Wilo Yonos PICO 25/1-8-130 Circulating Pump

The Wilo Yonos PICO 25/1-8-130 circulator pump, reference 4215518, is a high-efficiency electronic wet-rotor pump designed for water circulation in heating and air conditioning systems. It offers a maximum flow rate of 4.4 cubic meters per hour, a maximum head of 7.6 meters, and a compact installation length of 130 millimeters.

Equipped with an ECM synchronous motor and integrated electronic control, it adapts its operation to the hydraulic requirements of the system. It allows selection of variable differential pressure, constant differential pressure, or constant speed with three curves, making it suitable for both radiator systems and underfloor heating circuits.

Wilo Yonos PICO 25/1-8-130 electronic circulator pump

The Wilo Yonos PICO is a maintenance-free wet-rotor circulator pump with threaded connection and continuous electronic differential pressure control.

Its compact 130-millimeter installation length between connections is especially suitable for installations where available space is limited, while maintaining the hydraulic performance corresponding to the 25/1-8 version.

Maximum flow rate of 4.4 cubic meters per hour

The pump reaches a maximum flow rate of 4.4 cubic meters per hour. The actual operating flow will depend on the system operating point, pressure losses, and the selected control mode.

Electronic control automatically adapts motor operation to avoid running permanently at maximum power when the circuit requires a lower flow rate.

Maximum head of 7.6 meters

The Yonos PICO 25/1-8-130 provides a maximum head of 7.6 meters, offering the capacity to operate in installations with high pressure losses within its operating range.

The final selection should be made taking into account the required flow rate and the differential pressure needed in the circuit.

Three control modes

Wilo allows different operating strategies to be selected in order to adapt the pump to the characteristics of each hydraulic system.

• Variable differential pressure: progressively reduces differential pressure as the requested flow decreases.
• Constant differential pressure: keeps the selected pressure value practically constant.
• Constant speed: allows selection between 3 fixed-speed operating curves.

For radiators and underfloor heating

The control modes can be selected according to the application. Wilo specifically provides configurations for radiator systems and underfloor heating, making pump commissioning easier.

In systems with thermostatic valves, variable differential pressure control can be used, while constant differential pressure is suitable for many underfloor heating installations.

LED display with operating information

The pump incorporates a segment LED indicator that allows the main parameters to be viewed directly from the front of the unit.

The display provides information on:

• Selected setpoint value.
• Current flow rate.
• Instantaneous power consumption.
• Fault codes.

This information makes both commissioning and inspection and maintenance tasks easier.

Control via Wilo green button

Configuration is carried out using the characteristic Wilo green button, from which the control mode and operating values can be selected.

The combination of the front control and LED display allows the main adjustments to be made directly on the pump.

Manual venting function

The Wilo Yonos PICO 25/1-8-130 includes a manual venting function designed to help remove air from the motor compartment.

This function is especially useful during first commissioning or after filling and maintenance operations on the circuit.

Automatic unlocking

The motor is anti-blocking and incorporates an automatic unlocking function that helps restore operation in certain situations.

The pump also features manual restart and integrated motor protection.

ECM synchronous motor

The pump uses a synchronous motor with ECM technology and integrated electronic power control. This technology makes it possible to vary motor speed according to the hydraulic needs of the circuit.

The speed range is approximately between 500 and 4,800 revolutions per minute.

Power consumption from 4 to 75 watts

Power consumption varies according to the selected operating point. Wilo specifies a minimum consumption of 4 watts and a maximum of 75 watts.

The motor rated power is 58 watts. Electronic control reduces consumption when flow or pressure demand decreases.

Energy efficiency index equal to or less than 0.23

The Yonos PICO 25/1-8-130 has an energy efficiency index equal to or less than 0.23.

The ECM motor and electronic control adapt energy consumption to the actual needs of the installation, avoiding continuous operation at a single speed.

Single-phase 230-volt power supply

The pump is designed for a single-phase 230-volt power supply with a 10 percent tolerance and can operate at frequencies of 50 or 60 hertz.

Electrical connection is made via the Wilo quick connector, developed to simplify wiring during installation and maintenance operations.

Fluid temperature between -10 and 95 degrees Celsius

The permitted pumped fluid temperature is between -10 and 95 degrees Celsius.

The allowed ambient temperature is between -10 and 40 degrees Celsius, with the maximum fluid temperature remaining at 95 degrees Celsius within the conditions specified by Wilo.

