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Refilling electric bathroom radiator - help please !!

Postby Andrew1234 » Sat Jan 26, 2008 4:45 pm

The electric heating element on my 2 year old bathroom radiator has failed. Am trying to avoid using a plumber and have bought a replacement - am amazed to find that the fitting instructions specify filling it with a mix of 75% water & 25% anti-freeze mix whereas I expected some sort of special oil to be specified.
Does anyone have any experience of undertaking this job?
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Postby ericmark » Sun Jan 27, 2008 12:50 am

Since the electric element can be used as well as hot water that seems to make sense but normal electric radiators use transformer oil with is a vegetable oil and I have used cooking oil in the past where it has leaked out. I wonder what is done to allow expansion?

Postby m7ohn » Sun Jan 27, 2008 3:40 am

Not sure of the mix but i know you are meant to leave a bit out for expansion. Don't know about the anti-freeze but surely an anti corrosion inhibitor would need to be mixed with de-ionised water so you won't get limescale build up and corrosion.

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Postby chris_on_tour2002 » Sun Jan 27, 2008 9:51 pm

this type of water-filled electric radiator is quite common now, you fill the rad to 90% capacity in most cases (manufacturers instructions should specify) to give 10% for expansion. a corrosion inhibitor should definitely be used.
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