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Nah just says when cleanse is complete flush system.

Thanks EFL, makes sense! I've been flushing the system through in the mean time, came out black initially, then bright yellow, now lighter yellow, going to keep running it until it goes clear. I was planning on leaving the cleaner in the pipes for a week then doing a flush through next...

Hi, My central heating is very noisy, has gotten worst within the last year, with loud popping sounds. I have a Y system, I know how to flush the system out and add boiler silencer using the expansion tank in the loft, my questions are: If you add chemicals to the system will that not get...