Change of flow direction OK?

[Paulioliolio]

Hi all

I'm about to have a replacement boiler fitted and the one I'm going with has the flow & return pipes on opposite sides to the old one.

The old one was for a gravity fed system, with 8 radiators all fed from lower left & right, none of which currently have TRVs on. The new boiler's a combi.

My question is, does it matter if the flow in the new set up is opposite to what it was?

Many thanks.

 

[ShaunCorbs]

yes it matters but your gas safe engy who is fitting the boiler should know this, if not i would be worried

or are you on about position of the old connections to the boiler?

 

[rpm]

yes it matters but your gas safe engy who is fitting the boiler should know this, if not i would be worried

or are you on about position of the old connections to the boiler?

What!!!

 

[ShaunCorbs]

What!!!

took the title as flow and return reverse connection as it matters which way the flow and return is connected,

but then had a second thought if he meant where the flow and return were located on the old boiler vs the new boiler

sorry for any confusion

 

[king of pipes]

Yes bud it does matter alot of boiler manufactures do spacers now so you can run pipework behind the boiler so its less visable but certainly dont cross flow and returns

 

[deg]

Why would it matter. No trvs or motorised valves.

 

[ShaunCorbs]

Why would it matter. No trvs or motorised valves.

as it will have these (needs to be brought upto current regs also building regs)

Edited (Combi System)

 

[deg]

Combi boiler being fitted and most trvs are bi directional now anyway.

 

[ShaunCorbs]

Combi boiler being fitted and most trvs are bi directional now anyway.

any rads with a pipe / connection at the top of the rad?

 

[Paulioliolio]

any rads with a pipe / connection at the top of the rad?

Nope.

Thanks for all the answers folks.

The only reason I do know which is which is that after scraping through the rust down to shiny metal around the heating connections on the old boiler I could definitely see an F in front of one of them. If you squint a lot & use your imagination you can sort of see an R in front of the other one.

No non return valves, all pipes at bottom of rads. When tanks & pump are removed it'll essentially be just two pipes with rads piped across them.
Very basic valves on rads at the moment - Looking at them there's no way to tell which way the flow goes at the moment.
I can't see that it'd matter which way the water flows through them, but thought it'd be better to ask just in case.

The heating pipes come down through the ceiling above where the boiler sits.
The one that was connected to 'F' on the old boiler is on the right. On the new boiler 'F' is on the left.
I could swap them around by lifting a bit of floor above, but I'd like to save cutting a trap in the floor & doing a load of work if there's no need to.