Running ofch and back boiler at the same time?

Keano_

Hi All, newbie here. Not a plumber but have a bit of an understanding of some systems but probably won't know the technical terms for a lot of things so please be patient.

So..... moved into a terraced house built in around the 60/70s. Looks like the heating system is 25 odd years old. Its made up of an ofch boiler with pump attached in the shed-pipes run under ground into the kitchen (above ground now but behind cabinets) and straight to a T split 1 upstairs and 2 to the back boiler. Through back boiler into a pump (which has a stat boiler-side and an on/off switch for the pump) which goes upstairs and from what i can see into the hw tank/cylinder and onto the rad system. Obviously back down stairs and out to the shed again.In the attic there is a open tank and overflow/vent pipe(ie open system).

So my question is can I run the ofch and have a fire at the same time (was told that I couldn't by a neighbour but ask him why and he didn't know, he "was just told by a friend") and if so do I have the pump at the boiler turned on or off?

Thanks for the help.

mickuhaha

Keano_ wrote: »

Hi All, newbie here. Not a plumber but have a bit of an understanding of some systems but probably won't know the technical terms for a lot of things so please be patient.

So..... moved into a terraced house built in around the 60/70s. Looks like the heating system is 25 odd years old. Its made up of an ofch boiler with pump attached in the shed-pipes run under ground into the kitchen (above ground now but behind cabinets) and straight to a T split 1 upstairs and 2 to the back boiler. Through back boiler into a pump (which has a stat boiler-side and an on/off switch for the pump) which goes upstairs and from what i can see into the hw tank/cylinder and onto the rad system. Obviously back down stairs and out to the shed again.In the attic there is a open tank and overflow/vent pipe(ie open system).

So my question is can I run the ofch and have a fire at the same time (was told that I couldn't by a neighbour but ask him why and he didn't know, he "was just told by a friend") and if so do I have the pump at the boiler turned on or off?

Thanks for the help.

I have a back boiler and oil run both at the same time ,turn on the pump for back boiler when ever you have a fire.

Keano_

mickuhaha wrote: »

I have a back boiler and oil run both at the same time ,turn on the pump for back boiler when ever you have a fire.

Thanks mickuhaha. Is your set up the same/similar to mine?

mickuhaha

Keano_ wrote: »

Thanks mickuhaha. Is your set up the same/similar to mine?

Ye very similar, main hot feed from boiler into hot press t off upstairs and feed from back boiler with a one way valve, return side similar . Smaller feeds for radiators off main hot feed and small returns to main cold return , big feed off for hot water tank, ect ,
The main thing you need is to make sure the feed side and return sides are the same for the oil and back boiler. I think I have it right.
See link

https://www.fhtstoves.com/Connections.html

Keano_

Awesome. Thanks for your help. Feel a little more comfortable testing it out now. Cheers.