HVAC / Heaters & Fireplaces
Installation Guide for Terma Alex ONE 1140x500mm Electric Towel Rail
A comprehensive installation guide for the Terma Alex ONE 1140x500mm electric towel rail. This manual covers wall preparation, mounting procedures, connection requirements, and maintenance tips to ensure safe and efficient operation.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
Before starting the installation of your Terma Alex ONE 1140x500mm electric towel rail, ensure you have read the full instructions. The radiator is designed for closed heating systems. Ensure a minimum clearance of 100 mm from the floor to maximize heat efficiency. Note that valves are not provided and you will need standard 1/2" radiator valves.
Installation Preparation
Check that all parts listed in the fixing kit are present before starting. The supplied plugs are intended for hard masonry walls only; ensure they are suitable for your specific wall type. Before drilling, always check for hidden wires or pipes.
Mounting Instructions
Follow these steps to mount the radiator:
- Mark the position of the brackets on the wall based on the distances between bracket centres.
- Drill holes to a depth of approximately 80 mm using a 10 mm drill bit.
- Insert the rawl plugs (1) into the holes.
- Attach the mounting bracket-1 (3) using the connecting screw and washer (2).
- Guide the radiator brackets into the mounting brackets (3) and fix them securely with the connecting screws (4).
Connection and Commissioning
Connect the water flow using appropriate 1/2" BSP valves, following the valve manufacturer's guidelines. Once connected, fill the radiator and purge any trapped air using the bleed valve located at the top of the radiator.
Maintenance
Wipe the radiator down using a clean, damp cloth. Never use scourers or abrasive cleaning agents, as these can damage the finish.
Practical help
Common problems
Radiator not heating
Ensure the system is properly filled and that all trapped air has been purged via the bleed valve at the top of the radiator.
Mounting instability
Ensure the wall is hard masonry. The supplied plugs are not suitable for other wall types (e.g., plasterboard). Use appropriate fixings for your wall type.
Before use
- Verify all parts are present (rawl plugs, screws, brackets, allen key).
- Ensure you have 1/2 inch BSP radiator valves (not included).
- Check for hidden wires or pipes before drilling.
- Confirm wall type is suitable for supplied plugs.
- Ensure at least 100 mm clearance from the floor.
Specs in practice
- 10 mm drill bit
- Required for drilling holes for the rawl plugs.
- 1/2 inch BSP
- Standard size for the required radiator valves.
Images and diagrams
- Page 1 illustrates the fixing kit contents and dimensions.
- Page 2 provides a 7-step visual guide for the mounting process, including drilling, bracket installation, and final assembly.
Model compatibility
- Designed for closed heating systems.
- Requires standard 1/2 inch radiator valves (not provided).
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.