The Wilo Atmos PICO is a high-efficiency, intelligent, canned-rotor circulation pump with constant-pressure variable-speed control, designed specifically for residential heating and hot water systems. Utilizing permanent-magnet synchronous motor technology, it achieves precise speed regulation and energy savings of up to 50%, significantly reducing electricity costs. Key features include six built-in operating curves that automatically adapt to system requirements—such as radiator or underfloor heating—ensuring constant pressure output across various loads and preventing discomfort caused by pressure fluctuations. The "Green Button" control system simplifies operation; users can switch modes, start venting programs, and adjust power with a single rotary action, eliminating the need for complex settings. An LED display provides real-time monitoring of operating status, pump head, and error codes for added convenience.

The pump operates exceptionally quietly—with noise levels below 30 dB—thanks to its canned-rotor technology and optimized motor design, creating a peaceful home environment. Robust automated functions include dry-run detection and an automatic anti-blocking mechanism; if a blockage occurs (e.g., due to water quality issues), the pump initiates a self-cleaning routine using high-torque vibration to clear the obstruction, ensuring maintenance-free operation. It also supports automatic venting, completing the process in approximately 10 minutes during commissioning before switching to default mode, thereby minimizing manual intervention. Suitable for a wide range of applications—including domestic hot water circulation, underfloor heating, solar thermal systems, and small air-conditioning units—it offers a maximum head of 16 meters. This meets the "instant hot water" needs of multi-story villas, large flats, and apartments, eliminating wait times and ensuring a stable, 24-hour hot water supply.

Additionally, the product employs intelligent temperature control and variable-speed boosting technology. It dynamically optimizes energy consumption based on temperature fluctuations at the system's end-points; during the heating season, electricity savings can exceed 50%, allowing the additional investment cost to be recouped within just two heating seasons. Designed for easy residential installation, it features a particle filter and anti-blocking protection to ensure long-term reliability. The "Green Button" technology also integrates smart control modes, supporting remote operation and scheduling—with up to six programmable time slots for automatic operation—further enhancing energy efficiency and the user experience. Overall, the Wilo-Atmos PICO excels through high efficiency, quiet operation, smart functionality, and durability, achieving a perfect balance between energy savings and living comfort via innovative technology.

structure

Glandless circulation pump with threaded connection, blocking-current-proof EC motor, and integrated electronic power control.

Featuring the "Green Button," a simple user interface, and a standard design, the Wilo-Atmos PICO high-efficiency pump is an ideal entry-level model for single- and two-family homes. With essential settings and functions, it can be quickly and easily deployed for heating, air conditioning, and cooling applications. It is particularly recommended as a replacement for older pumps equipped with asynchronous motors and lacking smart controls.

High-efficiency EC motor technology featuring two control modes, each with three characteristic curves.

Convenient basic settings via the "Green Button" and a simple user interface.

Compact design for quick and easy installation and replacement.

Reliable operation ensured by proven technology and protective functions.

Applications

All domestic hot water heating systems, air conditioning applications, and industrial circulation systems.

Equipment/Functions

Operating modes

Variable differential pressure (3 predefined characteristic curves)
Constant speed (3 speed stages)

Manual functions

Setting the operating mode
Setting the pump output (characteristic curve)
Setting the constant speed

Automatic functions

Automatic restart

Indication and display functions

Display of selected control mode
Display of characteristic curve selected within the control mode
Status indication
LED lights up green during normal operation
LED lights up/flashes in the event of a fault

Equipment

Wrench attachment points on the pump housing
Wilo-Connector
Blocking-current proof motor
Particle filter

Type key

Technical data

Fluid temperature -10 °C to +95 °C
Mains connection 1~230 V, 50 Hz
Protection class IPX2D
Threaded connection G1, G1½, G2
Max. operating pressure 10 bar

Materials

Pump housing: Grey cast iron (EN-GJL-200)
Impeller: Plastic (PP - 40% GF)
Pump shaft: Stainless steel
Bearing: Carbon, metal-impregnated

Scope of delivery

Pump
Wilo-Connector
Gaskets
Installation and operating instructions

Options

Atmos PICO ...-130 version with short installation length of 130 mm

Accessories

Screw connections
Adapter fittings
Thermal insulation
Wilo-Connector incl. 2 m connection cable and plug with earthing contact
Angled plug incl. 2 m connection cable