Ferroli optimax he plus 25ov

[Buller44]

Hi people. Have a customer with a ferroli optimax 25 ov boiler. Have spoken to ferroli and they say it can't be converted to a sealed system boiler as the boiler doesn't have prv or expansion vessel. Surely if I instal robokit with correct size vessel for system this would be ok. Does anyone know any other reasons why this shouldn't be done?

 

[kris]

Most can be as long as safety aspects are covered but at the end of the day if ferrolli are saying this then find out there reason as to why not, Manufacturers are Boss,,, not sure about boiler in question as tend to run a mile from ferrolis , i just had quick look at the instalation instructions and they are saying its only to be used in an open vented system and must be fully pumped because of the unique design of the heat exchanger, unless they are covering there arses incase something did go wrong,, id phone up to find out why buller or run away