Features/Product Advantages

Integrated electronic power control for energy savings
Optional interface available for bus communication via plug-in IF modules
User-friendly operation featuring "Green Button" technology and a display
Integrated dual-head pump management
Integrated comprehensive motor protection with electronic trip unit (PTC thermistor sensors)

Eco-friendly attributes

Highly energy-efficient, utilizing IE4 motor technology and hydraulics with MEI ≥ 0.4
Sustainable and carbon-neutral production and processes at our European plants

Design

Electronically controlled, dry-running single-head pump in an in-line design, featuring flange connections and automatic power control

Applications

Pumping of heating water (in accordance with VDI 2035), cold water, and water-glycol mixtures in heating, cold water, and cooling systems (media must be free of abrasive substances).

Equipment/Functions

Operating modes

Δp-c (constant differential pressure)
Δp-v (variable differential pressure)
PID control
Constant speed (n = constant)

Manual operation level

Green button and display

Manual functions

Differential pressure setpoint adjustment
Speed ​​adjustment (manual control mode)
Operating mode selection
Pump ON/OFF
Configuration of all operating parameters
Fault acknowledgement

External control functions

1× "Overriding Off" control input
1× "External pump cycling" control input (active only in twin-head pump operation)
1× Analog input (0-10 V, 2-10 V, 0-20 mA, 4-20 mA) for constant speed (DDC) and remote setpoint adjustment
1× Analog input (0-10 V, 2-10 V, 0-20 mA, 4-20 mA) for actual value signal from pressure sensor

Reporting and display functions

Combined fault signal (SSM)
Combined run signal (SBM)

Data exchange

Wireless data exchange via IR interface and IR stick
Slot for Wilo IF-Modules (Modbus, BACnet, CAN, PLR, LON) for connection to building automation systems

Safety functions

Comprehensive motor protection with integrated trip electronics
Access lock

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

Main/standby operation (automatic fault-actuated switchover)
Main/standby operation with pump cycling after 24 hours
Parallel operation
Parallel operation (efficiency-optimized peak-load activation/deactivation)

Type key

Technical data

Permissible temperature range -20°C to +140°C
Minimum Efficiency Index (MEI) ≥ 0.4
The mechanical seal is suitable for pumping water at temperatures up to Tmax = +140°C. At temperatures T ≤ +40°C, the pumping of water-glycol mixtures with a glycol volume content of 20% to 40% is permitted. If the glycol volume content in the water-glycol mixture exceeds 40% (up to a maximum of 50%), the medium temperature exceeds +40°C (up to a maximum of +120°C), or if media other than water are used, a different mechanical seal is required. When using water-glycol mixtures, the S1 variant equipped with the appropriate mechanical seal is generally recommended. Power supply
3~440 V ±10%, 50/60 Hz
3~400 V ±10%, 50/60 Hz
3~380 V -5% +10%, 50/60 Hz
EMC compliance without additional measures:
Interference emission for residential areas: EN 61800-3:2018
Interference immunity for industrial areas: EN 61800-3:2018
Protection class IP55
Nominal diameter DN 40 to DN 200
Max. operating pressure: 16 bar (up to +120 °C), 13 bar (up to +140 °C)

Materials

Pump housing and lantern: EN-GJL-250
Impeller
Standard version: EN-GJL-200
Special version: Bronze CuSn 10
Special version: Stainless steel 1.4408
Shaft: 1.4122
Mechanical seal: AQEGG; other mechanical seals available upon request

Type

Single-stage low-pressure centrifugal pump in in-line design, equipped with

Mechanical seal
Flange connection
Lantern
Coupling
Drive with integrated electronic speed control
Scope of delivery
Pump
Installation and operating instructions

Options

Version ...-R1 without differential pressure sensor
Version ...-L1 with bronze impeller (surcharge)
Version ...-L4 with stainless steel impeller (surcharge)

Accessories

1 bracket with mounting hardware for base installation
IR-Stick
IF-Module PLR ​​for connection to PLR/interface converter
IF-Module LON for connection to LONWORKS network
IF-Module BACnet
IF-Module Modbus
IF-Module CAN
VR-HVAC control system
CCe-HVAC control system
SCe-HVAC control system
Differential pressure sensor (DDG)