Small Twin Head Wilo Recirculating Pump For Heating Chilled Water And Cooling System

Electronically controlled glanded twin-head pump in in-line design with flange connection and automatic power adjustment

Pumping of heating water (acc. to VDI 2035), chilled water and water/glycol mixtures without abrasive substances in heating, chilled water and cooling systems.

Operating modes

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

Manual operation level

• Green button and display

Manual functions

• Differential pressure setpoint setting
• Setting the speed (manual control mode)
• Setting the operating mode
• Setting the pump ON/OFF
• Configuration of all operating parameters
• Fault acknowledgement

External control functions

• "Overriding Off" control input
• “External pump cycling” control input (effective only in dual pump operation)
• Analogue input 0 – 10 V, 0 – 20 mA for constant speed (DDC) and remote setpoint adjustment
• Analogue input 2 – 10 V, 4 – 20 mA for constant speed (DDC) and remote setpoint adjustment
• Analogue input 0 – 10 V for actual value signal from pressure sensor
• Analogue input 2 – 10 V, 0 – 20 mA, 4 – 20 mA for actual value signal from pressure sensor

Signal and display functions

• Collective fault signal SSM
• Collective run signal SBM

Data exchange

• Infrared interface for wireless data exchange with IR-Monitor/IR-Stick
• Plug-in position for Wilo IF-Modules (Modbus, BACnet, CAN, PLR, LON) for connection to building automation

Safety functions

• Full motor protection with integrated trip electronics
• Access disable

Dual pump management (double pump or 2 x single pumps)

• Main/standby operation (automatic fault-actuated switchover)
• Pump cycling main/standby operation after 24 hours
• Parallel operation
• Parallel operation (efficiency-optimised peak-load activation and deactivation)