Search results

OK tis done. I've fitted the NR valve in the boiler flow and refilled the system. I mistakenly refilled from the heat store oops! but after refilling, the pipe underneath the NR valve was hot and above it was cool. So far so good. I've tested the gas boiler operation which means...

Ok I'll give it a go - it won't tke long to fit and if it works, it will be obvious as the gas boiler display should be much lower than 75. I've not done any calculations as I've no idea how to work it out. The pipe is 22mm and the temp is rises from around 30 to 75-80 degrees. Cheers...

Hi I guess a galvanised tank is the next thing on the agenda then. Did my thinking for the NR valve make sense? Do you think it has a chance of working? Cheers Steve

Hi Tony Ops sorry, forgot! The F&E tanks is plastic - can you buy metal or other ones that are boil resistant? I don't understand why the check valve wouldn't work - the heat leak is in the opposite direction to the boiler flow, so when the low pressure gravity feed occurs, it would be...

Hi Tony I'll check with the manufacture once I've fully documented our current system. I took some more readings and proved the flow is in reverse around the boiler - up the into the flow and down out of the return. Here's the graph: I've bought a 22mm spring loaded check...

Hi Tony OK now it's dumb question time..... If the stove siphons directly into 200+ litres of water, is it a big problem? I think I'd really have to go at some pace with the fire to get the store to boil. I've seen diagrams of the stove going into the DHW coil, and see you need a dump...

Hi All I've recorded some data and posted it up here: Unfortunately, the wire popped off the gas boiler return sensor so I still don't have the flow direction! Bummer I'll have to do it again..... Any road up, the graph from this morning clearly show quite a heat leak, with the...

Hi Onetap You do understand my diagram correctly and everything is where you said it is. 1) It is 2) They all have their own pumps, apart from the indirect hot water cylinder. This is higher than the neutraliser and thermosyphons out of the neutraliser and throught the coil. 3) The...

Well I guess I need to log the data, get my backside down the plumber's merchants tomorrow and give it a try. I don't think it's the pump problem you suggest though, as I'm also running the stove at the same time as the heat store is pumping and the stove can keep up with the light DHW...

Handbags at dawn :D I just thought about what I wrote and realise that the flow DOES appear to be in the reverse direction around the gas boiler so a check valve may do it. It's cheap and a simple fit so I'll give it a go and report back. With the sensors in place, in the morning, I...

Hi Norcon The DHW cylinder is connected to the neutraliser and is higher than the neutraliser and is gravity fed. Are you thinking what i'm thinking? When the DHW is nearly satisfied (around 50 degrees) the gas boiler provides a more arractive thermosyphoning path than the DHW coil...

Just a quick update on this. I've just fitted two temperature sensors on the flow & return of the gas boiler. The position is immediately below the boiler where the pipes connect into the boiler. I know there's a lot of heat going up there 'cos I haven't got any fingerprints now :-) Any...

Hi All The layout of the system is like this: [code:1]............------------------------------------------------------| ............|.....................................................| ........|---|---|F................................................|...

Hi Not a conventional one - the neutraliser has a pipe stat on it set to 85. If heat store flow reaches this, it turns on zone A and B rads which is 27 in total, so this kills the heat store pretty quick! Darn it! I just did my hand test again on the gas boiler and when the heat...

Hi again Tony Thanks for coming back to me. I'll get it organised and report back. To be fair to the installer, he spent a lot of time chasing air round the system which as it turned out, was the stove kettling. He quoted 2 days for the work, and did about 10! I bet this got overlooked...

Hi All We've a had a woodburner/heat store/neutraliser fitted and the gas boiler/DHW coil and CH all connect into the neutraliser. It's all working fine and i'm doing some checks on efficiency. I noticed for some time that when the heat store is pumping and the gas boiler is off, the...

Hi All apoligies for the delay, but I've been doing some tests and think I've found the cause of the problem. The user guide for the Dunsley Yorkshire says when you refuel, push and hot coals to the back and the add more wood. A diagram of the stove is here...

Hi Tony I added a single litre bottle. Although we have 27 rads, 20 are AA (us upstairs) which haven't been turned on for weeks, and 7 are downstairs. So the 1 litre will be covering the woodburner, heat store and 7 rads. Thanks for your advice on the next step. I'll check it over the...

Just a quick update. I ran the fire all evening and then part into the night on a low setting. It still kettled soon after refuel, but it's only a day and I know I need to be patient. I make up a fire every morning to catch the DHW after showers and every other evening to catch the same...

Hi looks like I've sparked a bit of a debate! I'll try and answer all the questions: 1) The heat store is an ordinary cyclinder with no coils and is heavily insulated. 2) I've included a better diagram showing the DHW indirect cylinder connected to the neutraliser. 3) The store was added...