- Wilo-Star-Z NOVA 1.0 A circulating pump for hot water in small domestic installations. Glandless design with wet impeller, bronze body for potable water, for continuous operation.
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Wilo-Star-Z NOVA A - circulation pump for domestic hot water systems
Wilo-Star-Z NOVA A is a compact, glandless circulator for domestic hot water systems in single-family homes, providing high comfort of hot water availability with low energy consumption. Thanks to its proven wet impeller design and materials approved for contact with drinking water, the pump guarantees reliable and hygienic water circulation.
- Maintenance-free glandless pump with wet impeller for hot water circulation
- High energy efficiency due to low power consumption
- Pump body made of corrosion-resistant bronze for drinking water
- Easy installation in existing installations thanks to standard connections
- Quiet operation and compact dimensions for easy installation
- Design suitable for long-term, continuous operation in domestic installations
Applications and benefits
The Wilo-Star-Z NOVA A is designed to circulate hot water in small installations, especially in single-family homes, segments and small residential buildings. It provides quick access to hot water at points of use, reducing unnecessary draining of cold water before hot water arrives and improving comfort. The pump is suitable for use with typical hot water storage tanks and heaters, operating continuously or according to the set control logic of the system.
Thanks to its compact design and standard mounting dimensions, the pump can replace earlier circulation models in retrofitted installations. The glandless design reduces maintenance requirements, and the materials used meet domestic water hygiene requirements. Quiet operation translates into high acoustic comfort, especially important in small residential buildings.
Design and materials
The Wilo-Star-Z NOVA A pump is a glandless pump with a wet impeller, in which the impeller and shaft are washed by the pumped water. The pump body is made of corrosion-resistant bronze for contact with domestic water. Internal hydraulic components, such as the impeller, are made of durable engineering plastics suitable for operation at elevated water temperatures.
The pump's spigots have standard dimensions for easy installation in typical hot water systems. Seals have been selected for resistance to the temperature of domestic water and many years of expLoatation. The motor is adapted for single-phase operation and ensures stable operation over the entire range of permissible installation parameters.
ExpLoatation, safety and installation
The pump is designed for permanent installation in the hot water circulation line. It can operate continuously according to the requirements of the installation, and thanks to its simple design, it enables quick start-up after installation. The electrical enclosure provides an adequate degree of protection, allowing installation in typical technical rooms of the building.
During installation, attention must be paid to the correct positioning of the pump in the line, venting of the system, and compliance with the conditions of permissible pressure and temperature. Glandless design and material configuration of the pump are selected to reduce the risk of scaling and wear of hydraulic components when exspLoatation with utility water of typical quality parameters.
| Parameter | Wilo-Star-Z NOVA A |
|---|---|
| Pump type | Glandless circulation pump with wet impeller for domestic hot water |
| Application | Domestic hot water circulation systems in single-family houses and small residential buildings |
| Conveying medium | Domestic hot water (drinking water) according to hygienic requirements |
| Scope of application | Circulation in small domestic hot water systems with typical storage tanks and heaters |
| Motor type | Electric motor suitable for single-phase mains operation |
| Impeller type | Medium-washed wet impeller, made of engineering plastic |
| Pump casing | Corrosion-resistant bronze, approved for drinking water |
| Hydraulic components | Durable engineering plastics designed for elevated water temperatures |
| Hydraulic connections | Standard threaded connections for installation in the circulation line |
| Application for buildings | Single-family houses, small residential buildings and similar facilities |
| Operation mode | Continuous operation or according to the control logic of the system |
| Operating characteristics | Adapted to the required circulation flow in small installations |
| Noise level | Design for quiet operation in domestic installations |
| Maintenance | Glandless design, no typical maintenance work with normal expLoatation |
| Installation conditions | Installation in the DHW circulation line, proper venting and orientation of the pump |
| Corrosion resistance | Bronze body resistant to corrosion under typical operating conditions of the DHW system. |
| Material purpose | Materials in contact with water meet the requirements for domestic water |
| Electrical requirements | Power supply from typical single-phase mains in accordance with nameplate data |
| Compliance with standards | Design in accordance with the requirements for domestic water circulators |
The Wilo-Star-Z NOVA A is a reliable circulator designed for the comfort of users of domestic hot water systems. Thanks to its refined design and properly selected materials, it provides durable, quiet and hygienic operation under typical conditions expLoatation.
Compact dimensions, standard connections and maintenance-free design make the pump easy to install in both new and retrofitted installations, ensuring constant availability of hot water with efficient use of energy.
FAQ (customer)
- What is the main appLication of the Wilo-Star-Z NOVA A pump? The pump is designed for domestic hot water circulation in small installations such as single-family houses to ensure quick availability of hot water at tapping points.
- Can I install this pump in an existing hot water system? Yes, the pump has standard connection dimensions, making it suitable for repLacement or retrofitting in existing circulation lines.
- Is the pump suitable for drinking water? Yes, the hydraulic parts and the bronze pump housing are designed and approved for use with potable water.
- Does the pump require regular maintenance? The pump is a glandless, wet-rotor design intended for largely maintenance-free operation under normal conditions.
- Is the operation of the pump noisy? The compact wet-rotor design ensures quiet operation, which is particularly advantageous in residential buildings.
- Can the pump operate continuously? The pump is suitable for continuous operation as typically required in domestic hot water circulation systems, subject to the specified operating limits.
FAQ (expert)
- What type of fluid is approved for the Wilo-Star-Z NOVA A? The pump is approved for domestic hot water appLications using potable water that meets common drinking water standards.
- How should the pump be positioned in the pipework? The pump must be installed in the circulation line according to the indicated flow direction and in a position that allows proper venting of the system.
- Are there specific requirements regarding water quality? Water should compLy with typical potable water specifications; excessive hardness or contamination may increase scaling and wear, so treatment may be necessary in critical cases.
- What are the electrical suppLy requirements? The motor is designed for single-phase operation; the installer must follow the data on the namepLate and local electrical regulations.
- How does the wet-rotor design affect serviceability? The wet-rotor concept minimizes separate shaft sealing components, reducing potential leakage points and typical seal-related maintenance.
- Is the pump compatible with time or demand controls? The pump can be integrated into systems with external control strategies such as time switches or building automation, as long as switching compLies with the electrical ratings.
Reviews
- The pump delivers hot water quickly throughout my house and runs very quietly.
- SimpLe installation and compact design made repLacement of the old circulation pump straightforward.
- After several months of operation, the pump works reliably without any noticeable issues.
- Energy consumption is low, which is important for a device that operates many hours a day.
- The bronze housing feels robust and well-made, giving confidence in long-term durability.
- Hot water is now available almost instantly at distant taps, improving comfort significantly.
- The pump integrates well with my existing hot water storage tank and piping layout.
- Noise levels are minimal; the pump is practically inaudible in the technical room.
- From an installer perspective, the standardized connections and clear design reduce installation time.
- Overall, this model offers a good balance between performance, quality and operating cost.



