The Wilo TOP-RL series of canned rotor circulation pumps is a high-performance product line designed specifically for modern heating, air conditioning, and domestic hot water circulation systems. Inheriting Wilo’s advanced technology in the field of canned rotor pumps, this series ensures long-term, stable, efficient, and quiet operation of fluid transport systems through its unique design and superior performance.

Core Technology: Superior Canned Motor Design

The heart of the Wilo TOP-RL pump lies in its advanced canned motor technology. This technology eliminates the dynamic shaft seals found in traditional pumps; instead, a special metal can completely isolates the rotor from the stator, creating a hermetic seal between the motor and the pumped medium. This revolutionary design fundamentally prevents leakage caused by mechanical seal wear, thereby enhancing operational safety and significantly reducing the frequency and cost of maintenance—making it particularly suitable for handling media that could be hazardous to people or the environment.

Ultra-Quiet Operation: Creating a Peaceful, Comfortable Environment

Thanks to its canned motor structure and precision dynamic balancing, the TOP-RL pump operates with minimal noise and vibration. Whether in quiet residences, demanding hospital wards, or late-night office environments, it operates almost silently, effectively enhancing the comfort of the space.

High Efficiency and Energy Savings: Lowering System Operating Costs

This series utilizes high-efficiency hydraulic designs and premium core materials, combined with optimized electromagnetic engineering, to maintain peak operating efficiency across a wide range of operating conditions. This translates directly into lower power consumption, helping users significantly reduce long-term energy costs and aligning with current trends toward energy conservation and green development.

Durability and Broad Adaptability

Key wetted parts of the Wilo TOP-RL pump are manufactured from corrosion- and wear-resistant materials, ensuring stable, long-term operation with high-temperature hot water, chilled water, and even mildly corrosive media. Its broad performance range allows it to flexibly meet the flow and head requirements of various systems, demonstrating exceptional versatility. Intelligent Control and Convenient Maintenance

Modern TOP-RL pump models typically feature intelligent control capabilities—such as multi-speed adjustment or variable frequency control—that automatically adapt operating status to actual system loads, enabling on-demand supply and further optimizing energy efficiency. Additionally, their modular design and long-life bearings ensure ease of maintenance; when servicing is required, components can be replaced quickly, thereby minimizing downtime.

Construction

Glandless circulation pump with threaded or flanged connection

Manual power adjustment with 3 speed stages

Pump housing with cathodic dip coating (KTL) protects against corrosion caused by condensate formation

Applications

Hot-water heating systems, air-conditioning systems, closed cooling circuits, industrial circulation systems

Equipment/functions

Operating modes

Speed ​​stage switching

Manual functions

Speed ​​stage setting (3 speed stages)

Automatic functions

Comprehensive motor protection with integrated trip electronics (optional for all Wilo-Protect-Module C models)

External control functions

"Override Off" control input (optional for all Wilo-Protect-Module C models)

Signal and display functions

Individual/combined fault signal (potential-free NC contact) (optional for all Wilo-Protect-Module C models)
Combined fault signal (potential-free NC contact) (optional for all Wilo-Protect-Module C models)
Individual run signal (potential-free NO contact) (optional for all Wilo-Protect-Module C models)
Fault signal light (optional for all Wilo-Protect-Module C models)

Dual pump management (twin-head pump or 2 x single pumps)

Main/standby mode (automatic fault-actuated switchover / time-dependent pump cycling) (optional for all Wilo-Protect-Module C models)

Equipment

Flanged pumps: Flange versions
Standard version for DN 40 pumps: Combination flange PN 6/10 (PN 16 flange according to EN 1092-2) for PN 6 and PN 16 counter-flanges

Type key

Technical data

Permissible temperature range -20 °C to +130 °C; up to +140 °C for short periods (2 h)
Mains connection 1~230 V, 50 Hz
Protection class IPX4D
Threaded or flanged connection (depending on model): Rp 1, Rp 1¼, or DN 40
Max. operating pressure, standard model: 10 bar or 6/10 bar

Materials

Pump housing: Grey cast iron
Impeller: Plastic
Shaft: Stainless steel
Bearing: Carbon, metal-impregnated

Scope of delivery

Pump
Gaskets for threaded connections
Washers for flange bolts (for nominal connection diameter DN 40)
Installation and operating instructions

Accessories

Threaded connections
Adapter fittings
Wilo-Protect-Module C (1~230 V) for single pumps