Need help in turning off the water

[Rexxx]

Hello

I need some help in turning off the water for my house to perform a small upgrade.

There are 2 floors and separate apartments but the water is shared for everyone. There is a shared meter. The meter on the picture stupidly built into the wall and the valve on it does nothing so I assume that is not even the main meter.

I uploaded some pictures of my basement, its a mess down there. There is this huge oil radiator thingy but I am not sure if this heats up the water for the tap/shower or only the oil for the radiators which is circulated in the building.

I cannot find the main meters anywhere either which would probably have a valve before them to make them possible to repair.

Any clues? Where should I be looking for the main cold water tap?




















NEW PICTURES
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I have tried the 2 rusty (black and red valves up there) made no difference in cold or hot water. If they control the hot it might be the case that the boiler buffers water in that white tank on one of the pictures but all I need is just the regular cold water. I don't see a reason why that would go through that big red boiler.


Thanks

 

[frodo]

3rd picture shows 2 blue handle's turn blue handle 90 degrees.

 

[Rexxx]

I don't think that is the main water valve. As I said there is a separate oil hearing system installed there, this is what that big red boiler is.

What's not clear to me is: is this big boiler used for both systems (the oil radiator) + drinking/showering hot water or not?

I see 2 meters on that both showing plus temperatures.

 

[frodo]

the piping is insulated, makes me think its a water line

i do not know, not enough information, back up take a picture of the piping in the system

 

[Rexxx]

Hi,

I have made new pictures on the weekend!

Any help is appreciated.

 

[Mr_David]

1st pic is water meters. 1 for each unit I would presume.
Where do the lines come & go after they go through the wall.
That chrome handle near the upper one could be a valve.
BUT I have neeeeeever seen one like that before.

The blue handles are on a circulating pump for the water heater.
Those are temperature gauges.