1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Bosch Bathroom Fan 1500 DH W 125. This powerful and quiet extractor fan is designed to effectively manage humidity, eliminate unpleasant odors, and prevent mold growth in bathrooms and toilets. It features an adjustable humidity sensor and a customizable timer for optimal performance.
Please read this manual thoroughly before installation and use, and retain it for future reference.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the product:
- Ensure the power supply is disconnected before any installation, maintenance, or cleaning procedures.
- Installation must be performed by a qualified electrician in accordance with local wiring regulations and standards.
- Do not install the fan in areas where it may be directly exposed to water jets or excessive splashing beyond its IPX4 rating.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Keep children supervised to ensure they do not play with the appliance.
- Ensure proper ventilation is maintained in the room to prevent backflow of gases from open-flued appliances.
3. Package Contents
Verify that all items listed below are present in your product packaging:
- Bosch Bathroom Fan 1500 DH W 125
- Assembly Instructions
- Screws and Wall Plugs for fixing
4. Setup and Installation
The Bosch Bathroom Fan 1500 DH W 125 is designed for straightforward wall mounting. Please follow these steps carefully:
- Preparation: Ensure the power supply to the installation area is completely disconnected. A 127mm diameter hole is required for the fan's 125mm duct.
- Mounting Location: This fan is designed for wall mounting only. It cannot be mounted on the ceiling.
- Secure Mounting: Use the provided screws and wall plugs to securely fix the fan to the wall. The fan's dimensions are approximately 188mm x 188mm (front panel) with a duct diameter of 125mm and a depth of 77mm.
- Electrical Connection: Connect the fan to the electrical supply according to the wiring diagram provided in the separate assembly instructions. Ensure all connections are secure and insulated.
- Final Assembly: Once wired, attach the front panel.
Visual Aid for Installation:
Image: Detailed diagram illustrating the dimensions and components for easy installation.
Image: Technical drawing providing precise measurements of the fan's various parts.
5. Operating Instructions
The Bosch Bathroom Fan 1500 DH W 125 is designed for convenient and automatic operation to maintain optimal air quality.
5.1. Humidity Sensor Operation
The integrated humidity sensor automatically activates the fan when the ambient humidity level exceeds a preset threshold. This threshold can be adjusted between 40% and 90% relative humidity. The fan will continue to operate until the humidity drops below the set level, ensuring effective moisture removal.
5.2. Timer Function
The fan features an adjustable timer that allows it to continue running for a set period after the light switch is turned off. The delay time can be adjusted between 3 and 30 minutes, providing additional ventilation to clear residual moisture and odors.
How to Adjust Settings: Refer to the detailed wiring and adjustment instructions provided with the product for specific guidance on setting the humidity threshold and timer delay. These adjustments typically involve small potentiometers located behind the front panel.
Demonstration of Humidity Sensor and Timer (W100 Model):
Video: This video demonstrates the operation of the humidity sensor and timer functions on a similar Bosch Thermotechnik Fan 1500DH W100 model. It illustrates how the fan activates based on humidity levels and continues to run for a set duration after the humidity drops.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Bosch Bathroom Fan.
- Cleaning: Periodically clean the exterior of the fan with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Internal Cleaning: For internal cleaning, disconnect the power supply. Carefully remove the front panel and gently clean the fan blades and interior with a soft brush or cloth. Ensure no water enters the electrical components.
- Inspection: Regularly inspect the fan for any signs of damage, loose connections, or unusual noises. If any issues are detected, disconnect power and contact a qualified technician.
7. Troubleshooting
If you encounter issues with your Bosch Bathroom Fan, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | No power supply. Humidity level below threshold. Faulty wiring. | Check circuit breaker. Increase humidity or adjust sensor threshold. Consult a qualified electrician. |
| Fan runs continuously. | Humidity level consistently high. Timer setting incorrect. Faulty humidity sensor. | Ensure proper room sealing. Adjust timer setting. Contact support for sensor replacement. |
| Excessive noise during operation. | Loose components. Obstruction in fan blades. Motor issue. | Check for loose screws. Disconnect power and clear any obstructions. Contact support. |
| Poor ventilation performance. | Blocked ducting. Incorrect fan size for room. Dirty fan blades. | Inspect and clear ducting. Ensure fan is appropriate for room volume. Clean fan blades. |
If the problem persists after attempting these solutions, please contact Bosch customer support.
8. Specifications
Key technical specifications for the Bosch Bathroom Fan 1500 DH W 125:
- Model Number: 7738335627
- Brand: Bosch Thermotechnik
- Color: White
- Fan Type: Extractor
- Power Source: Electric Cable
- Special Features: Humidity Sensor, Adjustable Timer, Anti-return Valve
- Recommended Use: Humidity control in bathrooms
- Mounting Type: Wall Mount (not suitable for ceiling mounting)
- Duct Diameter: 125 mm (requires 127mm hole)
- Airflow Rate: 182 m³/h
- Noise Level: 45 dB(A) at 3m (may vary in tiled rooms due to sound reflection)
- Product Dimensions (approx.): 188mm (width) x 188mm (height) x 77mm (depth of duct)
Product Overview:
Image: Front view of the Bosch Bathroom Fan 1500 DH W 125.
Image: Key features of the fan, including humidity sensor, timer, and diameter.
Image: Diagram illustrating the fan's efficient air extraction and anti-return valve.
9. Warranty and Support
Your Bosch Bathroom Fan 1500 DH W 125 comes with a standard manufacturer's warranty. Please refer to the warranty card included in your packaging for specific terms and conditions, including the warranty period and coverage details.
For technical support, spare parts, or warranty claims, please contact Bosch customer service. You can find contact information on the Bosch Thermotechnik website or in your product documentation.
For more information about Bosch Thermotechnik products, visit the official Bosch Thermotechnik Store on Amazon.