Wilo-Stratos MAXO 25/0.5-12 PN10 circulating pump

Wilo-Stratos MAXO Smart Premium Pump

Meet the Wilo-Stratos MAXO inline glandless pump - a device with the highest efficiency, equipped with an EC motor and an advanced electronic capacity adjustment system. The pump is dedicated to hot water, cold water and a mixture of water and glycol, offering high energy efficiency (EEI ≤ 0.19, depending on the version)

Types of control

• Wilo-Dynamic Adapt plus - constant, automatic adaptation of power to the requirements of the system without inputting setpoints, allowing energy savings of up to 20% compared to dp-v control mode
• Fixed temperature (T-const.)
• Constant differential temperature (dT-const.)
• Multi-Flow Adaptation - optimizes the pump's rotary flow by connecting and communicating with several devices
• Constant flow (Q-const.)
• Control of differential pressure dp-c at a remote point in the pipeline (erroneous point control)
• Constant differential pressure (dp-c)
• Variable differential pressure (dp-v) with nominal operating point input option
• Constant speed (n-const.)
• User-defined PID control

Functions

• Heat and cold quantity recording
• Automatic shutdown when zero flow is detected (No-Flow Stop)
• Switching between heating and cooling modes - automatic, external and manual operation
• Adjustable flow limitation thanks to Q-Limit function (Qmin. and Qmax.)
• Dual pump operation - efficiency-optimized operation with connection for dp-c and dp-v, enabling operation in basic or reserve mode
• Saving and restoration of configured settings (3 restore points)
• Failure and warning signaling in text form with diagnostic assistance
• Rotor chamber venting function
• Automatic operation in night setback mode
• Automatic non-locking function and full motor protection
• Dry operation detection

Display indications

• Type of control
• Setpoint
• Flow
• Temperature
• Power consumption
• Current consumption
• Factors with active influence (e.g. STOP, No-Flow Stop)

Versions and configuration

• 2 configurable analog inputs: 0-10 V, 2-10 V, 0-20 mA, 4-20 mA and standard PT1000; power supply from +24 V DC
• 2 configurable digital inputs (Ext. Off, Ext. Min, Ext. Max, heating/cooling, manual override capability - building automation paired, key lock and remote control configuration protection)
• 2 configurable relays for signaling operation and failure messages
• Wilo CIF module slot with interfaces for building automation (optional accessories: CIF modules Modbus RTU, Modbus TCP, BACnet MS/TP, BACnet IP, LON, PLR, CANopen)
• Wilo Net - a bus system that allows communication of Wilo products (e.g. Multi-Flow Adaptation, integration of double pumps, Wilo-Smart Gateway)
• Integrated temperature sensors
• Automatic fail-safe mode - maintains defined speed in emergency situations, such as loss of communication or incorrect sensor readings
• Graphic color display (4.3 inches) with operation via one-button manual operation module
• Bluetooth interface for reading and setting of operating data and protocol generation (Wilo-Assistant application)
• Management of double pump operation - possibility to wire two single pumps as a double pump unit using the Wilo Net system
• Ability to recognize analog signal wire breaks (for 2-10 V or 4-20 mA)
• Outdoor positioning with protection against climatic factors according to the installation and operating instructions
• Date and time set as standard
• Thermal insulation covers for use in heating systems

Scope of delivery

• Wilo-Stratos MAXO pump
• Optimized Wilo-Connector for all sizes
• 2 x cable glands M16 x 1.5
• Washers for M12 and M16 flange bolts (connection ratings DN 32 and DN 65)
• 2 x gaskets for the threaded connection
• Thermal insulation covers
• Compact installation and operating instructions

Optional accessories

• ClimaForm refrigeration insulation to prevent condensate formation
• CIF module: Modbus TCP, Modbus RTU, BACnet IP, BACnet MS/TP, LON, PLR, CANopen
• PT 1000 (B) - piping sensors for drinking water
• PT 1000 (AA) - submersible sleeve-mounted transmitter
• Differential pressure sensor

Performance data

Parameter	Value
Min. temperature of the pumped liquid (Tmin)	-10 °C
Max. temperature of the pumped liquid (Tmax)	110 °C
Ambient temperature (min)	-10 °C
Ambient temperature (max)	40 °C
Max. operating pressure (PN)	10 bar
Minimum inlet height for 50 °C	3 m
Minimum inlet height for 95 °C	10 m
Minimum inlet height for 110 °C	16 m

Motor data

Parameter	Value
Energy efficiency index (EEI)	≤ 0,19
Mains connection	1~230 V ±10%, 50/60 Hz
Rated current IN	0.11 A / 1.28 A
Rated powerP2	262 W
Speed (min)	750 1/min
Speed (max)	4350 1/min
Power consumption (min)	7 W
Power consumption (max)	295 W
Interference generation	EN 61800-3;2004+A1;2012 / residential environment (C1)
Interference immunity	EN 61800-3;2004+A1;2012 / industrial environment (C2)
Insulation class	F
Degree of protection	IPX4D
Cable gland	5 x M16 x 1.5

Materials and construction

• Pump body: grey cast iron
• Impeller: PPS-GF40
• Shaft: 1.4122, with DLC coating
• Bearing material: Sintered carbon, impregnated with antimony

Installation dimensions

• Suction-side connection: G 1½
• Discharge side connection: G 1½
• Installation length _L0: 180 mm

Additional information

• Manufacturer: Wilo
• Product name: Stratos MAXO 25/0.5-12 PN 10
• Net weight: approx. 7.5 kg
• Article number: 2164571