Avansa 700 W + 55Ah battery

Product detailed description

Professional backup power supplies are essential components in modern heating systems, particularly those relying on solid fuel boilers. These systems often require continuous operation of circulators to maintain safe temperatures and prevent damage due to thermal stress. In residential and commercial buildings, especially those with off-grid or remote locations, power interruptions pose a significant risk to the integrity of the heating infrastructure. Installers working in such environments must ensure that critical components remain operational during grid failures. This backup power supply is specifically engineered for integration with heating systems where a stable and reliable secondary power source is required.

During normal operation, the primary power source maintains the function of the heating system. However, when the grid fails, the backup power supply automatically activates the battery to sustain the operation of connected devices. The transition between mains and battery power must occur rapidly and seamlessly to avoid disruption in the heating process. This is particularly important in systems involving water circulation, where even a brief interruption can lead to overheating or freezing. The design of this unit ensures minimal latency between power sources, allowing for the continued operation of critical components such as circulators and control systems.

Technical parameters

The main input range of 150–270 VAC allows the unit to operate in varying grid conditions, making it adaptable to different installation environments. The 55Ah battery provides sufficient runtime for most heating applications, though users can upgrade to compatible batteries with higher capacities if needed. The 700W maximum rated power ensures compatibility with standard circulators and control modules found in heating systems. The overload protection thresholds of 110% and 130% help prevent damage from sustained overloads or short-term spikes in demand. The 4ms switching time guarantees a nearly instantaneous response to power loss, which is crucial for maintaining system stability.

Installation and connection

Proper installation of a backup power supply involves several key steps to ensure both safety and performance. Begin by selecting a location that is dry, well-ventilated and free from dust or moisture. Ensure the area allows for adequate airflow around the unit to prevent overheating. Avoid placing the device near flammable materials or in areas exposed to direct sunlight or extreme temperatures.

Before connecting the battery, verify that the polarity is correct—red for positive and black for negative. Incorrect polarity can result in short circuits or permanent damage to the unit. Use metal connectors to secure the battery cables firmly, and ensure that the contacts are clean to reduce resistance and improve conductivity. After the battery is connected, plug the main power cord into a grounded outlet rated for 230V, 50Hz.

Connect the load (such as a circulator or control panel) to the output terminals of the backup power supply. Always follow the sequence: battery first, then mains, then load. This prevents unnecessary strain on the internal components. Check that all wiring is properly insulated and free from damage before energizing the system. Regularly inspect the connections for signs of wear, corrosion or overheating, especially at the battery terminals.

Common installation mistakes include using non-compatible batteries, failing to secure the battery connections tightly, or installing the unit in an environment with poor ventilation. These issues can lead to reduced performance, shortened battery life or even system failure. Always refer to the technical documentation for specific recommendations regarding battery types and installation conditions.

Compatibility and accessories

This backup power supply is designed to work exclusively with 12V DC batteries, with a maximum capacity of 150Ah. Lead-acid batteries are the recommended type, as the unit is configured to charge and manage these effectively. Gel batteries are not advised due to differences in charging profiles and potential risks of overcharging. The supplied 55Ah battery is a suitable baseline for most installations, but users may need to source additional batteries or larger-capacity options depending on the system requirements.

To integrate this unit into a heating system, ensure that the connected devices do not exceed the maximum power rating of 700W. Inductive loads such as water pumps may require additional consideration, as they typically draw more power during startup. Limiting their usage to approximately 50% of the available capacity helps prevent overload situations. Additional components such as fuses, circuit breakers or protective enclosures may be necessary depending on local regulations and the specific layout of the installation.

Technical background for designers

This backup power supply operates by monitoring the input voltage and switching to battery power when the grid fails or deviates beyond acceptable limits. The internal circuitry generates a pure sine wave output, ensuring compatibility with sensitive electronic devices commonly found in heating systems. This waveform mimics the characteristics of the mains supply, reducing the risk of interference or malfunction in connected components.

The unit is constructed using durable materials that resist heat and humidity, making it suitable for placement in mechanical rooms or utility areas. The design includes built-in protections against overloads, short circuits and low battery conditions. The cooling system relies on passive and active ventilation mechanisms to dissipate heat efficiently. Proper integration into the overall system requires consideration of the physical space, airflow and proximity to other electrical equipment.

The longevity and efficiency of the unit depend on factors such as ambient temperature, battery quality and the frequency of power interruptions. Maintaining the battery at optimal charge levels and avoiding deep discharge cycles extends its lifespan. Regular inspection and cleaning of the internal components help prevent dust accumulation, which can impede cooling and reduce performance over time.

Service and operation

Regular maintenance is essential to ensure the continued reliability of the backup power supply. While the unit does not require scheduled servicing at fixed intervals, periodic checks should be performed to assess the condition of the battery, wiring and internal components. Inspect the battery for signs of swelling, leakage or corrosion, and ensure that the terminals are clean and securely fastened. Replace the battery if its capacity falls below acceptable levels or if it shows signs of degradation.

During operation, monitor the unit’s status indicators to detect any anomalies such as frequent switching to battery mode or unusual noise from the internal fan. A rapid increase in the frequency of the audible alarm suggests that the battery is nearing the end of its usable life or that the load is drawing excessive power. If the unit shuts down unexpectedly, investigate the cause immediately to prevent further damage or safety hazards.

When troubleshooting, begin by verifying the integrity of the power connections and checking for loose or damaged wires. Test the battery using a multimeter to confirm its voltage and capacity. If the issue persists, consult the technical manual for further guidance. Avoid operating the unit in environments with high humidity or extreme temperatures, as these conditions can accelerate component degradation and reduce overall performance.

Frequently asked questions

Can the backup power supply be used with a 24V battery instead of 12V?
No, the unit is designed specifically for 12V DC batteries. Using a 24V battery would damage the internal electronics and void the warranty.

What happens if the battery is deeply discharged?
If the battery voltage drops below 10.8V, the unit will automatically disconnect the load to protect the battery from irreversible damage. The system will not restart until the battery is sufficiently recharged.

Is it possible to use a lithium-ion battery instead of a lead-acid battery?
No, the unit is optimized for lead-acid batteries. Lithium-ion batteries have different charging characteristics and are not supported by the internal charger circuit.

How long can the backup power supply run a 350W load on a 55Ah battery?
The runtime depends on the actual load and battery condition, but the system is designed to support appliances with a maximum combined power of approximately 350W continuously.

Can multiple backup power supplies be connected in parallel?
No, the unit is not designed for parallel operation. Each system must be independently connected to its own battery and load.

Does the unit support automatic voltage regulation for connected devices?
Yes, the voltage regulator (AVR) maintains a stable output voltage within specified limits, ensuring consistent performance of connected devices during both mains and battery operation.