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  1. H

    CH system, Fernoxed, no leaks, produces air/gas..why?

    Another question please: do you have any thoughts about the two auto vents already on the system? They are sited at floor level on 2nd floor, 1.4mtrs above top valve of towel rail/rad that collects air/gas but 0.6 mtrs below tops of rads on 2nd floor. Should these auto vents actually...
  2. H

    CH system, Fernoxed, no leaks, produces air/gas..why?

    THANKS AGAIN.... 2xF1 to be purchased.
  3. H

    CH system, Fernoxed, no leaks, produces air/gas..why?

    Thanks for your quick advice. I'll have to wait a few days to get enough 'air' collected to test burn. BUT your comments caused me to reconsider if I have added enough Fernox to the system and I think probably not. There has not been a regular checking of the water/gas of the...
  4. H

    CH system, Fernoxed, no leaks, produces air/gas..why?

    My CH system is 9 years old, it has an MHS condensing boiler. The boiler is serviced annually by an industrial engineer experienced with the installation/maintenance of this type of MHS boiler. There are 22 rads plus towel rail. The bathroom ladder towel rail on first floor continuously...
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