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Do-It-Yourself (DIY) Question & Answer Forum
Connecting floor heating
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<blockquote data-quote="avinalarf" data-source="post: 26938" data-attributes="member: 631"><p>Sorry to butt in gents. I've read this thread with interest, even though most of it is double-dutch to me! I've recently had UFH installed, with 2 zones and added to my current condensing boiler (Vaillant) and my concern was how the GCH engineer had wired it up...</p><p></p><p>For testing purposes, as there was no FCU in place yet, he put a 3-pin plug on the end of the circuit supplying the UFH and anyone who touched the plug got quite a nice jolt!</p><p></p><p>My assumption (I know we shouldn't make these!) is that this is incorrect. He said that this was caused because there's no way of isolating the supply for the UFH as it was going (techinical term!) via the boiler, which is always on.</p><p></p><p>I have since wired the supply cables for each zone into 3A DP switches, but wondered if anyone could alleviate my concerns.</p><p></p><p>Hope the above makes sense 'cos I think I've confused myself!!!</p></blockquote><p></p>
[QUOTE="avinalarf, post: 26938, member: 631"] Sorry to butt in gents. I've read this thread with interest, even though most of it is double-dutch to me! I've recently had UFH installed, with 2 zones and added to my current condensing boiler (Vaillant) and my concern was how the GCH engineer had wired it up... For testing purposes, as there was no FCU in place yet, he put a 3-pin plug on the end of the circuit supplying the UFH and anyone who touched the plug got quite a nice jolt! My assumption (I know we shouldn't make these!) is that this is incorrect. He said that this was caused because there's no way of isolating the supply for the UFH as it was going (techinical term!) via the boiler, which is always on. I have since wired the supply cables for each zone into 3A DP switches, but wondered if anyone could alleviate my concerns. Hope the above makes sense 'cos I think I've confused myself!!! [/QUOTE]
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