Replacing a hot water cylinder

dazmanplumber · 2 Nov 2009

Hi everyone,

was wondering if any one could point me in the direction of a link for replacing a hot water cylinder. If not my brother has an aga which supplies his hot water cylinder with hot water,his cylinder is laking at the moment and he wants to replace it like for like.

The cylinder is 900x450 and is a vented cylinder. isolating and emptying the cylinder is ok, but the flow and return pipework from the aga to the cylinder is where im getting stuck. Is there a drain cock near the aga does anyone know and is it pretty easy to isolate so i can disconnect it.

Also if possible could someone suggest a reasonable priced shop, site to buy a new cylinder would be very grateful.

Many thanks lewis

bellairaphon · 2 Nov 2009

isolate the feed and expansion for the central heating tank then drain the heating system by a drain valve or by removing a rad and drain down off that.

Nath

dazmanplumber · 2 Nov 2009

cheers

there are no radiators or central heating. the aga just supplies the hot water so i could isolate it i suppose then just check for a drain cock.

any ideas roughly on prices for a standard 900x450 cylinder with an immersion heater.

thanks

holty · 2 Nov 2009

is the cylinder direct or indirect.i.e have you two tanks in the loft or one.a standard 900x450 is about £300.

kevplumb · 2 Nov 2009

so i could isolate it i suppose then just check for a drain cock.

if you can't find one fit one while its drained

kirkgas · 2 Nov 2009

not sure where in cornwall you can buy a tank at a good price, but you will need to buy one of the correct grade, (ie height from water level in loft tank to bottom of cylinder determines the grade required) i THINK grade 3(which is the cheapest) does up to 10m, going to grade 2 then most expensive grade 1.

dazmanplumber · 2 Nov 2009

im in launceston area but i spotted this on screwfix would this do the job.

http://www.screwfix.com/prods/47140...nders/RM-Indirect-Copper-Cylinder-900-x-450mm

i will check on grade but i think its grade 3.

holty · 2 Nov 2009

city plumbing gave us best quote on a 1500x450 indirect last week 300+vat even plumb centre quoted 320.grade 1 is more unvented territory. as most common is grade 3.

kirkgas · 2 Nov 2009

dazmanplumber";p="1392303 said:
im in launceston area but i spotted this on screwfix would this do the job.

http://www.screwfix.com/prods/47140...nders/RM-Indirect-Copper-Cylinder-900-x-450mm

i will check on grade but i think its grade 3.[/quote

this cylinder will do IF there is less than 10m from the water level in the loft tank to the bottom of the cylinder
PS i think a grade 4 is available for up to 6m

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Replacing a hot water cylinder

holty

holty

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