Maximum operating pressure of 10 bar

The pump supports a maximum operating pressure of 10 bar.

Wilo also specifies a minimum inlet height of 0.5 meters at 50 degrees Celsius and 3 meters at 95 degrees Celsius, values that must be respected to ensure suitable hydraulic conditions.

DN 25 connection and 130-millimeter installation length

The Yonos PICO 25/1-8-130 features threaded connections and a reduced length between fittings, making it easy to integrate into compact spaces.

• Pipe connection: G 1 1/2.
• Alternative connection: RP 1.
• Nominal diameter: DN 25.
• Length between threads: 130 millimeters.

The 130-millimeter installation length is one of the main differences compared with the 180-millimeter Yonos PICO 25/1-8 version.

Durable materials for heating and air conditioning

The pump combines different materials selected for use in closed hydraulic circuits:

• Pump housing: grey cast iron.
• Impeller: polypropylene reinforced with 40 percent glass fiber.
• Shaft: stainless steel.
• Bearings: metal-impregnated carbon.

Its wet-rotor construction eliminates the need for conventional maintenance of the rotor-bearing assembly within the operating conditions established by the manufacturer.

Integrated particle filter

Wilo specifies the inclusion of a particle filter as part of the pump's standard equipment.

This element is part of the internal design intended to promote reliable operation of the hydraulic assembly and motor.

IPX4D protection and class F insulation

The motor has an IPX4D protection rating and class F insulation.

The pump also complies with the electromagnetic compatibility standards indicated by Wilo and has CE, VDE and EAC approvals and markings.

Compact dimensions

The 130-millimeter model is designed to take up little space within the installation.

• Total length: 138 millimeters.
• Height: 102 millimeters.
• Width: 143 millimeters.
• Installation length: 130 millimeters.
• Approximate net weight: 1.8 kilograms.

Technical features of the Wilo Yonos PICO 25/1-8-130

• Brand: Wilo.
• Range: Yonos PICO.
• Reference: 4215518.
• Model: Yonos PICO 25/1-8-130.
• EAN: 4048482758503.
• Product type: electronic wet-rotor circulator pump.
• Application: heating and air conditioning.
• Maximum flow rate: 4.4 cubic meters per hour.
• Maximum head: 7.6 meters.
• Maximum operating pressure: 10 bar.
• Minimum fluid temperature: -10 degrees Celsius.
• Maximum fluid temperature: 95 degrees Celsius.
• Ambient temperature: between -10 and 40 degrees Celsius.
• Power supply: single-phase 230 volts, with 10 percent tolerance.
• Frequency: 50 or 60 hertz.
• Motor rated power: 58 watts.
• Minimum consumption: 4 watts.
• Maximum consumption: 75 watts.
• Minimum speed: 500 revolutions per minute.
• Maximum speed: 4,800 revolutions per minute.
• Energy efficiency index: equal to or less than 0.23.
• Control modes: variable differential pressure, constant differential pressure and constant speed with 3 curves.
• Display: segment LED indicator.
• Display information: setpoint value, current flow rate, power consumption and fault codes.
• Venting function: manual.
• Automatic unlocking: yes.
• Manual restart: yes.
• Integrated motor protection: yes.
• Anti-blocking motor: yes.
• Particle filter: yes.
• Electrical connection: Wilo quick connector.
• Hydraulic connection: G 1 1/2.
• Alternative connection: RP 1.
• Nominal diameter: DN 25.
• Installation length: 130 millimeters.
• Housing: grey cast iron.
• Impeller: polypropylene reinforced with glass fiber.
• Shaft: stainless steel.
• Bearings: metal-impregnated carbon.
• Protection rating: IPX4D.
• Insulation class: F.
• Total length: 138 millimeters.
• Height: 102 millimeters.
• Width: 143 millimeters.
• Approximate net weight: 1.8 kilograms.
• Approvals and markings: CE, VDE and EAC.

Compact high-efficiency pump for demanding circuits

The Wilo Yonos PICO 25/1-8-130 combines a maximum head of 7.6 meters and a flow rate of up to 4.4 cubic meters per hour with a connection length of only 130 millimeters, making it especially practical when a powerful circulator is needed in a limited space.

Its ECM motor, electronic control, LED display, venting function, automatic unlocking, three operating modes and Wilo quick connector make both installation and adjustment easier in radiator circuits, underfloor heating and other heating and air conditioning applications.