Smart pumps for commercial buildings utilizing building automation technology.

With its optimized, innovative energy-saving features, the Wilo-Stratos MAXO sets a new benchmark for energy efficiency in commercial HVAC applications. Furthermore, its user-friendly design offers an unprecedented level of ease of operation.

Features/Product Advantages

Various options for integration into building automation systems.
Intuitive operation via a combination of a new display and the "Green Button" control element, supported by an application setup wizard.
Maximum energy efficiency achieved through the optimized interaction of innovative energy-saving functions (e.g., No-Flow Stop).
Optimized system efficiency via innovative smart control functions such as Dynamic Adapt plus, Multi-Flow Adaptation, T-const., and ΔT-const.
Advanced communication interfaces (e.g., Bluetooth) for connecting mobile devices, and direct pump networking for multi-pump systems via Wilo Net.
Simple and convenient electrical installation thanks to a spacious, clearly laid-out terminal compartment and the optimized Wilo-Connector.

Product Characteristics

Pump housing made of grey cast iron with KTL (cataphoretic) coating
Thermal insulation shell
EC motor technology
Full-graphic display with setup wizard
Building automation interface
Bluetooth interface
Green Button Technology
Cable connections and terminals
Wilo-Connector

Eco-friendly Attributes

Combination of optimized and innovative control modes for maximum energy efficiency
Innovative "Multi-Flow Adaptation" technology ensures maximum system efficiency, saving up to 80% energy
Sustainable and carbon-neutral production and processes at our European plants
Transparent overview of pump operating status via remote access, requiring fewer resources compared to on-site inspections

Construction

Smart glandless circulation pump with threaded or flanged connection, EC motor, and integrated electronic power adjustment.

Applications

Various hot-water heating systems, air conditioning units, closed cooling circuits, and industrial circulation systems.

Equipment/Functions

Areas of Application

Precise setting of control modes tailored to specific applications (e.g., radiators, underfloor heating, chilled ceilings) enables highly efficient pump operation.

Heating

Radiators
Underfloor heating
Ceiling heating
Fan heaters
Concrete core heating*
Hydraulic separator
Low-loss header*
Buffer tank heating*
Heat exchanger
Heat source circuit (heat pump)*
District heating circuit*

Cooling

Ceiling cooling
Floor cooling
Air conditioning units
Concrete core cooling*
Hydraulic separator
Low-loss header*
Buffer tank cooling*
Heat exchanger
Recirculation cooling circuit*
District cooling circuit*

(* Available for system types with SW ≥ 01.05.10.00)

Combined heating and cooling

Automatic switchover ("-R7" version: not supported, but achievable by installing a Stratos MAXO temperature sensor)

The following control modes are available depending on the selected application:

Control modes

Constant speed (fixed speed)
Δp-c (constant differential pressure)
Δp-v (variable differential pressure)
Dynamic Adapt plus (continuous/dynamic output adjustment based on current demand)
T-const. (constant temperature control)
ΔT-const. (constant temperature difference control)
Constant Q (constant flow control)
Multi-Flow Adaptation (total flow determination by supplying demand signals to the auxiliary pumps of the heating circuit manifold)
User-defined PID control

Optional functions

Q-Limitmax. (maximum flow rate limitation)
Q-Limitmin. (minimum flow rate limitation)
No-Flow Stop
Automatic night setback mode ("-R7" version: not supported, but available with Stratos ...Stratos MAXO temperature sensor)
Setpoint adjustment (Δp-c control via external actual value sensor)
Variable slope for Δp-v pump curve

Manual settings

Application selection via setup wizard
Configuration of relevant operating parameters
Nominal duty point: direct input of calculated duty point for Δp-v
Status display
Energy metering setup and reset (heating and cooling energy)
Pump venting function
Key lock to secure settings
Factory reset or restore to saved restore point (parameter set)
Analog input configuration
Binary input configuration
Relay output configuration
Dual pump function (operation of two single pumps as a dual pump system)

Automatic functions

Power adjustment based on high-efficiency operating mode requirements
Night setback detection ("-R7" version: not supported, but equipped with Stratos MAXO temperature sensor)
No-Flow Stop function
Soft start
Automatic fault clearance routines (e.g., unblocking function)
Heating/cooling mode switching ("-R7" version: automatic switching not supported, but achievable if equipped with Stratos MAXO temperature sensor)
Comprehensive motor protection with integrated trip electronics

External control inputs and functions

2× Analog inputs:
Signal types: 0–10 V, 2–10 V, 0–20 mA, 4–20 mA, PT1000
Applications: Remote setpoint adjustment for various control modes (except Multi-Flow Adaptation); sensor input for temperature, differential pressure, or freely selectable sensors for user-defined PID operation
2× Digital inputs:
For passive control outputs or switches
Configurable functions:
Ext. OFF
Ext. MIN
Ext. MAX
MANUAL (BMS-OFF)
Key lock
Automatic heating/cooling mode switching

Wilo Net function for dual-pump management (controlling two single pumps), communication between multiple pumps, and remote commissioning via a gateway.

