Creda Storage Heaters question

25 Feb 2011
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United Kingdom
I have searched high and effin low to find the answer to this question. Doesn't even tell you in the manuals or even on the Creda website. However, as far as I can tell it is a discontinued model; but still. Model number 70305S. SFHAW Sensair Fan Heater. Question: what is the rating or resistance of the elements?
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Looks OK

W = V * V / R

= 240 * 240 / 21

= 2742.85 watts

but it might be less than 21 ohms if the intake controller uses any form of modulation ( voltage control ) to adjust how much heat energy is stored during the off peak time.

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