HVAC / Towel Warmers
Terma ROLO Central Heating Radiator Installation Guide
Quick installation guide for the Terma ROLO central heating radiator. Learn how to correctly orient the unit, install the flow diverter plug for portrait or landscape mounting, and commission the system.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Terma ROLO radiator requires specific installation steps to ensure proper water flow and even heat distribution. The most critical component is the threaded plug, which acts as a flow diverter. You will need an 8mm Allen key (not supplied) to install this plug. Always check the orientation stickers on the product to identify the top before mounting.
Orientation and installation
Before mounting the radiator, identify the correct orientation:
- Look for the removable stickers on the product indicating the top.
- For vertical bar orientation (portrait), follow the TOP label for C/Heating.
- For horizontal bar orientation (landscape), follow the TOP label for C/Heating.
Installing the flow diverter plug
The threaded plug must be installed to force water flow through the radiator bars.
- Portrait mounting: The threaded plug must be screwed into the FLOW side. You may choose to have the flow on either the left or right-hand side.
- Landscape mounting: The threaded plug must be screwed into the left-hand side of the radiator.
Use an 8mm Allen key to secure the plug into the radiator.
System commissioning
Because the radiator has a large capacity, it is essential to perform the following steps before final use:
- Bleed the heating system to remove trapped air.
- Check the pressure in the system to ensure it is within the manufacturer's recommended range.
Practical help
Common problems
Uneven heating across the radiator bars
Ensure the threaded plug (flow diverter) is installed correctly according to the orientation (portrait or landscape).
Radiator installed upside down
Check for the removable 'TOP' stickers on the product before mounting to ensure correct orientation.
Before use
- Verify the correct orientation using the 'TOP' stickers.
- Locate the threaded plug in the bracket box.
- Ensure you have an 8mm Allen key (not supplied).
- Determine if the radiator is being mounted in portrait or landscape orientation.
- Bleed the heating system.
- Check the system pressure.
Specs in practice
- Threaded plug
- Acts as a flow diverter to force water circulation through the radiator for even heat distribution.
- 8mm Allen Key
- Required tool for installing the flow diverter plug; not supplied with the product.
Images and diagrams
- Portrait installation: Shows the plug placement on the flow side.
- Landscape installation: Shows the plug placement on the left side.
Model compatibility
- Designed for central heating systems.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.