does any one know the difference between an ordinary immersion thermostat and one for an unvented cylinder, they look identical (both have overheat cut outs) but paperwork says not suitable for unvented cylinder, cannot get through to manafacture for advice, even one i got from online supplier of products for unvented cylinders it says for use on open vented cylinders, they assure me it is ok to use, is it?
[automerge]1582487720[/automerge]
pictures of fitted thermostat
[automerge]1582487720[/automerge]
pictures of fitted thermostat
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