Very high water consumption

[JX350C]

Can you have a look at the photo.

Here are some pictures of that valve and connections closer up. The pipe in the top of it is the main cold water feed which has the large blue isolation valve on it.

And the above image shows how it connects to the cylinder. This pipe by the way is quite hot but I presume that's because it's connected to the cylinder.

 

[John.g]

Yes, (as Shaun pointed out), its the expansion valve probably set to 6bar since the cylinder temperature and pressure relief valve is set to 90C/7bar.
Theres another pipe underneath this expansion valve going off to the right?, where is the expansion vessel connected into the system
Are you absolutely sure that there is no water flowing down through the tundish.

 

[JX350C]

Yes, (as Shaun pointed out), its the expansion valve probably set to 6bar since the cylinder temperature and pressure relief valve is set to 90C/7bar.
Theres another pipe underneath this expansion valve going off to the right?, where is the expansion vessel connected into the system
Are you absolutely sure that there is no water flowing down through the tundish.

That pipe off to the right goes to a large white tank. I've taken some other pictures of the whole install but here is one showing that large white tank. And I do keep checking the tundish and there doesn't appear to be anything dripping through it.

 

[John.g]

Thats fine, its to the expansion vessel.
The cold water to the cylinder shoud not be hot except maybe very close except its flowing back and out through the expansion valve and down through the tundish when the cylinder is heating up and if the expansion vessel has failed but should still only expel a few litres of water each time the cylinder is heating up.

 

[JX350C]

Thats fine, its to the expansion vessel.
The cold water to the cylinder shoud not be hot except maybe very close except its flowing back and out through the expansion valve and down through the tundish when the cylinder is heating up and if the expansion vessel has failed but should still only expel a few litres of water each time the cylinder is heating up.

Ok thanks. That pipe is hot most of the way up until it gets near the T and then it's cooler above and to that white tank.

 

[ShaunCorbs]

If you turn the silver screwdriver valve off does the water meter stop ?

 

[JX350C]

If you turn the silver screwdriver valve off does the water meter stop ?

Sorry, which one do you mean?

 

[ShaunCorbs]

Sorry, which one do you mean?

The one by the white vessel 15mm silver valve on the hot

 

[JX350C]

The one by the white vessel 15mm silver valve on the hot

Ah ok. That one is to the feed for the showers. I'll try it. Thanks

 

[John.g]

Can you just switch off the laundry supply to get the meter to stop turning and then check the meter readings while filling a 10 or 20L bucket to confirm that it's metering correctly.