Resize Expansion Vessel when adding Rad

[pacorio]

Morning All,
Just a quick question, If I add a new radiatior to the combi c/h system do i have to take into account the expansion tank pressure and is there any other considerations to take into account. Ps its all 15mm pipework.
Thanks in advance.

 

[Mbear]

Morning All,
Just a quick question, If I add a new radiatior to the combi c/h system do i have to take into account the expansion tank pressure and is there any other considerations to take into account. Ps its all 15mm pipework.
Thanks in advance.

what boiler? How many rads?

 

[pacorio]

Boiler is an Ace with 6 Rads hope this helps.
Thanks.

 

[Kip]

Will be fine. usually they recommend a combi expansion vessel can cope with 10 rads..

 

[pacorio]

Great!! Thanks for all your help. My mind is at ease now!
Thanks again.

 

[Mbear]

Will be fine. usually they recommend a combi expansion vessel can cope with 10 rads..

this is my feeling on this issue also

The main boiler I'd watch out for in this scenario is the baxi 105e preheat version. They cannot handle even 8rads If I recall correctly. They require an extra/additional expansion vessel on most occasions

 

[pacorio]

Hi Does that mean I'm ok with the Ace Boiler to add a Rad? - thanks in advance for the reply.

 

[Blackcatgas]

Hi Does that mean I'm ok with the Ace Boiler to add a Rad? - thanks in advance for the reply.

unless the 6 rads are all 700x3000 doubles the ace high will p*ss it.

 

[pacorio]

Thanks Blackcatgas. - I was just worried I may have to alter the expansion vessel pressure or something even more complex. - thanks again.