Reporting and display functions

Operation display (screen status):
Rated values
Actual head
Actual volume flow
Power consumption
Energy consumption
Temperature ("-R7" version: displays actual fluid temperature when equipped with the Stratos MAXO temperature sensor)
Status LEDs: Fault-free operation (green LED), pump communication (blue LED)
Fault display (screen turns red):
Fault code and full-text fault description
Troubleshooting measures
Warning display (screen turns yellow):
Warning code and full-text warning description
Troubleshooting measures
Process display (screen turns blue):
Pump venting
Update process
BMS communication display (screen turns blue):
Summary of active BMS parameters (baud rate, address, etc.)
SSM system fault signal (potential-free changeover contact)
SBM system run signal (potential-free normally open contact)

Data exchange

Wireless data exchange and remote pump operation via Bluetooth interface (smartphone or tablet).
Remote pump monitoring via WiloCare.
Digital interface (Modbus TCP) for building automation connection (Wilo-CIF module Ethernet [multi-protocol] available).
Serial digital interface (Modbus RTU) for building automation connection via RS485 bus system (Wilo-CIF module Modbus RTU available).
Digital interface (BACnet IP) for building automation connection (Wilo-CIF module Ethernet [multi-protocol] available).
Serial digital interface (BACnet MS/TP) for building automation connection via RS485 bus system (Wilo-CIF module BACnet MS/TP available).
Serial digital interface (LON) for building automation connection via LONWorks bus system (Wilo-CIF module LON available).
Serial digital interface (CANopen) for building automation connection via CANopen bus system (Wilo-CIF module CANopen available).
Serial digital interface (PLR) for building automation connection via proprietary coupling module (Wilo-CIF module PLR ​​available).

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

Main/standby operation (automatic fault-actuated switchover/time-controlled pump cycling)
Parallel operation (efficiency-optimized peak-load activation and deactivation)

Equipment

For flanged pumps: Flange specifications
Standard version for DN 32 to DN 65 pumps: PN 6/10 Combi-flange (PN 16 flange according to EN 1092-2) for PN 6 and PN 16 mating flanges
Standard version for DN 80/DN 100 pumps: PN 6 flange (designed for PN 16 flange according to EN 1092-2) for PN 6 mating flanges
Special version for DN 32 to DN 100 pumps: PN 16 flange (according to EN 1092-2) for PN 16 mating flanges
Extensive built-in communication interfaces and slot for optional CIF modules
5 cable entries for communication interfaces
Bluetooth interface
High-resolution graphic display with Green Button and 2 additional buttons
User-friendly terminal room
Integrated temperature sensor (Version "-R7": none)
Standard thermal insulation for heating applications
Quick electrical connection via optimized Wilo-Connector

Scope of delivery

Pump
Optimized Wilo-Connector
2x M16 x 1.5 cable glands
Seals for threaded connections
Washers for flange bolts (for nominal connection diameters DN 32 – DN 65)
Thermal insulation shell

Type key

Technical Data

Permissible temperature range: -10 °C to +110 °C, -10 °C to +90 °C
Mains connection: 1~230 V, 50/60 Hz
Protection class: IPX4D
Threaded or flanged connection (depending on model): Rp 1 to DN 100
Max. operating pressure for standard models: 6/10 bar or 6 bar (special models: 10 bar or 16 bar)
Insulation class: F
Emitted interference: EN 61800-3:2004+A1:2012 / Residential area (C1)
Interference immunity: EN 61800-3:2004+A1:2012 / Industrial area (C2)
Max. flow rate Q: 74 m³/h
Max. head H: 16 m

Materials

Bearing: Carbon, antimony-impregnated
Impeller: PPS-GF40
Pump housing: Grey cast iron
Shaft: 1.4028, DLC-coated

Type

Smart glandless circulation pump with EC motor and integrated electronic power control
Green Button Technology and graphic display
Motor protection with trip electronics
Plug-in connection for function extension with optional CIF modules for building automation
Impeller with 3D-curved blades; plastic containment can made of carbon-fiber composite material