Radiator flow and return question

[Doingitright]

Hi - a quick question hopefully someone can answer...

In summary I wish to install a large radiator in my downstairs kitchen, which currently doesn’t have one. For reasons I won’t go into, the flow and return pipes downstairs are a royal pain to get access to. However, in a room above the kitchen they are easily accessible.

My question is this: Would it be ok to tap into the flow and return upstairs and run the pipes down to the new radiator?

My amateur concern is that this could place an unintended strain on the system – with water being diverted downstairs then back upstairs - to continue its original journey around the house.

BTW my boiler is a Worcester gas comb and it's on the groundfloor.

All views much appreciated

 

[plumben]

You shouldn't have to much problems tee ing off the upstairs flow and return most houses with solid floors are like this, what size pipes are you planning to tee off, ideally you want to tee off 22mm with 15mm and then you'll need to balance the system

 

[Doingitright]

You shouldn't have to much problems tee ing off the upstairs flow and return most houses with solid floors are like this, what size pipes are you planning to tee off, ideally you want to tee off 22mm with 15mm and then you'll need to balance the system

Thanks for the reply. Both the 22mm pipes and 15mm pipe are available to tee off. Excuse a novice's question, but why is the 22mm better to tee off and what would happen if I teed off the 15mm instead?

 

[Neil K]

No you'll be fine fellow

 

[Neil K]

Thanks for the reply. Both the 22mm pipes and 15mm pipe are available to tee off. Excuse a novice's question, but why is the 22mm better to tee off and what would happen if I teed off the 15mm instead?

Restricted flow to new radiator. Best practice to tee off the 22mm

 

[plumben]

Thanks for the reply. Both the 22mm pipes and 15mm pipe are available to tee off. Excuse a novice's question, but why is the 22mm better to tee off and what would happen if I teed off the 15mm instead?

Usually you would tee off the 22mm in 15mm to each rad to give good flow to the radiator so if you tee'd off the 15mm you'd be splitting the supply to the original radiator if you like
although you can tee off the 15mm you'd just have to balance the system properly