Circulation pump for efficient heating and cooling

The Grundfos MAGNA1 25-100 180 is an electronic circulation pump designed for use in heating, air conditioning and domestic hot water circulation systems. It is a simple yet efficient solution that allows for optimization of installation operation and reduction of energy costs. The pump is characterized by quiet operation and reliability, making it a good choice for both professional installers and end users.

Design and application

MAGNA1 is characterized by a wet-rotor motor, which eliminates the risk of leaks and ensures maintenance-free operation. The pump design minimizes hydraulic resistance, and the built-in controller allows for smooth speed adjustment, adapting the performance to the current needs of the system. This makes the pump operate efficiently even with variable heat or cooling demand. It finds application in:

• Central heating installations in residential and commercial buildings
• Air conditioning and cooling systems
• Domestic hot water circulation installations
• Heating systems with heat exchangers
• Systems powered by electricity with a voltage of 230V

Advantages and benefits

• Energy saving: Energy Efficiency Index (EEI) of 0.2 guarantees low electricity consumption.
• Quiet operation: The pump design minimizes noise, ensuring comfortable use.
• Simple installation and operation: The pump is easy to install and configure, which translates into time and cost savings.
• Durability: Made of high-quality cast iron (GG 20), resistant to corrosion and mechanical damage.
• Versatility: Possibility to adjust operating parameters to different types of installations.
• Maintenance-free: Thanks to the wet-rotor motor, the pump does not require additional lubrication or maintenance.
• Built-in switch: Provides additional safety of use.
• Wide temperature range: Operation in the range of -10°C to 110°C allows the pump to be used in various environmental conditions.

The MAGNA1 pump has threaded connections with a diameter of 1 ½ inches (40 mm) compliant with the BSPP standard, which facilitates integration with the existing hydraulic installation. The maximum working pressure is 10 bar, and the maximum head is 10 meters with a flow rate of up to 5.68 m³/h. The motor power consumption is 0.176 kW with a rated current of 1.42 A. The degree of protection IPX4 provides protection against splashing water. The connection length is 180 mm, which facilitates mounting in tight spaces.