1. Introdução
The Wilo Star S 33 FC 4190420 is a three-speed hydronic radiant floor circulating pump designed for efficient water circulation in various heating applications. Its robust cast iron housing and built-in motor protection ensure long life and reliable performance. This pump is suitable for closed-loop radiant heating, snow melting systems, baseboard, radiator, and fan coil heating applications.
Os principais recursos incluem:
- Fixed flanges for secure installation.
- Cast iron housing with built-in motor protection.
- Versatile application across radiant heating, hydronic heating, fan coil heating, and solar systems.
- Whisper-quiet operation, ideal for sound-sensitive environments.
- Includes two gaskets (O-rings) and a removable check-valve.
- UL/CSA listed for safety and compliance.
2. Informações de segurança
AVISO: To reduce the risk of electric shock, consult the instruction manual for proper installation and operation. Always disconnect power before servicing the pump.
CUIDADO: The pump surface can become QUENTE during operation. Avoid direct contact to prevent burns. Allow the pump to cool before handling or performing maintenance.
- Certifique-se de que todas as conexões elétricas estejam em conformidade com os códigos e regulamentos locais.
- This pump is designed for indoor use only.
- Não opere a bomba sem água.
- Somente pessoal qualificado deve realizar a instalação e manutenção.
3. Produto acabadoview e Componentes

Figure 1: Wilo Star S 33 FC Circulating Pump. This image shows the main body of the pump, its electrical connection box, and the speed selection dial. The green cast iron housing is visible, along with the product label detailing specifications and warnings.
The Wilo Star S 33 FC pump consists of several key components:
- Cast Iron Housing: The main green body of the pump, providing durability and heat dissipation.
- Motor: Integrated within the housing, providing the power for circulation.
- Speed Selection Dial: Located on the front label, allowing selection between three speeds (1, 2, 3) and an "eco" mode.
- Electrical Connection Box: Black box on the side for power input.
- Fixed Flanges: Connection points for plumbing lines.
- Built-in Removable Check Valve: Helps prevent backflow in the system.
4. Instalação e configuração
Proper installation is crucial for the pump's performance and longevity. Refer to local plumbing and electrical codes.
- Montagem: Securely mount the pump using its fixed flanges in the designated location within your hydronic system. Ensure the pump is installed in a horizontal position with the motor shaft horizontal to prevent air pockets.
- Conexões de encanamento: Connect the system piping to the pump's flanges. Use the provided gaskets (O-rings) to ensure a watertight seal. Avoid overtightening connections.
- Fiação elétrica:
- Certifique-se de que a fonte de alimentação esteja desconectada antes de fazer a fiação.
- Connect the pump to a 115-Volt (AC), 60Hz power supply. The pump draws a maximum of 1.5A.
- Follow the wiring diagram provided inside the electrical connection box.
- Garanta um aterramento adequado para evitar riscos elétricos.
- Enchimento e purga do sistema: After installation, fill the hydronic system with water and thoroughly purge any air from the system. Air in the system can cause noise and reduce pump efficiency.
5. Instruções de operação
The Wilo Star S 33 FC features a three-speed motor, allowing you to adjust the pump's performance to match your system's requirements.
- Ligar: Once installed and the system is filled, restore power to the pump.
- Seleção de velocidade: Locate the speed selection dial on the front of the pump (refer to Figure 1). The dial has settings for "max", "3", "2", "1", and "eco".
- Speed 3 (Max): Provides the highest flow rate and pressure. Power consumption is approximately 202W.
- Velocidade 2: Medium flow rate and pressure. Power consumption is approximately 143W.
- Velocidade 1 (Eco): Lowest flow rate and pressure, designed for energy efficiency. Power consumption is approximately 98W.
- Válvula de retenção: The built-in check valve can be removed if not required by your system design. Consult your HVAC professional if unsure.
6. Manutenção
The Wilo Star S 33 FC pump is designed for minimal maintenance. However, periodic checks can ensure optimal performance and extend its lifespan.
- Inspeção anual: Annually inspect the pump for any signs of leaks, corrosion, or unusual noises.
- Qualidade da água do sistema: Ensure the hydronic system water quality is maintained according to industry standards to prevent scale buildup and corrosion within the pump and piping.
- Limpeza: Mantenha a parte externa da bomba limpa e livre de poeira e detritos para garantir a dissipação adequada de calor.
- Winterização: If the system is shut down for an extended period in freezing temperatures, ensure the pump and system are properly drained to prevent freeze damage.
7. Solução De Problemas
Consulte a tabela a seguir para obter informações sobre problemas comuns e suas possíveis soluções.
| Problema | Possível causa | Solução |
|---|---|---|
| A bomba não inicia | No power supply; Motor overload; Impeller jammed. | Check power connection and circuit breaker; Allow motor to cool; Disconnect power and check for obstructions in impeller. |
| Fluxo insuficiente | Air in system; Incorrect speed setting; Clogged filter/piping. | Purge air from system; Increase speed setting; Check and clean filters or piping. |
| Operação barulhenta | Air in system; Cavitation; Loose mounting. | Purge air from system; Ensure adequate system pressure; Check mounting bolts for tightness. |
| Vazamentos da bomba | Loose connections; Damaged gaskets/seals. | Tighten connections; Replace gaskets or seals. |
If the problem persists after attempting these solutions, contact a qualified service technician or Wilo customer support.
8. Especificações
| Atributo | Detalhe |
|---|---|
| Número do modelo | 4190420 |
| Marca | Wilo |
| Material | Ferro fundido |
| Volumetage | 115 Volts (CA) |
| Freqüência | 60 Hz |
| Sorteio máximo atual | 1.5 Amps |
| Consumo de energia (velocidade 3) | 202 Watts |
| Consumo de energia (velocidade 2) | 143 Watts |
| Power Consumption (Speed 1/Eco) | 98 Watts |
| Peso do item | 9.46 libras (4.3 kg) |
| Dimensões da embalagem | 7.4 x 7.24 x 5.12 polegadas |
| Classe de gabinete | CSA enclosure 2 |
| Classe de isolamento | Classe F |
| Máx. Temperatura da água | 230°F (110°C) |
| Pressão Máx. de Trabalho | 145 PSI (10 bar) |
| Certificações | Listado pela UL/CSA |
9. Garantia e Suporte
Wilo products are manufactured to high standards and come with a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Wilo website.
For technical support, troubleshooting assistance, or to inquire about replacement parts, please contact Wilo customer service. Contact information can typically be found on the Wilo webno site ou no seu recibo de compra.
Wilo Official Website: www.wilo.com





