Converting combi to system boiler

[phil100uk]

Good afternoon gent's
i have the chance to buy a 1 year old vaillant combi pro 28 boiler from a mate who has just had his system changed to a megaflow and normal boiler due to an extension and extra bathroom .
My existing boiler is about 14 years old and nothing but trouble with breaking down and i would like to get it changed, it is a potterton suprima 60 ff and i have a hot water cylinder next to it and 7 medium size radiators , i don't want to convert to a combi system as i am very happy with the amount of hot water we get from the tank and it can fill 2 baths at the same time if needed which is great , i realise that i wont get the manufacturer's guarantee but it is only a year old so i am not worried about that and i would just like to know if this can be done without to much modification etc .
It would really be a good deal for me money wise if i can do it

Thanks in advance

 

[Razor900]

It will mean sealing the system but it should be really straightforward for any decent fitter

 

[phil100uk]

It will mean sealing the system but it should be really straightforward for any decent fitter

Thanks for the quick reply Razor , i forgot to mention that it is a sealed system i have with a red tank with a pressure gauge and filling loop fitted above the boiler and i have to top it up every 6 months or so , does this make any difference...? thanks

 

[dcawkwell]

Yes it will work.
Quite a log of fitters won't have a clue and will tell you that you need a system boiler.
All that required is two zone values and be able to switch the boiler to fire when either tank or central heating is calling for heat that may already be there so just a bit of wiring.
If you have a sealed system already no problem.

 

[phil100uk]

Thanks for your advice guys , i was talking to someone last night who was telling me the same thing that you are saying in that it will work fine with just a slight modification of the pipes and wiring to the control box .
Cheer's for that and i will now go ahead and grab myself a bargain...

 

[Agile]

Anyone who gives you the correct answer will say the same thing!