Domestic air source and cold callers

[fizzy]

Ours is setup so the oil boiler and the Rayburn are open. Boiler wont work in a powercut so that wont be a problem. The Rayburn is gravity feed so no pump needed therefore we still have hot water in a powercut but no central heating*). The pumps are for the boiler and central heating, with a third pump to send heat from the top of the store to the bottom if the top gets to 85C (this dissipates the heat and makes the central heating pump come on sooner. Its a clever setup. The central heating pump is designed to circulate when its thermostat kicks in (set at 55C in the winter) - as the Rayburn is on all the time, it makes sense to just constantly keep the house warm. Can ramp up or down circulation by loading the Rayburn or letting the fire die down a bit and slowing the burn. The oil boiler is for top ups if needed but we didnt turn it on at all last winter! My only criticism is that the store is probably a little small for the big bath with only the Rayburn heating it so we either need a 20 minute blast with the boiler to top the heat up or to add a second pre-heat tank to it. We didnt go larger as we didnt want to overdo the weight.

*not the biggest deal as the Rayburn and lounge log burner are fairly central in the house so only the bedrooms are cooler in a powercut and that just needs an extra duvet. One day i might run a lead so i can power the pumps with a generator if ever needed but its not a big deal.

We have the attachments to add solar water and there is an immersion fitted but not wired in so we could run that off of PV or mains if ever needed. The idea is to get the solar doing the work in the summer so we use less oil then.

Don't wire in the immersion what ever you do. They use loads of electricity.

 

[reb78]

Don't wire in the immersion what ever you do. They use loads of electricity.

Thats only going on in an emergency or if we put PV panels on.

 

[addjunkie]

Don't wire in the immersion what ever you do. They use loads of electricity.

Ours is wired through a solar optimizer so if theres ziggies to export it midulates first the hitwater tank emersion, the. The heat store emersion. Using one of these

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Have generator c/o switch too, that allows us to plug in the generator, which will run everything in the house except the electric Arga, washer and tumble dryer

 

[gaz1]

The Rayburn is gravity feed so no pump needed therefore we still have hot water in a powercut but no central heating*).

with being a plumber id have 5 gate valves ready for use 2 to open a closed system up to a gravity fed system one to shut down the hot water cylinder the last 2 are a small tank feed return and supply

then i can run the rayburn as an open system or wood stove and have central heating on even in a power cut

the last pipe is also fitted with a gate valve and thats your overflow pipe to the tank

 

[Farside]

Don't wire in the immersion what ever you do. They use loads of electricity.

One benefit of the smart meter is dirt cheap power between 2 and 4am. That's when the immersion timer comes on.
I barely notice it on the bill.

 

[dobbslc]

Headline today shows government numpties and conmen are still itching to abuse public funds.
They are proudly making decisions and gullibly falling for scams, without paying a suitable penalty.
Fraud investigation? - ha! yeah, right, lot of good that will do. Not.

Tory council is left effectively bankrupt after investing £655m in solar farm tycoon who used taxpayer cash to buy £12m private jet, £16m yacht and £2m Bugatti Chiron supercar instead​

I heard about this last night, almost unbelievable!
But unfortunately true

Idiots.

 

[mtt.tr]

You missed my point? Methane to CO2 is the eventual conversion in the atmosphere. But, meanwhile, methane is a far more effective green-house gaz than carbon dioxide. Plastic waste needs to go somewher, so what would youndo with a filthy greatnpile of plastic waste? Think about it, and come up with a better answer?

Convert it to char?

 

[reb78]

with being a plumber id have 5 gate valves ready for use 2 to open a closed system up to a gravity fed system one to shut down the hot water cylinder the last 2 are a small tank feed return and supply

then i can run the rayburn as an open system or wood stove and have central heating on even in a power cut

the last pipe is also fitted with a gate valve and thats your overflow pipe to the tank

Not sure I follow Gaz. The Rayburn flows to the thermal store via gravity. The store has a header tank and the water in it circulates through the Rayburn, boiler and central heating (CH when the pump is triggered). So the whole lot is an open system. If it boils (say in the event of a powercut) the store will vent to the header and then overflow. All we need to do to cool the store is damp the Rayburn down and run a bath.

 

[gaz1]

Not sure I follow Gaz. The Rayburn flows to the thermal store via gravity. The store has a header tank and the water in it circulates through the Rayburn, boiler and central heating (CH when the pump is triggered). So the whole lot is an open system. If it boils (say in the event of a powercut) the store will vent to the header and then overflow. All we need to do to cool the store is damp the Rayburn down and run a bath.

if it was tee'ed off and went into the central heating system pipes with 2 gate valves within power cuts the gravity fed system would feed the central heating system

the gate valves would only be opened in this condition but must be closed if you want to close loop it again going through the boiler

but you need to close down the hot water cylinder return with another gate valve or equalise it like you do with a radiator system

the rest that you have already is piped up so no need to add them to an exisisting system

just incase your not sure about it any presure thats within a closed loop central heating system would eject itself out of the header tank over flow pipe

 

[reb78]

if it was tee'ed off and went into the central heating system pipes with 2 gate valves within power cuts the gravity fed system would feed the central heating system

the gate valves would only be opened in this condition but must be closed if you want to close loop it again going through the boiler

but you need to close down the hot water cylinder return with another gate valve or equalise it like you do with a radiator system

the rest that you have already is piped up so no need to add them to an exisisting system

just incase your not sure about it any presure thats within a closed loop central heating system would eject itself out of the header tank over flow pipe

Hmmm. I'm no plumber but I cant see how that would work on my system. I could get it if you were suggesting leak off rads but not the whole system. To complicate it, half of my system if microbire off of some badly plumbed manifolds.

 

[gaz1]

a gravity fed system is the same as an open air system like the below system pic



the pump is there just for better flow on the feed pipes but a gravity fed system can run itself and feed the radiators just the same

sealed central heating systems dont use expansion tanks as they use boiler pressure and a pump to flow the heated water

so on the above pic remove the expansion pipe and the header tank feed that goes into the return pipe to the boiler and thats your sealed system

 

[reb78]

Perhaps i have used an incorrect term - My Rayburn flow and return dont have a pump - they are 28mm pipe and work as hot rises and cool falls and circulate that way (maybe wrongly I think of this as gravity flow). I also have a thermal store rather than a traditional hot water cylinder. So the water in my central heating is the same mass of water in the cylinder, which is also the same as in the boiler and the Rayburn so I cant tee the rayburn off into the rads as its already connected to them via the thermal store.