Thank you for your responses, I am inclined to think that I need to take this further, the guys did a great job with the stove but they subcontracted the plumbing part to a HETAS approved person they use regularly..or so they said.
StarDanny, I'll try to get photos uploaded but to answer your...
Hi, I wonder if some one could offer some thoughts on the following....we've had a multi fuel stove fitted which has been joined into our existing central heating system. The system was unvented and used a Vaillant Thermocompact 628. The contractor did a great job of fitting the stove but I now...