kinked, crimped and coiled 8mm pipework

[1animal1]

Yeah, they all 8mm bar the two in the end room. Because I'll be laying the pipe to that end room for a more direct boiler feed, then it would be very easy for my plumber to tie in the larger rad above the boiler, removing a good few metres of pipe as that rad would be on top of the new extended 22mm feed.

My only concern is the size of that room. It's 6.5x2.6 with a k1 600x1100 directly opposite the door, in the map it's slightly off as it would have obscured the boiler. It also has a k1 600x600 under the window

The window is only 1m square.... Double glazed

 

[jtsplumbing]

Usely find radiators under windows a waste of time, people tend to cover with curtains, can you not do away with this rad and upsize the other one

 

[1animal1]

Yep definitely, that was going to be one of my questions eventually what I might do is lengthen the 22mm feed, tapping into that with the enlarged rad, and then cap the 22 off where I know my plumber will be jointing above the new boiler. That way I can install it all now for minimal disruption when he comes.

What would you do re this rad in the large room? Change to K2 similar size?

 

[ShaunCorbs]

Best to work the room heat loss out and add 10%

 

[1animal1]

No probs, I found a good link for a calculator, will give that a go.

 

[ShaunCorbs]

Yea there's a few out there just do more than one and compare results

 

[1animal1]

I see what you mean, I've tried 3 so far, 3200, 4200 & 3700btu!

 

[ShaunCorbs]

I see what you mean, I've tried 3 so far, 3200, 4200 & 3700btu!

3700 btu just over 1kw is the average

 

[1animal1]

Thanks!

I didn't expect them to vary that much!

 

[1animal1]

Upon closer inspection of one of the manifold's, it appears that 2 of the 4 branches double back to the return manifold. Therefore the massive crimping session that's gone on is obviously to reduce flow, but leave enough for it to act as a relief valve.... I was under the impression that the way to add a relief valve was to fit at least one rad with no trv, only lockshields?

 

[ShaunCorbs]

yes on full systems you have two choices either fit an auto bypass or fit one rad with lockshields ie normally a bathroom

 

[1animal1]

So him crimping a bypass pipe constitutes an auto bypass or have I had bodge it n scarper fit this system?

 

[ShaunCorbs]

So him crimping a bypass pipe constitutes an auto bypass or have I had bodge it n scarper fit this system?

if theres no valve on it they have bodged it

 

[1animal1]

I haven't discovered one yet. Where's the most likely place for one?

 

[ShaunCorbs]

I haven't discovered one yet. Where's the most likely place for one?

should be on the 8mm if there is one

if not put a auto bypass on best place would be after the pump but before the motorized valve and in 22mm