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Discuss Newbie in the Solar PV Forum | Solar Panels Forum area at ElectriciansForums.net

gonefishing said:
Just been reading this forum and found this
"I did fit my fire, then I had a qualified person come in and do the pipe work to it so I knew it was safe".
Just let us know your Gas safe "qualified person" number and we'll report him for contravening the gas regs. It's not allowed for a reason and it's the same as electrical work. Many people don't understand the problems that they can introduce by even doing "small electrical work" All electrical work has to be certificated for a reason and if you are an engineer you would understand the reasons why... Many people have tried to help here and all I can advise is that they shouldn't give advice to unqualified people. Many fatalities are caused by unqualified people, be sensible and get quotes from professional installers.

Read more: http://www.electriciansforums.net/p...nergy-forum/69634-newbie-3.html#ixzz2MHa2LwtI
Click to expand...


not with the changes to part P coming in soon. A totally backward step IMHO!
 
gonefishing said:
Why would you ever think that you are qualified to hang a fire? are you Gas Safe registered? are you at least Part P qualified?
I guess I know the answer from your attitude. People have been trying to help you here, their intentions are good, your intentions seem rather dangerous.
Click to expand...
Gonefishing I think you should re-read all posts. This is someone who on a limited budget wants to improve the environment for us all. By just reading his posts it is obvious he is competent to carry out the part of the job he is doing. The remainder he is either taking advice or getting it certified.
You on the other hand appear to have little or no knowledge of the requirements of part P.
 
Little update, the front aspect brackets and bars are on. Most of the rear brackets are also on, just waiting for the chimney to come down this weekend to finish up and then it'll be time for the panels :)
 
Thanks for your comments, It's ok for you then if he gets it all wrong and isn't qualified to do the work and ends up killing someone. There are many here who have paid hard earned money to do the work properly. If you had any idea of the costs for becoming an installer you wouldn't even comment something so ridiculous. The posts show he is not compotent at all as he is asking! and I'm sure my knowledge of "Part P2 ourstripes yours easily.
 
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Gonefishing - go fishing :59:
I've just read all your (19) posts and haven't found one that doesn't find fault with the topic being considered, additionally you have yet to post something that would actually be helpful to any of the threads...
 
Chimney has gone. Flued ridge tile in its place. Also got the rest if the brackets on the rear aspect. If the rain holds off tomorrow, I'll be getting the rest of the bars on and then the scaffolding can be moved ready for the panels to go on :)
 
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I've got a local installer who's been working with me through the install in to do it. Have grabbed a couple of locks anyway, just so everything is there.
 
I didn't have the cash to do mine only choice for me was to us homesun to do it for free or get in to debt and I am not doing that over solar
 
And both of us at home all day to use that free power! I bought a solor-log 200 wifi (datalogger) and set it up using SolarAnalyzer Pro it come in android and windows. I use it on my nexus 7 tablet and can see real time power stats.
 
Quick update, just over 3 months on and have produced 3385kwh. The West orientation seem to be marginally better than the East at the moment, but there's not much in it.
 
Another quick update....have now got an Immersun heating a separate cylinder to supply our hot water as our boiler can't accept preheated water. Water is heated to 80°c, is pumped through a heat exchanger to heat the incoming mains and the resulting hot water passes through a blending valve to give us hot water at the taps. 2 solenoid valves controlled by a top of tank stat controls which source the hot water comes from. In 5 days, the Immersun has put 50kw into the water :)
 
Steve_rutland said:
Another quick update....have now got an Immersun heating a separate cylinder to supply our hot water as our boiler can't accept preheated water. Water is heated to 80°c, is pumped through a heat exchanger to heat the incoming mains and the resulting hot water passes through a blending valve to give us hot water at the taps. 2 solenoid valves controlled by a top of tank stat controls which source the hot water comes from. In 5 days, the Immersun has put 50kw into the water :)
Click to expand...

Hi Steve ,

Good to hear that the systems performing well.

What's the difference between preheating the water and the HEX? Is the HEX in advance of the boiler or is it after? Do you 'assume' that the primary source is the preheat tank if so why bother with the hex and not just blend the output from that tank? - Care to post a schematic of the plumbing and controls, (confused) thanks.

Thanks
 
Am using the cylinder as a heat store only and using the HEX to give me mains pressure hot water. It's a vented cylinder. The boiler will alarm if you try and feed it with preheated water. Will try and draw up a schematic when I get in from work. Am looking at a speed controller for the pump now rather than the blending valve to see how efficient I can get it. That said, the return back to the tank is cold so it's probably not worth it....but I do like to twiddle :)
 
Righty, hope this comes out ok.
The tank top stat controls S1 & S2. If the tank is above the stat value ( 48c ) then S1 opens and heats the HEX, if below...S2 open and the boilers fires. Should point out there is a flow switch where DHW is on the drawing which is a live feed to the stat...then DHW. Both valves are normally closed. Using this system due to having a combi condensing boiler which wont accept preheated water but still wanting mains pressure hot water without the need to get a specialist in to fit a pressurised tank. Works a treat!! ;-)
Solar DHW.jpg
 
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OK, I see what you've done, now let me put my thinking cap on.

I reckon we might be able to use a solar controller with it's variable Δt values and multiple pt1000 temperature sensors to give you what you need.

What you call a blending valve I presume is a Thermostatic Mixing Valve as normally installed on the the outlet of DHW cylinders or on the inlet to bath taps etc.

Couple of points concerning the water regs:
I am not sure also that the 2 port valves you have used are suitable / legal for potable water - I presume you used 'normal' 2 port central heating valves?
Also from the regs point of view it looks like you missing a check valve as well.

More normal practice would have been to convert your combi to a system boiler and use an unvented cylinder - then as you realised you need to be G3 certified to install / play with / configure those as otherwise they are literally bombs if not installed correctly.
 
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