Placement of TRV in domestic cylinder

[Twinhawk]

Quick question...leak in old CWSC cant fit new one up ..so pressurised .. where do i fit TRV could i alter a surry flange and install there? or is there a standard way?

 

[tipintim]

Dont make sense mate
cwsc cold water storage c
presurised
trv on sury flange

what are you trying to do, post picture

 

[PlumbBobBob]

also confused although doesn't take much lol.

 

[Twinhawk]

Right Prevously a tank, totally froze and split from connections outward, on pressurised (unfinished pic) mains going to 1.5bar prv, teed to cold, Check valve, teed of expansion vessel and 3bar blow off then to feed hot water cylinder. still need to fit temperature relief valve,

 

[Resolute]

I read TRV as Thermostatic Rad Valve!

 

[Twinhawk]

OO sorry just used to my own shorthand...

 

[tipintim]

OK . Im getting the picture.
What is your specific question. No abreviations please

 

[Twinhawk]

Where do a fit the temperature relief valve on the hot water cylinder, as there is not one or connections because willis immersion installed

 

[PlumbBobBob]

presumably this is on heating side not hot water side?

 

[Twinhawk]

no, its on the hot water, im just being carefull because a fella i used to work with blew up 3 and imploded 1

 

[tipintim]

That doesnt look right
You fit the presure relief off the expansion
List the pipes
what is that 1" telescope
what boiler have you got
post pictures of cylinder, can it be presurised

 

[tipintim]

Is this just a domestic cylinder or a heating system
i.e emersion or a boiler

 

[Twinhawk]

pressure relief valve is off the expansion, pressure relief and expansion can be fitted anywhere, think you are referring to the old overflow,
drawing attached

 

[PlumbBobBob]

is what you are doing trying to convert vented hot water to unvented pressurised? if so you must have your unvented ticket.

 

[Twinhawk]

Is this just a domestic cylinder or a heating system
i.e emersion or a boiler

aye just a domestic cylinder oil fired boiler, fairly well installed system, shame bout temperature, destroyed whole house

 

[PlumbBobBob]

also you cannot use a vented cylinder in this situation as it is not constructed to hold such pressures and will split at the very least as your friend has already discovered.

 

[tipintim]

Sorry bud, but your on the road like your ex boss, that blew up and inploded.

Can you post picture of cylinder

 

[Twinhawk]

well its been pressurized and held at 1.5 bar....no other safety devices to prevent this?

 

[tipintim]

Dont want to be rude, but are you competant.
You ask for advice yet dismiss it. Some systems are not fit for others.
Steveb gave you some good advice.

 

[Puddle]

..no other safety devices to prevent this?

yes,imprisonment !

and large fines !


imho

 

[Twinhawk]

no...im at home now,,,its just a normal cylinder...havent priced for a megalflow.....thinking

 

[Twinhawk]

away for a drink...to ponder, i think my dad has a few megaflows somewhere im not getting a tank up there im a 28 waist and i can just get in the roof space ffs

 

[tipintim]

Calm down now. We here to help.
Take a photo of cylinder.

 

[Billy Bob Bob]

think op may just be trying to pressurise ch side cylinder coil? if he,s on about pressuriseing a normal vented cylinder,bomb waiting to go off

 

[Twinhawk]

Ill get a picture and as far s competance goes.....back to black iron for me...certificates mean **** still learning

 

[tipintim]

Twinhawk
IM not beating up on you but concerned. Let people help you.
The tank you show looks like a 25 ltr ?
That cant be feeding a cylinder?

 

[Twinhawk]

no the f+e is above it, its all systems where gravity, pipe burst everywhere and that 250+tank froze, also ive had it presurised (1.4 bar on the button area is around 4 bar fills a kitchen sink in about a minute with the plug out its sickening) and running already, turned water of and opened taps when i left, 28mm to hot water cylinder you can see cut in bottom left and just past 22mm to cold taps in bathroom...

 

[Blackcatgas]

think op may just be trying to pressurise ch side cylinder coil? if he,s on about pressuriseing a normal vented cylinder,bomb waiting to go off

Looking at his sketchs hes going to pressurise a vented cylinder.
Twinhawk ,dont do it. at the very least it will split, at the worst there is enough power in the resulting explosion to pull down the side of your house.
Use a coffin type water tank to replace the split one in the loft that will slide through your loft hatch.

 

[Billy Bob Bob]

right,could not work out his sketches thanks BCG,as said to the op dont do it buddy,death or serious injury to yourself or family awaits

 

[andrewcplatt]

Get somebody in who knows what he is doing boet!