Pipes size from stove.

johneym

Hi Folks,

does anyone know if the pipes from the stove should be 3/4 or inch? They are both 3/4 at the moment but major problems in this house which I am moving into. Heating is very bad and slow. Someone said these pipes should be bigger. Its a 150 sq m house. 15 KW stove if working correctly.
Is it a big job to change them?

Thanks a lot,

John

Micky Dolenz

Is it a solid fuel or oil stove?

johneym

hi Micky,

thanks for reply

its an oil stove at the moment but I intend to change it to solid fuel as soon as possible. Does it make a difference?

Micky Dolenz

Yes, For solid fuel you should have a gravity circuit to cylinder, this is atleast 1" sized pipe. This primary 1" circuit should have no valves fitted on it, this includes pump valves. Pumps should be fitted on the secondary circuit, Secondary circuit being the one that services the radiators.

johneym

thanks Micky,

the pump at the moment is on the return just about 1 or 2 feet from the stove. When I change the stove to solid fuel should this pump be taken out then?

Thanks a lot,

John

Micky Dolenz

Yes,

Gravity flow to cylinder (Primary circuit) and secondary to radiators, this would be pumped.

See here for good info and here for example of piping.