Got my immersion heater fitted with mechanical flange. All went to plan, no leaks, really neat etc.
However, I tested it yesterday for two hours & I'm not sure it's actually working. Water didn't feel any warmer, not bubbling from element etc. but electric metre was spinning fast so power was being consumed!
The immersion in my hot water tank (domestic) makes a noise like a kettle when it's on but the one in my tank doesn't make a peep!
Anyone?