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How To Fill Electric Only Towel Rail

How To Fill Towel Rail Radiators For Electtic Only Use


What You Will Need:

  • No22 or adjustable Spanner
  • Flat screwdriver or standard radiator bleed key
  • PTFE sealing tape
  • Funnel for easy / mess free pouring 
  • Filtered / Bottled soft water
  • Ready to use Car Antifreeze ( not concentrated ) ( Ethylene Glycol )


Minimum 80% water must be mixed with ready to use Car Antifreeze. Recommended ratio is 5:1, avoid using too much antifreeze as it may damage the welded joints.

Step 1.

After unpacking and inspecting the towel rail, remove the protective caps and screw the bleed and blanking plug into the inlets on the top of the towel rail. Make sure bleed valve is closed with bleed key to avoid any leakage.

Step 2.

Turn the towel radiator upside down and fill the towel rail with ready mixture to approximately half of the towel rail. Tilt the towel rail to the left and right to release any air that trapped in horizontal bars. Carry on filling the towel rail up to very top horizontal bar. Make sure top bar is not filled with filling medium. This for expansion air gap for cushioning and element heating rod. Tilt the towel rail both side ways again to get any air trapped in horizontal tubes. 

Step 3.

Insert the element into the towel rail. PTFE tape must be used and use spanner to tighten the element.

After the installation of the element, towel rail must be filled upto half of the top horizontal bar. Check the water level and top or discharge the excess from bleeding valve while towel rail is upside down. 

Electric Only Towel Rail Filling Level

Step 4. 

Screw the blanking plug into other inlet ( opposite to element ) and tighten with spanner.

Your towel rail is now filled and ready to be mounted on the wall now.    


Step 5.

Install the towel rail on to the wall and wire it into fuse box or wall controller. 


Step 6.

The mains power lead will need to be connected to a suitable and isolated power supply. This step should only be carried out by a qualified electrician. Your warranty will be void if this operation is not carried out by a suitably qualified person.

Turn on the power supply and allow the towel rail to reach its operating temperature. If the unit has a variable temperature control, ensure that it is set to maximum. 

Bleed the excess air from bleeding valve. Once air (maybe some fluid as well ) has finished escaping from the unit shut the air vent to prevent air entering as the unit cools.

Once the vent is locked down. Turn off the power supply.

Your new, electrically heated towel tail is now ready for use.



These instructions are intended as guidance only. Check with your towel rail manufacturer that your rail is suitable for this purpose.

Ensure that your installation meets the standards legally required in your country or region.

Planning and installation should only be carried out by a qualified professional.