Replacing hot water cylinder.... Help!

[redcuckoo]

Hi,

Im about to replace my vented indirect hot water cylinder for a larger one due to lack of hot water. I have bought an identical cylinder, ie vented and indirect but larger in size and i have noticed a couple differences. 1, on all the connections i was expecting them to be external threads so i use could compression fittings but this is not the case, they are all internal threads, so what sort of connections would i use for these??? 2, on the cold water feed side of the cylinder there is also another fitting higher up which i do not have on my original tank, could anyone tell me what this is for???

I would be grateful of any help!

 

[Tjdservices]

Photos would help, is the cylinder stainless or copper as the threads normally differ accordingly. Personally I think you may be taking too much on and it may be beneficial to get a professional in.

 

[ShaunCorbs]

Male iron and maybe hot secondary return pics would help

 

[redcuckoo]

Hi,

Just to add its a stainless steel cylinder. Ive added some pics. 1 of the top showing the detail of the outlet thread and another pic of the cold feed side.

 

[redcuckoo]

Hi,

Just to add its a stainless steel cylinder. Ive added some pics. 1 of the top showing the detail of the outlet thread and another pic of the cold feed side.View attachment 24159

 

[ShaunCorbs]

Yea secondary return or a separate pump outlet and your looking for either 1 inch to 22mm or 3/4 to 22mm depending on tapping

 

[redcuckoo]

basically my smaller cylinder doesnt have that so i take it i can just blank that off???

 

[Rickster123]

Is that cylinder in the loft? A leak on that will get messy very quickly. There may be trouble ahead...

 

[snowhead]

That also needs more support under it than just Chipboard.

 

[gassafe]

Yikes, are you supplying hot water to the whole street? Can't be much head of water if the tank is in the roof, where is your cold water storage Tank??

 

[gassafe]

I thought the stainless ones came with nuts & olives? Won't brass fittings into a stainless tank cause some sort of corossion or am I barking up the wrong tree?

 

[Chalked]

60 gallon cylinder!

Over half a ton on ceiling joists!!!!

 

[gassafe]

60 gallon cylinder!

Over half a ton on ceiling joists!!!!

On nice weetabix chipboard :/

 

[dean.diy]

bet that was fun going up the stairs and through the hatch

 

[redcuckoo]

Its a 45 gallon cylinder. Which when worked out weights 375lbs = 0.17 tonne, so not quite over half a ton!

 

[Meady]

45 gallons is just over 200 litres of water. Water weighs roughly 1kg per litre, plus the weight of the cylinder, so probably about 250kg.

 

[chris watkins]

Just to make you aware recuckoo, under the Building Regulations AD Part G 3 (the Law) you should be using (or be) a competent person who can notify the new installation to your local Building Control.

http://www.planningportal.gov.uk/uploads/br/BR_PDF_AD_G_2015.pdf

Even if you don't do this you should comply with the requirement in part G3 they are there for good reason.

 

[jtsplumbing]

You got any photos of other side of cylinder ? what boiler is providing the heat ? why do you use so much hot water ?

 

[redcuckoo]

The cylinder we have at the moment holds about 90 litres and is hooked up to a power shower so its empty in about 5 minutes even when the boiler is switched on heating the cylinder and the immersion. Thats why i bought a 200 litre cylinder, its the same vented indirect and the water cistern is about 2 mtrs above in the apex of the loft.

On the opposite side of the cylinder is the two fittings for the feed and return of the boiler.

 

[jtsplumbing]

Lot of expense for an extra 5 min in the shower.

 

[redcuckoo]

Tell me about it! The only reason im doing it is to stop the moaning i have to hear from the Mrs's! Im starting to think i would be better off trading her in!

 

[jtsplumbing]

Tell me about it! The only reason im doing it is to stop the moaning i have to hear from the Mrs's! Im starting to think i would be better off trading her in!

Be more cost effective ! your water bill must be awful bet she showers twice a day, did you consider a good electric shower

 

[Best]

Silly if your Mrs can use all that hot water up having a shower.
Very wasteful. To have used all the hot water in your cylinder would have required cold water to have been mixing as well. That must be 40 or 50 gallon!

 

[Best]

I think I would just leave my old cylinder untouched and just replace my Mrs if she used all the hot water. :grin:

Joking!

 

[redcuckoo]

It has crossed my mind!