagnostic light for instant verification of correct operation and fault diagnosis.
4.2. Key Functions
- Temperature Dials: Adjust the desired temperature for heating and domestic hot water.
- Electronic Control System: Allows adjustment of burner re-ignition frequency, pressure function, and an ignition test.
- Circulator Management: Features daily circulator operation, anti-freeze function, and post-circulation of the circulator.
- LED Diagnostic Light: Provides visual feedback on operational status, fault diagnosis, and lockout status.
- Recovery Button: Used to reset the boiler after a lockout or fault.
- Lockout Pilot Button: Indicates a system lockout.
- Hot Water Saving Button (ACS): Activates a mode to optimize domestic hot water consumption.
5. Maintenance
Regular maintenance is essential to ensure the long-term efficiency, safety, and reliability of your Savio Acta 624 A GPL boiler. It is recommended that the boiler be inspected and serviced annually by a qualified service technician.
- Annual Inspection: A qualified technician should check all components, including the burner, heat exchangers, safety devices, and flue system.
- Pressure Check: Monitor the system pressure using the thermohydrometer on the control panel. If the pressure is consistently too low or too high, contact a technician.
- Anti-freeze Function: The boiler includes an anti-freeze function to protect the system during cold temperatures. Ensure this function is active if the boiler is installed in an unheated area.
- Cleaning: Keep the exterior of the boiler clean and free from obstructions. Do not use abrasive cleaners.
6. Troubleshooting
The LED diagnostic light on the control panel provides indications for various operational states and potential faults. Refer to the following general troubleshooting steps:
- No Heat/Hot Water:
- Check if the boiler is powered on and the gas supply is open.
- Verify the system pressure on the thermohydrometer.
- Check the LED diagnostic light for any fault codes or lockout status.
- Boiler in Lockout:
- If the lockout pilot button is illuminated, press the Recovery Button to attempt a reset.
- If the boiler repeatedly locks out, contact a qualified technician.
- Unusual Noises:
- Minor operational noises are normal. However, if you hear loud or unusual sounds, switch off the boiler and contact a technician.
For persistent issues or complex fault codes, always consult a qualified Savio service technician.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Savio |
| Model | Acta 624 A |
| Fuel Type | LPG (Liquefied Petroleum Gas) |
| Thermal Load | 26.6 kW |
| Thermal Output | 24.1 kW |
| Dimensions (H x L x P) | 703 mm x 400 mm x 325 mm |
| Weight | 30.7 kg |
| Chamber Type | Open Chamber, Natural Draft |
| Primary Exchanger | Copper fins (Savio patent) |
| Sanitary Exchanger | Plates |
| Protection Rating | IPX4D |
| Bypass | Integrated Automatic Bypass |
| Hydraulic Group | Composite material (Savio patent) |
8. Warranty and Support
The Savio Acta 624 A GPL boiler comes with a real 2-year warranty valid across the national territory. This warranty covers manufacturing defects and ensures reliable operation under normal use conditions.
For warranty claims, technical support, or to schedule professional service, please contact your authorized Savio dealer or a certified service center. Always provide your boiler's model number (Acta 624 A) and serial number when seeking assistance.
Using non-original spare parts or unauthorized service personnel may void your warranty and compromise the safety and performance of your appliance.