1. Introduction
Thank you for choosing the Acova Cala+Air Central Heating Towel Dryer. This manual provides essential information for the safe installation, operation, and maintenance of your new towel dryer. Please read this manual thoroughly before installation and keep it for future reference.
The Acova Cala+Air is designed to provide efficient heating for your bathroom and warm towels, combining central heating functionality with an integrated electric boost for additional warmth when needed.
2. Important Safety Information
Always observe the following safety precautions to reduce the risk of fire, electric shock, injury, or damage to the product.
- Installation must be performed by a qualified professional in accordance with local building and electrical regulations.
- Ensure the power supply is disconnected before any installation or maintenance work.
- Do not operate the towel dryer if it is damaged.
- Keep children and pets away from the appliance during operation.
- Do not cover the towel dryer with clothing or other materials, except for towels intended for warming.
- The surface of the towel dryer can become hot during operation. Avoid prolonged contact.
- This appliance is intended for domestic use only.
3. Setup and Installation
The Acova Cala+Air towel dryer requires professional installation due to its connection to both the central heating system and the electrical supply.
3.1 Unpacking
Carefully remove the towel dryer from its packaging. Inspect for any signs of damage. Retain packaging materials for potential future transport or returns.
3.2 Mounting Location
Choose a suitable wall in your bathroom, ensuring it can support the weight of the unit (26.5 kg) when filled with water. The location should comply with local electrical safety zones for bathrooms.

Image: Front view of the Acova Cala+Air Central Heating Towel Dryer. This image shows the overall design, including the vertical collectors and horizontal heating bars, finished in white.
3.3 Central Heating Connection
Connect the towel dryer to your central heating system using appropriate plumbing fittings. Ensure all connections are watertight and tested for leaks before commissioning.
3.4 Electrical Connection
The integrated electric boost requires a dedicated electrical connection. This must be wired by a qualified electrician to a suitable fused spur, adhering to all local electrical codes and regulations.
4. Operating Instructions
The Acova Cala+Air offers dual heating functionality: central heating and an electric boost.
4.1 Central Heating Operation
The central heating function operates in conjunction with your home's main heating system. When your central heating is active, hot water will circulate through the towel dryer, providing warmth to the room and heating towels.
- Ensure the valves connecting the towel dryer to the central heating system are open.
- Control the central heating function via your home's thermostat or boiler controls.
4.2 Electric Boost Operation
The electric boost provides independent heating, useful when the central heating is off or for additional rapid warmth. The electric element is typically controlled by a switch or thermostat located on the unit or a wall-mounted controller.
- Locate the electric boost control (e.g., a switch or dial).
- Turn the electric boost ON to activate the electric heating element.
- Adjust the temperature if a thermostat is present.
- Turn the electric boost OFF when not required.
Refer to the specific electric element's manual for detailed instructions on its controls and features (e.g., timer functions).
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your Acova Cala+Air towel dryer.
5.1 Cleaning
Clean the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
5.2 Bleeding the Radiator
If the towel dryer feels cold at the top but warm at the bottom, it may contain trapped air. This requires bleeding the radiator.
- Ensure the central heating system is running and the towel dryer is hot.
- Using a radiator key, slowly open the bleed valve located at the top of the towel dryer.
- Hold a cloth or container beneath the valve to catch any water.
- Air will hiss out. Once water starts to come out steadily, close the valve.
- Check the pressure of your central heating system and top it up if necessary.
Caution: The water can be hot. Use protective gloves.
6. Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Towel dryer not heating (central heating) | Central heating system off; valves closed; trapped air. | Check central heating system; open valves; bleed radiator (see Section 5.2). |
| Towel dryer not heating (electric boost) | Electric boost switch off; power supply issue; faulty element. | Ensure electric boost is ON; check circuit breaker; contact qualified electrician. |
| Uneven heating (cold at top) | Trapped air in the system. | Bleed the radiator (see Section 5.2). |
| Leaking from connections | Loose fittings; damaged seals. | Tighten connections (do not overtighten); replace seals if necessary. Contact a plumber. |
If you are unable to resolve an issue, please contact a qualified professional or Acova customer support.
7. Technical Specifications
| Model | LN-180-050-IFS |
| Brand | ACOVA |
| Dimensions (H x W x D) | 1798 mm x 496 mm x 128 mm (projection) |
| Weight (empty) | 26.5 kg |
| Material | Steel |
| Color | White |
| Heating Type | Central Heating (Hot Water) with Electric Boost |
| Central Heating Output (ΔT50) | 973 W |
| Central Heating Output (ΔT30) | 522 W |
| Electric Boost Power | 1000 W |
| Max Operating Pressure | 4.0 bar |
8. Warranty and Support
8.1 Product Warranty
The Acova Cala+Air Central Heating Towel Dryer (Model LN-180-050-IFS) is covered by a 5-year warranty from the date of purchase. This warranty covers manufacturing defects and material faults under normal use and service conditions. It does not cover damage resulting from improper installation, misuse, neglect, accident, or unauthorized modifications.
Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For technical assistance, spare parts, or warranty claims, please contact your retailer or Acova customer service. You can find contact information on the official Acova website or your purchase documentation.
When contacting support, please have your model number (LN-180-050-IFS) and date of purchase readily available.