Installation Manual for Ximax Apus Designer Radiator

A comprehensive installation and maintenance guide for Ximax Apus designer radiators. This manual covers assembly steps, connection schemes, dimension tables, and troubleshooting procedures for both standard and electric models.

Quick answers from the manual

Quick answer

This manual provides installation and maintenance instructions for Ximax designer radiators. It includes assembly steps, connection schemes, dimension tables, and troubleshooting for both standard and electric models. p. 1, 4

Key actions

Drill 4 holes with a depth of approx. 60 mm and a diameter of 8 mm using the dimensions from the table. p. 4
Fill and vent the radiator slowly to ensure all air is removed. p. 4

First start

Rinse the system thoroughly after installation to flush out debris. p. 4

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Problems and fixes

Radiator pipes not warm

Vent the radiator using the air vent.

p. 4

Patchy heat

Check if the radiator is installed upside down by inspecting the baffle.

p. 4

Maintenance and reset

Top up electric radiator: place on side, undo top side nut, add water, and replace. p. 4

Technical specifications

Parameter	Value	Meaning	Pages
Max. Operating pressure	4-10 bar (model dependent)	Maximum pressure limit	p. 5, 6

Where to find it in the PDF

Assembly Instructions p. 1, 4
Connection Schemes p. 2
Dimension Tables p. 5, 6

Table of contents

Manual images

Click an image to enlarge

Typical connection options for vertical and horizontal radiators

Page 2

Assembly diagram for radiators with brackets between cross tubes

Page 3

Quick guide from the manual

This manual provides installation and maintenance instructions for Ximax designer radiators. Key requirements include installation by a qualified plumber, ensuring the wall type is suitable for the supplied fixings (solid masonry), and maintaining a minimum distance of 150 mm from the floor for proper ventilation. Always check the specific dimension tables for your model before drilling.

Scope of delivery

Ensure your package contains the following items:

1 pc. Radiator
1 pc. Air vent (A)
1 pc. Blanking plug (B)
4 pcs. Masonry wall plugs (C)
4 pcs. Screws (D)
4 pcs. Washers (E)
4 pcs. Wall brackets

Assembly instructions

Follow these steps for a secure installation:

Preparation: Check packaging for completeness and ensure you have the appropriate connection fittings. Verify there are no hidden water, electric, or gas lines behind the wall.
Drilling: Use the dimensions for the main holes (refer to the assembly dimension table) to drill 4 holes with a depth of approx. 60 mm and a diameter of 8 mm.
Mounting: Insert wall plugs (C) into the holes (solid walls only). Attach the screw (D) and washer (E) to the bracket. Hang the radiator on the brackets.
Baffle Check: If the radiator is fitted with a baffle, ensure it is at the bottom. If both horizontal tubes are clear, the baffle is not required.
Connections: Mount the air vent (A) and blanking plug (B) in the upper threaded openings. Connect flow and return using radiator valves (not included). Use PTFE tape for watertight sealing.

Filling and venting

Open the air vent.
Slightly open the inlet valve (about 10%) while keeping the outlet valve closed.
Allow the system to fill the radiator slowly.
Once filled, close the air vent.
Open both valves fully and run the heating system for 2 hours.
Close both valves, open the air vent to release remaining air, then close the vent.

Care and use

After installation, rinse the system thoroughly to flush out debris. Add a suitable inhibitor to the central heating system to prevent internal rust and limescale. Clean the radiator only with a soft, damp cloth; avoid scouring pads or chemical cleaning agents.

Troubleshooting

If pipes are not warm, vent the radiator again. If the radiator heats patchily, it may be installed upside down; check the baffle orientation. For electric radiators, a small amount of water discharge from the pressure valve upon first use is normal. If it fails to heat, you may need to top up the radiator by placing it on its side and adding water via the top side nut.

Practical help

Common problems

Radiator pipes are not warm

Check for air locks and vent the radiator using the air vent.

Patchy heat or slow to heat

The radiator may be installed upside down. Check the baffle orientation inside the tube.

Water discharge from pressure valve (Electric Radiator)

This is normal upon first use. If it persists or the radiator does not heat, top up the radiator with water.

Before use

Check packaging contents for all parts.
Ensure you have the correct connection fittings.
Verify wall type (supplied plugs are for solid masonry only).
Check for hidden water, electric, or gas lines behind the wall.
Ensure at least 150 mm distance from the floor.
Prepare necessary tools (screwdriver, wrench, drill, tape measure).

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Specs in practice

Drill hole spacing (X/Y): The required distance between mounting holes for your specific model.
Hub spacing (NA): The distance between the connection points for the radiator valves.
Max. Operating pressure: The maximum pressure the radiator can withstand; exceeding this voids the warranty.

Images and diagrams

Connection schemes show standard, center, and side connection options.
Assembly diagrams (1-4) illustrate different bracket mounting positions depending on the radiator type.

Model compatibility

Supplied wall plugs are only suitable for solid masonry.
Some radiators require a baffle at the bottom; check tube orientation.
Electric radiators may require topping up with water if they fail to heat.

Manual page author

David Miller

Documentation analyst

Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.