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Why are the outlets on the radiators hotter than the inlets?

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Postby chrisonedog » Fri Nov 23, 2007 8:31 pm

We have had a number of 4 radiators fitted and finding that 3 of them are hotter at the outlets than the inlets. Is it possible that the engineer has put the TRVs on the wrong ends? Thanks
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Postby htg engineer » Fri Nov 23, 2007 10:30 pm

what makes you think the inlets are hotter than the outlets ?
The hottest pipe is the flow and the cooler one will be the return. With many TRV's now - it doesn't matter what side of the radiator they're fitted to. They can be fitted to the flow or return.
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Postby marrtin » Fri Nov 23, 2007 11:34 pm

Modern TRV's are reversible and therefore can fit in either the flow or return.
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