Wilo-Star-Z
Wilo-Star-Z20/1
Your advantages
- AC pumps with electrical quick connection
- All components that come in contact with the fluid comply with the latest directives.
Recommended services
Wilo-Star-Z
Design
Glandless circulator with threaded connection
Application
Domestic hot water circulation systems in building services and industry.
Equipment/function
Operating modes
- Speed stage switching (Star-Z...-3 only)
Manual functions
- Setting of the speed stages (1 speed stage, 3 speed stages with Star-Z...-3 pumps)
Equipment
- Wrench attachment point on the pump body (Star-Z 25 only)
- Cable inlet possible from both sides
- quick connection with spring clips
- Blocking-current proof motor
Typekey
Example: | Wilo-Star-Z 20/1 |
Star | Standard pump |
Z | Circulation pump |
20/ | Nominal connection diameter |
1 | Nominal delivery head [m] |
Technical data
- Constant speed or, for Star-Z...-3, three selectable speed stages
- 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 G1, G1¼, G1½
- Max. operating pressure 10 bar
Materials
- Pump housing: Bronze
- Impeller: Plastic
- Shaft: Oxide ceramic
- Bearing: Carbon, synthetic resin impregnated
Scope of delivery
- Pump
- Gaskets for threaded connection
- Installation and operating instructions
Accessories
- Screwed connections
- Adapter fittings
- Thermal insulation shells for Star-Z 20, 25
- Special brass inserted parts for screw-end pumps: Male thread/inner soldering connection
- Wilo-S1R-h switchgear plug-in module for Star-Z 20/1, Z 25/2 EM (single-phase version)
- Wilo-SK 601N switchgear in connection with Wilo-SK 602N (as contactor) for Star-Z 25/2 DM (three-phase version)
- Wilo-SK 601N switchgear for timed On/Off switching for Star-Z 20, 25
Installation and operating instructions
Wilo-Star-Z/-ZD
| Article Number | 4236978 |
| Edition | 2019-08 |
| Number of pages | 184 |
| Language | ar, cs, de, el, en, es, fr, it, pl, ru, sv |
PDF (5 MB)Group Statement
Group Statement REACH
| Edition | 2021-05 |
| Number of pages | 5 |
| Language | language neutral |
PDF (327 KB)| Product description | Pump connection | Port-to-port length L0 | Maximum operating pressure PN | Mains connection | Gross weight, approx. m | Pieces per pallet | Article number | |
|---|---|---|---|---|---|---|---|---|
Star-Z 20/1 | G 1 | 140 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4028111 | |
Star-Z 20/1(15-130) | G 1 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232172 | |
Star-Z 20/1-3(15-130) | G 1 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232178 | |
Star-Z 20/2-3(15-130) | G 1 | 130 mm | 10 bar | 1~230 V, 50 Hz | 2.3 kg | 256 | 4232196 | |
Star-Z 20/4-3 | G 1¼ | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.4 kg | 256 | 4081193 | |
Star-Z 20/5-3 | G 1¼ | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4081198 | |
Star-Z 20/5-3(158) | G 1¼ | 158 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4232265 | |
Star-Z 20/7-3 | G 1¼ | 150 mm | 10 bar | 1~230 V, 50 Hz | 2.9 kg | 256 | 4081203 | |
Star-Z 25/2 | G 1½ | 180 mm | 10 bar | 1~230 V, 50 Hz | 2.5 kg | 256 | 4029062 | |
Star-Z 25/6-3 | G 1½ | 180 mm | 10 bar | 1~230 V, 50 Hz | 2.7 kg | 256 | 4047573 |