Wilo Stratos MAXO Water Recirc Hot Water Pumps For Heating System

Smart glandless circulator with screwed connection or flange connection, EC motor with integrated electronic power adjustment.

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

Field of application

The pump facilitates an operation with highest system efficiency via precise setting of the control mode for the system-specific application (e.g. radiator, underfloor heating, ceiling cooling).

Heating

• Radiator
• Underfloor heating
• Ceiling heating
• Fan heater
• Concrete core heating*
• Hydraulic shunt
• Differential pressure-less distributor*
• Buffer heating*
• Heat exchanger
• Heat source circuit (heat pump)*
• District heating circuit*

Cooling

• Ceiling cooling
• Underfloor cooling
• Air-conditioning devices
• Concrete core cooling*
• Hydraulic shunt
• Differential pressure-less distributor*
• Buffer cooling*
• Heat exchanger
• Recooling circuit*
• District cooling circuit*

(* system types from SW≥01.05.10.00 available)

Heating and cooling combined

• Automatic switchover (version “-R7”: not possible; however, possible with Stratos MAXO temperature sensor)

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

Control modes

• Constant speed (control mode)
• Δp-c for constant differential pressure
• Δp-v for variable differential pressure
• Dynamic Adapt plus for continuous (dynamic) adjustment of the delivery rate to the current requirement
• T-const. for constant temperature control
• ΔT-const. for constant differential temperature control
• Constant Q for constant volume flow control
• Multi-Flow Adaptation: Total volume flow determination through the feeder pump for the needs-based supply of secondary pumps in the heating circuit distributors
• User-defined PID control

Optional functions

• Q-Limitmax. for limiting the maximum volume flow
• Q-Limitmin. for limiting the minimum volume flow
• No-Flow Stop (zero-flow-deactivation)
• Automatic night setback (version “-R7”: not possible; however, possible with Stratos MAXO temperature sensor
• Index circuit evaluator (Δp-c control with external actual value sensor)
• Variable pitch of Δp-v pump curve

Manual settings

• Selection of the field of application in the setting assistant
• Setting the related operating parameters
• Nominal duty point: direct input of calculated duty point at Δp-v
• Status display
• Setting and resetting the energy meters (heating and cooling)
• Pump venting function
• Key lock for disabling the settings
• Function for resetting the factory settings or the saved restoration points (parameter sets)
• Parameterising the analogue inputs
• Parameterising the binary inputs
• Parameterising the relay outputs
• Dual-pump function (for 2 single pumps, which should be operated as a two-pump system)

Automatic functions

• Power adjustment according to requirements for energy-efficient operation depending on the operating mode
• Detection of night setback (version “-R7”: not possible; however, possible with Stratos MAXO temperature sensor
• Deactivation at zero flow (No-Flow Stop)
• Soft start
• Automatic troubleshooting routines (e.g. deblocking function)
• Switchover between heating/cooling mode (version "-R7": automatic switchover not possible; however, possible with Stratos MAXO temperature sensor)
• Full motor protection with integrated trip electronics

External control inputs and their functions

• 2 x analogue inputs:
• Signal types: 0 – 10 V, 2 – 10 V, 0 – 20 mA, 4 – 20 mA, PT1000
• Applications: Remote adjustment of the setpoints in every control mode (except Multi-Flow Adaptation), sensor inputs for temperature, differential pressure or free sensor in user-defined PID operation
• 2 x digital inputs:
• For potential-free control outputs or switch
• Parametrisable functions:
  • Ext. Off
  • Ext. Min
  • Ext. Max
  • MANUAL (BMS-OFF)
  • Key lock
  • Switchover between heating/cooling mode

Wilo Net for dual-pump management of 2 single pumps, communication of several pumps with each other and pump remote adjustment via gateway

Signal and display functions

• Display status operation display:
  • Setpoint
  • Actual delivery head
  • Actual volume flow
  • Power consumption
  • Electric consumption
  • Temperatures (version "-R7": current fluid temperature possible with Stratos MAXO temperature sensor)
• Status display LED: Faultless operation (green LED), pump communication (blue LED)
• Display status of display fault (display red):
  • Error codes and error description in full text
  • Remedial measures
• Display status of display warning (display yellow):
  • Warning codes and description of the warning in full text
  • Remedial measures
• Display status process indicator (display blue):
  • Pump venting
  • Update procedure
• Display BMS communication (display blue):
• Summary of the active BMS parameters (baud rate, address...)
• Collective fault signal SSM (potential-free changeover contact)
• Collective run signal SBM (potential-free normally open contact)

Data exchange

• Bluetooth interface for wireless data exchange and remote operation of the pump using a smartphone or tablet.
• Remote monitoring of the pump via WiloCare.
• Digital Modbus TCP interface for connection to building automation (BA) (possible with Wilo-CIF module Ethernet [multi-protocol]).
• Serial digital interface Modbus RTU for connecting building automation (BA) via RS485 bus system (possible with Wilo-CIF module Modbus RTU).
• Digital BACnet IP interface for connection to building automation (BA) (possible with Wilo-CIF module Ethernet).
• Serial digital interface BACnet MS/TP for connecting building automation (BA) via RS485 bus system (possible with Wilo-CIF module BACnet MS/TP).
• Serial digital interface LON for connecting building automation (BA) via bus system LONWorks (possible with Wilo-CIF module LON).
• Serial digital interface CANopen for connecting building automation (BA) via bus system CANopen (possible with Wilo-CIF module CANopen).
• Serial digital interface PLR for connecting BA via company-specific coupling module (possible with Wilo-CIF module PLR).

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

• Main/standby operation (automatic fault-actuated switchover/time-sensitive pump alteration)
• Parallel operation (efficiency-optimised peak load cut-in and out)

Equipment

• 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
• Various integrated communication interfaces and optionally usable CIF module plug-in position
• 5 cable inlets for connecting the communication interfaces
• Bluetooth interface
• High resolution graphic display with green button and 2 additional buttons
• User-friendly terminal room
• Integrated temperature sensor (version "-R7": without)
• Thermal insulation as standard for heating applications
• Quick electrical connection with optimised Wilo-Connector for the power supply