I just had to share this one.

Got called to this job a few days ago to find what I would in simple terms call criminal! A central heating system installed about 7 years ago and signed off by council. To the left there (not very clear) are 2 x 50KW gas boilers supplying heat to system that provides hot water and radiant heat to a 150 room complex. Here some brief system specifications:

• The central Heating is open into the domestic so the water that you are heating the rooms with (steel rads!) is the same water you shower and drink
• No munzen rings, here its all hanging off 5mm wire and the list goes on.

All circulation pumps are leaking and the storage tank that you see is the first in line supposedly to pump into a second one to provide a large storage capacity, this doesn't work correctly due to the design of the pipework and is resulting in the boilers heating water that is never used. The expansion vessel drain is a 15mm dux pipe (I doubt that the expansion vessel has been sized correctly).

The first thing that hit me is the smell of gas when I opened the door. NO ventilation, good think im not a smoker, imagine walking into that thing with a cigi. The things you sometimes find 



Linkback: https://www.plumbers.nz/central-heating-and-underfloor-heating/8/central-heating-boiler-room-from-hell/1132/