Lee
I will post the picture but that is what mine is - a fancy supply (my H & M is twin inlet) that needs the main inlets disconnecting each time and it then needs screwing onto the existing inlets.
Pain in the arse but good for the twin inlet.
I look at what it would cost if the system freezes up and when it gets cold into the van the antifreeze goes.
We drop the brass filter into the tub of antifreeze, switch her on, without the lance and when AF comes through switch it off. Switch it on in the morning back into the same drum.
It had a set up system when I bought it but when I had the upgrade pump out it came.
Rob