DHW circulation pump Wilo Star-Z 20/4 EM

Circulating pump for hot water system Wilo Star-Z 20/4 EM

Wilo STAR-Z circulation pumps circulate water in heating, hot water and floor heating systems. Wilo STAR-Z circulation pumps are quite compact and lightweight, installed directly on the pipeline and operate almost silently. Suitable for systems of almost all private houses, not easy to install and have a long service life. The installation of the Wilo STAR-Z electronic high-efficiency pump saves up to 90% of energy compared to an unregulated circulation pump. If you use the Wilo STAR-Z pump in the hot water supply system, then the energy savings compared to standard circulation pumps will be 80%. Pumps of this line are designed for installation in private houses and cottages.

Features and benefits of Wilo Star-Z circulation pumps:

• All plastic parts that come into contact with the pumped medium are approved for use in the drinking water supply
• Standard thermal insulation for Star-Z 15 TT
• Wilo Star-Z with integrated timer and thermostat, LC display with symbolic language, red button technology and automatic recognition of the thermal disinfection of the drinking water tank, as well as a ball valve on the suction side and a non-return valve on the pressure side

Equipment and material of the Wilo Star-Z pumps:

• Turnkey drain on pump housing (only Wilo Star-Z 25 )
• Cable entry possible on both sides (only Wilo Star-Z 20 , Wilo Star-Z 25 )
• Quick connection with spring terminals
• Blocking current-resistant motor
• Integrated non-return valve on the pressure side (only Wilo Star-Z 15 TT )
• Integrated ball shut-off valve (only Wilo Star-Z 15 TT )
• With timer (only Wilo Star-Z 15 TT )
• Pump housing: Brass: Wilo Star-Z 15 , Bronze: Wilo Star-Z 20 , Wilo Star-Z 25
• Impeller: synthetic material
• Shaft: stainless steel: Wilo Star-Z 15 , oxide ceramics: Wilo Star-Z 20 , Wilo Star-Z 25
• Bearings: graphite impregnated with synthetic resin