Starting with the easy the Grundfos pump up to 2/3 yrs ago the pump feed from the tank was half way down the tank to the wall side. Unseen it was leaking and the flooring is chipboard, why planning ever aloud chipboard I’ll never know as when wet it goes like cardboard, so the whole shower room floor had to be replaced.
The British Gas engineer moved the Grundfos pump feed to the top of the tank at his suggestion and my agreement. The cable is not live, the pump outflow through the floor to where god knows but won’t tell me.
Now for the blue C/H pump 22mm pipe topped with the auto air release valve with the first tee off 22mm round the wall through the M.V into tank half way up one gate valve just in part view.
Next tee off down is 22m through M.V then through floor .
Next tee off 15mm which has first tee off through floor 15mm follows on bend to gate valve then tee off 22mm to tank through gate valve to bottom side of tank. The 12mm then changes size as it goes through floor to 22mm. All but the Grundfos red pump is in the C/H circuit or it appears so to me. I can understand the system in part that the feeds to the tank are the tank coil feeds in and out ie; the coil gets hot from heated water from boiler and in turn heats the water surrounding it in the tank. That’s my lot with C/H except how to remove a rad and or bleed them but that’s rare since the engineer fitted the auto air release valve. Some rads you can hear the water rushing through couple of others click, none ‘kettle’ or feel cold at the bottom (air or blocked veins) my terminology might be crap my apologies. Just hope it makes sense.
I've got into this pic posting now would do one of me but its frightening that's why we have no mirrors in the bungalow.