Your advantages

• Energy savings due to greater system efficiency with the Q-Limit function (volume flow limiter)
• Improved Energy Efficiency Index (EEI) ≤0.23 for all twin-head 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)
• Dual pump management via retrofittable IF-Modules:
• 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 It will be fully superseded by the new Wilo-Stratos MAXO smart pump.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 twin-head circulator with flange connection, EC motor with automatic power adjustment

Application

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

Equipment/function

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

• Individual/collective fault signal (potential-free NC contact) (programmable with the IR-Stick/IR-Monitor)
• 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 IF-Modules 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

• 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 pumps DN 80: PN 6 flange (designed for PN 16 according to EN 1092-2) for PN 6 counter flange
• Special version for DN 32 to DN 80 pumps: PN 16 flange (according to EN 1092-2) for PN 16 counter flange,
• Double switchover valve in pump housing
• Plug-in position for optional extension with Wilo-IF-Modules

Scope of delivery

• Pump
• Including washers for flange screws (for nominal connection diameters DN 32 - DN 65)
• Including installation and operating instructions

Type key

Example:	Stratos-D 40/1-8
Stratos	High-efficiency pump (flange-end pump), electronically controlled
D	Twin-head pump
40/	Nominal connection diameter
1-8	Nominal delivery head range [m]

Technical data

• Permissible temperature range -10 °C to +110 °C
• Mains connection 1~230 V, 50/60 Hz
• Protection class IPX4D
• Flange connection DN 32 to DN 80
• Max. operating pressure of standard version: 6/10 bar or 6 bar (special version: 10 bar or 16 bar)

Materials

• Pump housing: Cast iron
• Shaft: Stainless steel
• Bearing: carbon, metal impregnated
• Impeller: Plastic

Description/construction

• Glandless twin-head 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-Modules for building automation (BA)
• Impeller with three-dimensionally curved blades and plastic sealing tube made of carbon fibre composite material