HVAC / Heaters & Fireplaces
Assembly Instructions for Ximax Designer Radiator
Comprehensive assembly and installation guide for Ximax designer radiators. Includes mounting diagrams, connection options, filling and venting procedures, and troubleshooting tips for both standard and electric models.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
Before starting the assembly, ensure you have a clean, dry environment and the necessary tools: Phillips screwdriver, flat screwdriver, tape measure, wrench, drill, and drill bit. The radiator must be installed by a qualified plumber or competent specialist. Maintain a minimum distance of 150 mm between the floor and the bottom of the radiator for efficient heating and ventilation. Do not dispose of packaging until all small parts are secured.
Assembly instructions
1. Drill 4 holes with a depth of approx. 60 mm and a diameter of 8 mm using the dimensions provided in the installation table.
2. Insert the supplied masonry wall plugs (only suitable for solid walls).
3. Attach the screw and washer to the bracket. Do not overtighten.
4. Check for a baffle inside the horizontal tubes. If present, it must be at the bottom. If the tubes are clear, installation direction is universal.
5. Hang the radiator on the brackets.
6. Install the air valve and blanking plug in the upper threaded openings.
7. Connect flow and return pipes using appropriate radiator valves (not included). Use PTFE tape for watertight sealing.
Connection options
The manual provides specific connection schemes for vertical and horizontal tube radiators, as well as panel and profile radiators. Ensure you identify the correct connection type (standard, offset, center, or side) for your specific model before beginning the plumbing work.
Filling and venting
1. Open the air vent.
2. Slightly open the inlet valve (approx. 10%) while keeping the outlet valve closed.
3. Allow the system to fill slowly, preferably without the heating pump.
4. Close the air vent once filled.
5. Open both valves fully and run the system for 2 hours.
6. Close both valves, open the air vent to release remaining air, then close the vent.
Care and maintenance
The system must be thoroughly rinsed after installation to remove debris. Use a suitable inhibitor when filling to prevent internal rust and limescale. Clean the radiator surface only with a soft, damp cloth; avoid scouring pads, scouring agents, or chemical cleaners.
Troubleshooting
If pipes remain cold, vent the radiator again. If the radiator heats unevenly or takes too long, it may be installed upside down; check the baffle position. For electric radiators, a small amount of water discharge from the pressure valve upon first use is normal. If the radiator does not heat up, it may require topping up with water.
Practical help
Common problems
Pipes in the radiator are not warm
Check and vent the radiator again using the air vent.
Patchy heat or slow heating
The radiator may be fitted upside down. Check the baffle position inside the tube; it must be at the bottom.
Water discharge from pressure valve (electric radiators)
This is normal upon first use. If the radiator does not heat up, it may need to be topped up with water.
Before use
- Verify package contents (radiator, air vent, blanking plug, wall plugs, screws, washers, brackets).
- Ensure the wall type is suitable for the supplied masonry wall plugs.
- Check for hidden water, electric, or gas lines behind the wall before drilling.
- Prepare tools: Phillips screwdriver, flat screwdriver, tape measure, wrench, drill, and drill bit.
- Ensure a minimum 150 mm clearance from the floor.
- Confirm you have the appropriate connection fittings.
Specs in practice
- Drill hole depth
- Approximately 60 mm.
- Drill hole diameter
- 8 mm.
- Floor clearance
- At least 150 mm for efficient heating and ventilation.
- Max operating pressure
- Varies by model; refer to the 'Installation dimension table' in the manual.
Images and diagrams
- Assembly diagrams 1-4 illustrate different mounting methods based on bracket positioning (between cross tubes, on manifold, fixed bracket, or fixed pins).
- Connection schemes show standard, offset, center, and side connection options for various radiator types.
Model compatibility
- Supplied wall plugs are only suitable for solid masonry walls; use appropriate fixings for other wall types.
- Radiators are designed for closed central heating systems.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.