I’ve come across poorly installed unvented DHW systems before, but twice in one day!
Why can’t people read the instructions? It’s all there in black & white! Honestly! Can you spot the errors on this one?
Here’s a clue:
It’s about time I started again on a blog!
It’s the time of year when you should think about closing the supply to your garden tap. You should find a separate stopcock to the supply in your house (maybe under the kitchen sink). Once you’ve closed that then open the garden tap to drain any water left in the pipe. This will stop any water expanding (when it would otherwise freeze during the winter period). So hopefully next spring you should have no leaks.
You might also cover it for good measure, a couple of pairs of old socks would do, but you can also buy outside tap covers from most garden supply centres and other outlets.