Cleaner

[Patrol]

Hi guys, just replaced rubber hoses on a 2009 viessman, been advised not to use inhibitor due to that being the problem in the first place!! Could anyone advise if a system cleaner could be used, would this have any effect on the new hoses ?
thanks in advance.
pete

 

[townfanjon]

Viessmann have always said no to any inhibitor or chemicals .

 

[Patrol]

Viessmann have always said no to any inhibitor or chemicals .

Thought so thanks