WILO ATMOS PICO 25/1-6-130 Circulation Pump

Heating and cooling systems often suffer from inefficient water circulation, leading to uneven temperatures and high energy bills. The WILO ATMOS PICO 25/1-6-130 circulation pump solves this by delivering reliable, electronically controlled performance in a compact design. With a maximum head of 6 meters and a flow rate of 3.5 m³/h, it ensures consistent heat distribution in residential and light commercial applications.

Who is it for

This pump is ideal for homeowners, HVAC installers, and facility managers who need a dependable circulator for heating systems, air conditioning, or industrial circulation loops. It fits standard DN 25 connections and is easy to integrate into existing pipework.

Main features

• ECM technology with variable speed control (Δp-c, Δp-v) for optimal efficiency
• Energy Efficiency Index ≤ 0.20, exceeding ErP directive requirements
• LED display for clear status indication and simple settings
• Robust grey cast iron housing with stainless steel shaft for long service life
• Wide fluid temperature range from -10 °C to +95 °C
• Quiet operation and maintenance-free design

Specifications

• Max. head: 6 m
• Max. flow rate: 3.5 m³/h
• Connection: DN 25 (G 1½ external thread)
• Installation length: 130 mm
• Power consumption: 4–40 W
• Voltage: 1~230 V, 50/60 Hz
• Protection class: IPX4D
• Insulation class: F
• Max. operating pressure: 10 bar
• Fluid temperature: -10 °C to +95 °C
• Housing material: Grey cast iron (EN-GJL-200)
• Impeller: Plastic (PP - 30% GF)
• Shaft: Stainless steel (1.4021)
• Bearing: Carbon, metal impregnated
• Minimum suction head: 0.5 bar at 95 °C

Tips

For optimal performance, install the pump with the motor shaft horizontal and ensure the system is properly vented. Use the Δp-v mode for radiator systems with thermostatic valves to reduce energy consumption. Regular inspection of the LED display helps detect potential issues early.