Hopefully the pic is clearer. In a Bungalow just to clarify.
Airing cupboard in Shower room.
The red pump at back is a 'Danfoss' and nothing to do with central heating. The top gate valve is closed turns about 1/2" (play) then stops dead. Bottom don't know if its on or off same thing can't turn it. Haven't a clue what its for I don't think it was for the old shower. The top pipe was entering the side of old tank now In top of new tank. Kitchen 33mts away but can't see its for that otherwise I'd get no hot water.
Am I correct the two white boxes in the pipework are motorized valves but why two in same system when its not separate. Top is Sunvic bottom one in vertical pipe is a Satchwell.
Brass fitting in blue c/h pump pipe believe to be auto air expeller.
however looking at the pipework it appears a bad DIY job.
Perhaps being too harsh as not being trained done better with water not gas which I wont touch, can but won't.
Sorry about the waffle its the only way to explain adding pics,
To resize pictures to fit select your jpeg picture/photo don’t open it. Right click on the picture to bring up a menu. Click on ‘edit’. And a large image page should show. At top left you’ll see ‘resize’ click on this and a Resize/skew window opens showing percentage. Select the pixels circle and the value boxes will change to amount of pixels. Change the Horizontal to 375 the vertical changes automatically. Un-check the ‘maintain aspect ratio’ click on Ok then save add the 375 to end of existing name or rename so the original stays says size before you started, you then have two the same but different in size. Go back to your message in Diy doc scroll down see File name browse and ‘add image’ where you add photos/pics , click browse find your resize picture click to select and click ‘open’ then it goes back to diy doc click ‘Add image’ if successful it goes back to your question and scoll down to ‘POSTED ATTACHEMENTS see the image title you then know its on their. Scroll down select Preview and there is your picture and question. Job done. Don’t forget 375 pixels will do it.