Hi,
I'm currently preparing to have my current domestic heating/plumbing system replaced and will be using a combi boiler. I have almost everything sorted out, but I can't find any info on what to do with the relief valve pipework.
Can I use the existing hot water tank vent pipework for this relief, or do I have to run new pipework direct into a drain and if so, can I use the existing bathroom drainage system to vent into?
Many thanks in advance for your advice.
-- Andy