Apologies if this has been covered before, I have looked but couldn’t find anything.
The existing central heating system in our house leaves a lot to be desired. Pumped central heating and gravity domestic hot water. The problem with the hot water is that the cylinder is about 12 foot away laterally from the boiler and piped in 22 mm pipe rather than the recommended 28mm. The result of this is that the only way for us to get a cylinder of hot water is to leave the water on ‘continuous’ otherwise it air-locks. Even then, the hot water from the boiler flows via the ‘return’ and returns via the ‘flow’.
My solution is going to be to change the system to fully pumped. While I’m playing around in the airing cupboard, I thought that I’d change the cylinder into a slightly bigger pre-lagged jobbie.
The problem is the cylinder does not have a drain off fitted to it. I’ve thought of various ways of draining the cylinder and my thought is to screw one of those self tapping valves into the cylinder supply pipe and connect a hose pipe.
Anyone know of an easier method?
Many thanks in advance.
G
PS – I’m a DIYer so will be easily baffled by complex plumbing terms.
The existing central heating system in our house leaves a lot to be desired. Pumped central heating and gravity domestic hot water. The problem with the hot water is that the cylinder is about 12 foot away laterally from the boiler and piped in 22 mm pipe rather than the recommended 28mm. The result of this is that the only way for us to get a cylinder of hot water is to leave the water on ‘continuous’ otherwise it air-locks. Even then, the hot water from the boiler flows via the ‘return’ and returns via the ‘flow’.
My solution is going to be to change the system to fully pumped. While I’m playing around in the airing cupboard, I thought that I’d change the cylinder into a slightly bigger pre-lagged jobbie.
The problem is the cylinder does not have a drain off fitted to it. I’ve thought of various ways of draining the cylinder and my thought is to screw one of those self tapping valves into the cylinder supply pipe and connect a hose pipe.
Anyone know of an easier method?
Many thanks in advance.
G
PS – I’m a DIYer so will be easily baffled by complex plumbing terms.