Double radiator advice

B

Brian Greenhalgh

Joined
6 Mar 2021
Messages
24
Reaction score
0
Country
United Kingdom
We had a old double rad that was from the 70s 1500mm and we had a extension built and needed a radiator in it so what I did was took the the old radiator out and putting a single 1400mm and a single 1200mm in the extension I run the feed into the 1400mm out then into the 1500mm the 1500mm is not getting as hot but the pipe to the rad is very hot
 
Sponsored Links
1. Have you rebalanced the system since adding the new radiator(s)?
2. Have you now got a 1,500 double, a 1,400 and a 1,200 (singles) all running off the original pipework for the 1,500 double?
3. Have you bled all the radiators?
 
Sorry for being stupid rebalanced no sure both radiator are single and running off original pipe work and yes bled all radiators
 
1. Look up balancing to see how it's done. Long, boring, job I'm afraid.
2. I'm afraid I don't quite understand what you have done. Is it:
2a. Completely removed a 1,500 double and run it feed and run pipes to a 1,400 single then on to a 1,200 single? OR
2b. Left the 1,500 double in place and added one 1,400 single and one 1,200 single run from the 1,500's feed and return pipes?
 
Sponsored Links
Yes I have removed 1500 double and put feed into extension which has 1200 then run it into 1400 then out to the return pipe
 
16163577031684650048413635372708.jpg
 
Should go:
Removed 1500 flow to new 1200 flow to new 1400 flow.
1400 return to 1200 return to removed 1500 return.

If you have gone 1500 flow to 1200 flow, then 1200 return to 1400 flow, then 1400 return to 1500 return you have effectively created a part one pipe system. Not likely to work very well, as the water coming out of the 1200 and into the 1400 will be 20 degrees (or thereabouts) cooler than it should be.
 
So should I Tee in to 1400 and the feed run into the 1200 then back to return
 
Last edited:
Doesn't make any difference as far as I'm aware , I just fit the Trv on the most airy side but these days good ones seem to be bidirectional anyway.
 
D

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
You must log in or register to reply here.
Sponsored Links

Similar threads

M
Replacing a Radiator
Replies
4
Views
1K
mowgley1979
M
M
Vertical or Horizontal Designer Radiator?
Replies
4
Views
8K
Vidahomes
V
8
Building a heated towel rail / radiator
Replies
4
Views
517
HERTS P&D
HERTS P&D
A
Advice needed on replacing existing boiler and rads with new
Replies
11
Views
1K
Nige F
N
G
10mm microbore rad system, can I fit towel warmer with 15mm?
Replies
4
Views
3K
greg123
G
Back
Top