1. Introdução
The Viessmann 5021 Flickering Light Effect Circuit is designed to create realistic flickering light effects, ideal for simulating fire, welding, or other dynamic light sources in model train layouts, dioramas, and miniature scenes. This circuit operates on 16 Volts AC and supports up to 7 incandescent bulbs, including the provided yellow and red bulbs, to enhance the visual realism of your models.
2. Conteúdo da embalagem
Please verify that all items are present upon opening the package:
- Viessmann 5021 Flickering Light Effect Circuit
- 2 Yellow Incandescent Bulbs
- 1 Red Incandescent Bulb
- Manual do usuário (este documento)
3. Informações de segurança
- Always disconnect power before making any electrical connections or adjustments.
- This product is designed for use with 16 Volt AC power supplies only. Do not exceed the specified voltage.
- Certifique-se de que todas as conexões estejam seguras para evitar curto-circuitos.
- This product is intended for users aged 14 years and up. Keep out of reach of small children.
- Do not open the circuit housing. There are no user-serviceable parts inside.
4. Configuração e instalação
Follow these steps to properly install and connect your flickering light effect circuit:
- Conexão de energia: Connect your 16 Volt AC power supply to the input terminals labeled 'bn' (brown) and 'ge' (yellow) on the circuit board. Ensure the power supply is off during connection.
- Bulb Connection: The circuit supports up to 7 incandescent bulbs. Connect each bulb to a pair of the output terminals as indicated by the light bulb symbols on the circuit. The circuit is designed for bulbs such as Viessmann models 3501, 3502, or 3503. You can use a combination of the included yellow and red bulbs, or other compatible incandescent bulbs.
- Montagem: Secure the circuit in a suitable location within your model layout, ensuring it is protected from moisture and excessive heat.

5. Instruções de operação
Once the circuit and bulbs are connected:
- Ligar: Apply 16 Volt AC power to the circuit. The connected bulbs will begin to flicker, simulating a dynamic light effect.
- Ajuste de intensidade: The circuit features an 'Intensität' (intensity) control. Depending on the specific version of the circuit, this may be an internal potentiometer or a fixed setting. If adjustable, carefully turn the control to achieve the desired flickering speed and brightness variation.
- Observação: Observe the flickering effect and ensure it meets your aesthetic requirements for the model scene.
6. Manutenção
- Limpeza: Keep the circuit free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
- Armazenar: When not in use, store the circuit in a dry, cool place, away from direct sunlight and extreme temperatures.
- Substituição de lâmpada: If a bulb burns out, replace it with a compatible incandescent bulb of the correct voltage e wattage. Ensure power is disconnected before replacing bulbs.
7. Solução De Problemas
- No Light Effect:
- Check if the 16V AC power supply is connected correctly and is active.
- Verify that all bulb connections are secure and that the bulbs are not burnt out.
- Garantir o volume de entradatage is 16V AC. Incorrect voltage can prevent operation.
- Cintilação inconsistente:
- If an intensity adjustment is present, try adjusting it.
- Ensure the power supply is stable and providing consistent voltage.
- Only Some Bulbs Flicker:
- Check the connections for the non-flickering bulbs.
- Replace the non-flickering bulbs to rule out a faulty bulb.
If you encounter issues not covered here, please refer to the support section.
8. Especificações
| Marca | Viessmann |
| Número do modelo | 5021 |
| Volumetage | 16 Volts (CA) |
| Light Color (Included Bulbs) | Vermelho, Amarelo |
| Maximum Bulbs Supported | 7 |
| Material | Plástico |
| Dimensões do produto | 4.21 x 2.2 x 0.91 polegadas |
| Peso do item | 2.08 onças |
| Idade Recomendada | 14 anos ou mais |
9. Garantia e Suporte
For warranty information or technical support, please contact your retailer or the manufacturer, Viessmann, directly. Keep your proof of purchase for any warranty claims.





