Identifying cold water supply pipes

[michaelw]

Hello ladies and gents - I have a very easy question that I need help with and had no idea where to ask so thought this would be as good a place as any.

I need to find out which pipe is the cold water supply in the upstairs of my house.

I can easily tell which one it is downstairs because I can trace the pipes to the cold water taps and to the stopcock. Upstairs however there are no taps, just a boiler. I can't turn the boiler on and see what pipes warm up and what don't because the previous owner didn't pay their bill and the gas has been disconnected.

I have a logic combo 30 boiler and has seven pipes emitting from underneath. I simply need to know which of these pipes is the cold water supply. Simple as that!




Thank you so much!

 

[ShaunCorbs]

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If you have a look under the boiler they should be labelled

 

[michaelw]

 

[ShaunCorbs]

First pipe on the right of the white centre pipe

(The one with the silver bubble on)

 

[michaelw]

First pipe on the right of the white centre pipe

(The one with the silver bubble on)

Thank you Shaun for your speedy reply!

 

[Last Plumber]

Hello ladies and gents - I have a very easy question that I need help with and had no idea where to ask so thought this would be as good a place as any.

I need to find out which pipe is the cold water supply in the upstairs of my house.

I can easily tell which one it is downstairs because I can trace the pipes to the cold water taps and to the stopcock. Upstairs however there are no taps, just a boiler. I can't turn the boiler on and see what pipes warm up and what don't because the previous owner didn't pay their bill and the gas has been disconnected.

I have a logic combo 30 boiler and has seven pipes emitting from underneath. I simply need to know which of these pipes is the cold water supply. Simple as that!




Thank you so much!

More often than not the darkest copper pipe, (presuming they are in copper of course) would be cold.
The fact that is is always cold means that there is more condensation on it than any other pipe and therefore more oxide.
Having said that, I am speaking as a person with a trained eye. There are normally other indicators that would help identify it. For example, it would quite often on route to a bathroom be alongside a hot pipe. one would be lightly oxidised and the cold heavily oxidised.

Do not blame me if you cut the wrong one!

I haven't seen the job

 

[robj20]

Why does it have 2 filling loops?

 

[Harvest Fields]

Why does it have 2 filling loops?

Previous owner may have been elderly and could not work the built in ones