Avansa 25/4/180

Product detailed description

This circulation pump is commonly used in residential and industrial water distribution systems, including domestic cold and hot water circuits, air conditioning units, and industrial circulating equipment. It is designed for integration into systems where variable flow rates are required, such as in heating systems with multiple zones or in applications where energy efficiency is a priority. The pump's compact dimensions and lightweight construction make it suitable for installation in tight spaces, such as under sinks, in mechanical rooms, or within HVAC enclosures. The three-speed control allows for fine-tuning of performance to match system requirements, reducing unnecessary energy consumption while maintaining reliable operation across a wide range of temperatures and pressures.

The pump is particularly suited for environments where the pumped medium may vary in temperature, from -10°C to +110°C, making it appropriate for both heating and cooling applications. The IP44 rating ensures protection against dust and water splashes, allowing for installation in areas with moderate exposure to moisture. The asynchronous motor does not require external overload protection, simplifying electrical integration and reducing the need for additional components in the control circuit.

Technical parameters

Package dimensions (mm)	130/210/150
Maximum working pressure	10 bar
DN suction (mm)	25
DN discharge (mm)	25
Protection rating	IP44
Materials, pump parts	aluminium / plastic
Maximum flow rate (l/min)	48
Voltage (V)	230
Electrical motor power input	35/50/71 W
Connection dimensions	6/4 inch
Dimensions H x W x D (cm)	13.5 x 19.5 x 14.5
Construction length	180 mm
Temperature of pumped medium	-10 to +110°C
Insulation class	FH
Weight (kg)	2.7
Discharge head (m)	4
EAN	5949040800414
Code	AVANSA 25/4/180
Brand	AVANSA

The pump's key technical parameters include a maximum working pressure of 10 bar, a flow rate of up to 48 l/min, and a head of 4 m. These values are critical for determining the suitability of the pump for a given system. The three-speed operation allows for adjustment of flow and pressure to match the system's hydraulic requirements. The IP44 rating and insulation class FH indicate the pump's suitability for environments with fluctuating temperatures and moderate humidity, ensuring long-term reliability in typical installation conditions.

Installation and connection

The pump is equipped with DN 25 inlet and outlet ports, which correspond to 1 inch nominal pipe size. The connection dimensions are specified as 6/4 inch, meaning that the pump can be connected using either 6 mm or 4 mm threaded fittings, depending on the system configuration. During installation, it is essential to ensure that the pump is mounted in a stable position with proper support to prevent vibration-induced stress on the piping. The pump must be installed in a horizontal orientation to ensure proper suction and prevent air entrapment. The three-speed switch is located on the terminal block and must be configured according to the system's operational requirements before energising the unit. A common installation mistake is incorrect alignment of the pump with the piping, which can lead to leakage or reduced efficiency. It is also important to verify that the electrical supply matches the 230V rating and that the circuit is properly grounded.

Compatibility and accessories

The Avansa 25/4/180 is compatible with standard domestic and industrial water systems that operate within the specified temperature and pressure ranges. It can be used in conjunction with thermostatic valves, flow meters, and control panels to create a fully automated circulation system. For installations requiring higher flow rates or additional pressure, the Avansa 25/6/180 model is a suitable alternative. When installing this pump, it is recommended to include isolation valves on both the inlet and outlet sides to facilitate maintenance and system isolation. A pressure gauge and flow control device may also be necessary for monitoring and optimising system performance.

Technical background for designers

The pump operates on a centrifugal principle, where the impeller generates a pressure differential to move the fluid through the system. The asynchronous motor provides smooth and reliable operation without the need for additional protection devices. The cast aluminium body offers good thermal conductivity and resistance to corrosion, while the plastic components reduce weight and manufacturing costs. The pump is designed to integrate seamlessly into closed-loop systems, such as heating circuits and air conditioning units, where it can maintain consistent flow rates despite variations in load. The service life and efficiency of the pump are influenced by the quality of the installation, the cleanliness of the pumped medium, and the frequency of maintenance checks. Proper alignment and secure mounting are essential to prevent mechanical wear and vibration-related damage.

Service and operation

The pump requires minimal maintenance due to its robust design and the absence of moving parts that require lubrication. However, it is recommended to periodically inspect the pump for signs of wear, leakage, or unusual noise. The electrical connections should be checked for tightness and insulation integrity, particularly in environments with high humidity. The three-speed switch should be verified for correct operation, and the pump should be tested under load to ensure that it delivers the expected performance. No specific service intervals are provided in the technical data, but routine inspections are advised to ensure continued reliability and efficiency.

Frequently asked questions

Can the Avansa 25/4/180 be used in a heating system with multiple zones?
Yes, the pump can be used in multi-zone heating systems. The three-speed control allows for adjustment of flow and pressure to match the requirements of each zone, ensuring balanced distribution of heat.

Is the pump suitable for use with glycol-based fluids?
Yes, the pump is suitable for use with glycol-based fluids within the specified temperature range. The materials used in the pump's construction are compatible with glycol solutions, provided that the concentration and pH levels are within acceptable limits.

Can the pump be installed vertically?
No, the pump must be installed in a horizontal orientation to ensure proper suction and prevent air entrapment. Vertical installation may lead to reduced efficiency and potential damage to the internal components.

Does the pump require a separate overload protection device?
No, the asynchronous motor does not require external overload protection. The motor is designed to operate safely under normal and overload conditions without the need for additional protection devices.