Malc,
Reading your post with interest. I was having exactly the same problem with the boiler "sucking in air". I remade every connection perfectly but still it looked the same. I have since found out that it is more complicated than that - if you exposure kerosene to vacuum, often dissolved...
Hello Malc,
Reading your posts with interest. I have an identical problem with my HRM wallstar boiler which I have been working on.
I spoke to HRM technical support last week and they recommended a pipe jointing compound called "Plumba" to me. It is a clear silicone sealant and they said...