Advice on fitting new rad

T Dog

Some advice needed. I have an upstairs bedroom with 1 no. 1400mm double rad fitted but the room never seems warm enough. The room size is 5.0m wide, 4.0m long & 2.4m height. This room is now going to be a nursery & we were thinking of fitting an extra rad. Does anyone know going by the measurements whether I need an extra rad fitted. The problem I see with fitting a new rad is that I don't think we can get a feed off the existing rad as the floor boards aren't running the way we want them. Sorry for being so long winded or vague, just looking for some help.
Thanks

heinbloed

The room dimensions don't tell anything about the thermal demand of this room. Nor do the radiator dimensions tell anything about it's real output.

Get the CH system balanced and the boiler checked. This might do away with further system extending jobs.

Get a heating engineer, plumber or DIYer for an extension of the existing system in. There are (flexible) pipes available nowadays which can be joined to the existing pipework above floor level to supply an aditional radiator - if necessary.

aujopimur

Your local plumbing supplier will calculate the heat requirement based on your room size, location, build type etc..

shane0007

T Dog wrote: »

Some advice needed. I have an upstairs bedroom with 1 no. 1400mm double rad fitted but the room never seems warm enough. The room size is 5.0m wide, 4.0m long & 2.4m height. This room is now going to be a nursery & we were thinking of fitting an extra rad. Does anyone know going by the measurements whether I need an extra rad fitted. The problem I see with fitting a new rad is that I don't think we can get a feed off the existing rad as the floor boards aren't running the way we want them. Sorry for being so long winded or vague, just looking for some help.
Thanks

Calculating with a Mear's calculator and assuming there is 2 outside cavity walls, U value of 1.5 and timber floors, the requirement is 2.3kw allowing for 10% in system losses.

A 1,200 x 500 high double panel radiator using a delta T of 62C will give this output.

I would look at either the balancing of the radiator, the circulating pump size or heat losses for that room. If your RGI or OFTEC engineer has an Anton Sprint V2 Flue Gas Analyser (most use this model), you could get them to check the temperatures across the flow and return pipes of the radiator to see if it is a balancing issue.

Also check the amount of radiators, upstairs/downstairs in relation to pump head, they generally should have a 6.0m head but most have 5.0m heads. Most boiler manufacturers have now changed to 6.0m as standard in all system boilers for this very reason.

If the issue is circulatory or balancing, an extra radiator teed from this radiator will only make the situation worse.

JohnnieK

2 good answers there from 2 good experienced plumbers .

There must be something wrong with circulation or insulation if that rad wont heat that space. Does it get as hot as the others when on or is it noticeable?

T Dog

Thanks lads for all the helpful replies. I think I need to get a plumber to have a look at balancing the system. I was told in a builders merchants that I needed approx 11000 btu for a room that size & that the rad I had was only putting out about 8000, that was the reason I thought I needed an extra rad (I'm a complete novice when it comes to plumbing or heating). The burner by the way is an oil fired firebird condenser & the room is well insulated as it was built in 2008. So getting the system balanced seems to be the way to go, ya?