Stratos Circulating Pump

Hot Water Heating Systems

Hot-water heating systems of all kinds, air-conditioning systems, closed cooling circuits, industrial circulation systems.

• Energy savings due to greater system efficiency with the Q-Limit function (volume flow limiter).
• Improved Energy Efficiency Index (EEI) ≤ 0.20 for all single pumps.
• Enhanced display for better readability and ease of operation.
• Space-saving installation thanks to compact design and variable-orientation LC display.
• Modular concept for connection of all conventional bus systems (e.g. Modbus, BACnet, CAN, LON and PLR).
• Tried-and-tested quality and reliability.

Phasing Out Program:

After 19 successful years, the Wilo-Stratos high-efficiency pump will be removed from our product range at the end of the year. It will be fully superseded by the new Wilo-Stratos MAXO smart pump. The successful era of the Stratos series will continue with the Stratos MAXO’s new pump technology.

Construction:

Glandless circulator with threaded connection or flange connection, EC motor with automatic power adjustment.

Materials:

• Pump housing: grey cast iron with cataphoretic coating.
• Thermal insulation: polypropylene.
• Shaft: Stainless steel.
• Bearing: carbon, metal impregnated.
• Impeller: Plastic.

Application:

Hot-water heating systems of all kinds, air-conditioning systems, closed cooling circuits, industrial circulation systems.

• Glandless circulator with EC motor and integrated automatic power adjustment
• Green Button Technology and graphic display
• Motor protection with trip electronics
• Plug connection for functional extension with optional IF module for building automation (BA)
• Impeller with three-dimensionally curved blades and plastic sealing tube made of carbon fibre composite material

Operating Modes:

• Constant speed (n=constant)
• Δp-c for constant differential pressure
• Δp-v for variable differential pressure
• Δp-T for temperature-controlled differential pressure (programmable via IR-Stick, IR-Monitor, Modbus, BACnet, LON or CAN)
• Q limit for limiting the maximum volume flow (setting only via IR-stick)

Manual Functions:

• Setting the operating mode
• Differential pressure setpoint setting
• Setting automatic setback operation
• Setting the pump ON/OFF
• Setting the speed (manual control mode)

Automatic Functions:

• Continuous power adjustment according to the operating mode
• Automatic setback operation
• Deblocking function
• Soft start
• Full motor protection with integrated trip electronics

External Control Functions:

• "Overriding Off" control input (possible with Stratos IF-Modules)
• "Overriding Min" control input (possible with Stratos IF-Modules)
• "Analogue In 0 - 10 V" control input (remote speed adjustment) (possible with Stratos IF-Modules)
• "Analogue In 0 - 10 V" control input (remote setpoint adjustment) (possible with Stratos IF-Modules)

Signal and Display Functions:

• Collective fault signal (potential-free NC contact)
• Individual run signal (potential-free NO contact) (possible with Stratos IF-Modules)
• Fault signal light
• LCD display for indication of pump data and error codes

Data Exchange:

• Infrared interface for wireless data exchange with IR-Stick/IR-Monitor
• Modbus RTU serial digital interface for connection to building automation BA via RS485 BUS system (possible with Stratos IF-Modules)
• BACnet serial digital interface MS/TP Slave for connection to building automation BA via RS485 BUS system (possible with Stratos IF-Modules)
• CAN serial digital interface for connection to building automation BA via CAN BUS system (possible with Stratos IF-Modules)
• LON serial digital interface for connection to a LONWorks network (possible with Stratos IF-Modules)
• PLR serial digital interface for connection to BA via Wilo interface converter or company-specific coupling modules (possible with Stratos IF-Modules)

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

• Main/standby operation (automatic fault-actuated switchover/time-dependent pump cycling): various combinations with Stratos IF-Modules (accessories) possible
• Parallel operation (efficiency-optimised peak load activation and deactivation): various combinations with Stratos IF-Modules (accessories) possible

Equipment:

• Wrench attachment point on pump body (for threaded pipe union pumps with P2 < 100 W)
• For flange-end pumps: Flange versions
• Standard version for DN 32 to DN 65 pumps: PN 6/10 combination flange (PN 16 flange according to EN 1092-2) for PN 6 and PN 16 counter flanges
• Standard version for DN 80/DN 100 pumps: PN 6 flange (designed for PN 16 according to EN 1092-2) for PN 6 counter flange
• Special version for DN 32 to DN 100 pumps: PN 16 flange (according to EN 1092-2) for PN 16 counter flange
• Plug-in position for optional extension with Wilo-IF-Modules
• Thermal insulation as standard for heating applications