split cyclinder coil any1????

[Mr Flux]

Any1 come accross split cyclinder coils with newish cyclinder! I was called to a job where the heating wasnt working and this was the problem, i went to drain the heating and it started draining from the cwsc, then i turned the cold feed to the cycliner off and it started draining from the f&e! also when i turned on the gate valve which fed the heating and the f&e started back filling nd overlowing! Suspected a split coil, anyway ripped the cyclinder out and checked the 2 coils (had a back boiler coil aswell) blew throught each of them and air started coming out of the top of the cyclinder! Problem solved, ya never know with plumbing ehh what a thought was a hours work turned out to be a 2 day job.lol any1 experienced this problem with a newish cyclinder prob 10-15 years old????

 

[SimonJohns]

Newish? 10-15years?

That's not new. 12-18 months is new


It's not unusual to have a split coil thou

 

[Best]

Never seen a split coil, to be honest. Often wondered why I have not seen coils in badly corroded cylinders rotted. Have seen lots of the older types, with a " cylinder" ( whatever it's real name is) instead of a coil, failing & causing whatever is the lowest tank to o/flow. Always am afraid to plug exp & feed on those type when say, changing a rad valve as high risk of collapsing the internal cylinder, as some are weak.

 

[stevetheplumber]

i must have been lucky never had either in 40 years