Commercial Hot Water Centrifugal Circulation Pump Wilo Yonos PICO-ZD

Glandless twin-head circulator with screwed connection, blocking-current proof EC motor and integrated electronic power control.

Domestic hot water circulation systems in building services and industry.

Operating modes

• Δp-c for constant differential pressure
• Constant speed (3 constant speed stages)
• Constant speed (continuously adjustable)

Manual functions

• Setting the operating mode
• Setting of pump output (delivery head)
• Setting the constant speed (continuous or fixed)
• Pump venting function
• Manual restart

Automatic functions

• Continuous power adjustment depending on the operating mode
• Automatic restart
• Automatic dry-running detection

Signal and display functions

• Display of the current power consumption in W
• Display of the current volume flow in m³/h
• Displays during setting:
  • Delivery head in m
  • Constant speed (c1, c2; c3)
  • Speed during continuous adjustment (n/100)
• Display of fault messages (error codes)
• Display of manually activated restart or pump venting function

Equipment

• Quick electrical connection with Wilo-Connector
• Blocking-current proof motor
• Particle filter

Twin-head pump function

• Main/standby mode (automatic fault-actuated switchover/time-dependent pump cycling). If the twin-head pump is to be operated in main/standby operation, the control mode and the delivery head or speed stage must be set so they are identical.
• Parallel operation (efficiency-optimised peak load activation and deactivation). If the twin-head pump is to be operated in parallel/peak-load operation, the control mode and the delivery head or speed stage must be set so they are identical.
• An additional switchgear is required for switching the pumps, e.g. in the event of a fault.