Wilo-Star-ZD
Glandless twin-head circulator with threaded connection; preselectable speed stages for power adjustment.
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Advantages
- Twin-head pump for single or parallel operation
- Suitable for every installation position with horizontal shaft; terminal box in 3-6-9-12 o’clock position
- Internal bypass circulation, which prevents legionella growth in the standby unit
- Increased reliability in individual operation due to the constant availability of a standby unit ready for operation
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Technical Features
Design
Glandless twin-head circulator with threaded connection; preselectable speed stages for power adjustment.
Application
- Domestic hot water circulation systems in industry and building services.
Typekey
Example: Wilo-Star-ZD 25/6 Star-ZD Double circulation pump for drinking water 25/ Nominal connection diameter Technical data
- Fluid temperature
- Drinking water up to 3.21 mmol/l (18 °dH): max. +65 °C, in short-time duty (2 h) up to +70 °C
- Mains connection 1~230 V, 50 Hz
- Protection class IP44
- Nominal diameter G1½
- Max. operating pressure 10 bar
Equipment/function
Operating modes
- Speed-stage switching
Manual functions
- Setting the speed stages (3 speed stages)
Equipment
- Double switchover valve in pump housing
- Cable inlet in possible on both sides
- Internal bypass
- quick connection with spring clips
- Blocking-current proof motor
Materials
- Pump housing: red brass
- Impeller: Plastic
- Shaft: Ceramic
- Bearing: Carbon, synthetic resin-impregnated
Accessories
- Screwed connections
- Downloads
