Avansa 700 W

Product detailed description

This backup power supply is designed for use in heating systems where a continuous power supply is critical to maintaining safe and efficient operation. Installers working with solid fuel boilers often rely on such units to maintain circulation and prevent overheating during mains failures. The Avansa 700 W is particularly useful in residential and commercial buildings equipped with circulators that require stable power. It is commonly installed in mechanical rooms, utility areas, or other controlled environments where access to the system is regular and conditions are suitable for electronic equipment.

For installers and technicians, the Avansa 700 W represents a reliable solution for integrating an uninterruptible power supply (UPS) into existing heating infrastructure. It is intended for use with circulators and similar low-power devices that require immediate power continuity. The unit is not suitable for high-power applications or as a general-purpose inverter. It is essential to size the connected battery correctly and ensure that the installation location allows for proper ventilation and heat dissipation to maintain performance and longevity.

Technical parameters

Installation and connection

The installation process requires careful planning and adherence to electrical safety standards. Begin by selecting a dry, well-ventilated location away from direct moisture and flammable materials. Ensure the space allows for unobstructed airflow around the unit to prevent overheating. Mount the unit securely and position it so that all connections can be made without strain on the cables.

Connect the external 12V DC battery first, ensuring correct polarity with red to positive and black to negative. Clean the battery terminals with a wire brush to remove corrosion before making the connection. Use metal connectors and tighten them with a wrench to ensure a secure fit. Next, plug the mains power cord into a grounded 230V, 50 Hz socket. Finally, connect the circulator or other device to the backup power supply’s output.

Common mistakes include incorrect battery polarity, which can damage the unit, and failing to provide adequate ventilation, which can lead to overheating. Always verify that the battery is fully charged before initial operation and that all cables are intact and properly insulated. Check that the battery voltage remains above 10.8V during operation to avoid triggering the low-voltage shutdown.

Compatibility and accessories

The Avansa 700 W is compatible with a range of heating circulators and small electrical devices that operate within its power limits. It is specifically designed for use with 12V DC lead-acid batteries, and the maximum supported capacity is 150 Ah. Users must purchase the battery separately, as it is not included with the unit. Lead-acid batteries are preferred due to their compatibility with the unit’s charging system. Gel batteries are not recommended, as they may not charge correctly and could reduce the lifespan of the backup power supply.

When designing a system, ensure that the selected battery has sufficient capacity to support the required runtime based on the load. For example, a 150 Ah battery can support a 350 W load for a limited duration, depending on the depth of discharge and efficiency of the unit. Additional accessories such as cable extensions or mounting brackets may be necessary depending on the installation environment, but these are not provided with the standard package.

Technical background for designers

The Avansa 700 W operates by converting mains electricity into stored energy in a 12V DC battery and then inverting that energy back into AC power when needed. The unit features a pure sine wave output, which mimics the waveform of standard mains electricity and is essential for the smooth operation of sensitive equipment like circulators. The voltage regulator (AVR) ensures that the output remains stable within the specified range, even under varying load conditions.

Constructed with materials suitable for long-term electrical operation, the unit is designed to withstand typical environmental conditions found in mechanical rooms. The internal components are engineered to handle the thermal stress associated with continuous operation. The switching time of less than 4 milliseconds is a key factor in maintaining uninterrupted operation during power failures. The design also includes overload and short-circuit protection mechanisms to safeguard both the unit and the connected devices.

Designers should consider the impact of ambient temperature on battery performance and lifespan. High temperatures can accelerate degradation, while low temperatures can reduce available capacity. Proper ventilation and insulation are therefore critical for optimal system performance. Additionally, the choice of battery type and capacity directly affects the backup duration and must be carefully calculated based on the expected load and runtime requirements.

Service and operation

Regular inspection of the unit and its connections is essential to ensure continued performance. Check the battery terminals periodically for signs of corrosion and clean them as needed. Verify that the battery voltage remains above 10.8V and that the unit is functioning correctly during power outages. Monitor the output voltage and frequency to ensure they remain within the specified ranges. If the unit emits an audible alarm, investigate the cause immediately, as this may indicate an overload, low battery, or other fault condition.

During routine service, ensure that all cables are secure and free from damage. Avoid exposing the unit to excessive dust or moisture, which can interfere with its operation. If the unit shuts down automatically due to overload or low battery, allow it to reset before attempting to restart. Do not attempt to bypass the safety features or operate the unit without a properly connected battery, as this can result in damage or failure.

Frequently asked questions

Can the Avansa 700 W be used with a 24V battery?
No, the unit is designed to work with a 12V DC battery only. Using a 24V battery would exceed the unit’s operational limits and could cause damage.

Is it possible to connect multiple devices to the Avansa 700 W?
Yes, but the total power consumption must not exceed 700 W. Inductive loads like pumps should not exceed 50% of the rated power to account for higher startup currents.

What happens if the battery voltage drops below 10.8V?
The unit will automatically shut down to protect the battery from over-discharge. This prevents permanent damage and extends the battery’s lifespan.

Can the unit be used as a general-purpose inverter?
No, the Avansa 700 W is specifically designed for heating circulators and similar low-power devices. It is not suitable for high-power or variable-load applications.

How does the unit handle power fluctuations?
The unit continuously monitors the mains voltage and frequency. If the input falls outside the acceptable range (150–270 VCA, 45–65 Hz), it will automatically switch to battery power without interruption.

What should be done if the unit emits a continuous alarm?
A continuous alarm typically indicates a low battery or overload condition. Check the battery voltage and load. If the issue persists, disconnect the load and investigate further.