E
eddiebrown424
Hi all,
I went to look at a job today in which the header tank is full of hot water and overflowing.
There is back boiler and the pipework runs upstairs to the cylinder but i can see no valves. I did not want to take out the fire and told the customer that I would prefer to do some research away from the job. Is there such a system (excuse my naivity) where there are four ports comming off the boiler for primary and secondary circuits. The system is around 30 years old and at this point i did reccommend an upgrade as in my thinking there could be several issues and it may be more financially viable/ sensible to put in a combi although i would like to resolve the problem if possible
I thought that the issue could be,
A blockage---- solution powerflush or cut out the affected pipework
overheat stat on the boiler failing although this did switch on and off when tested.
pump in the wrong position the pipe layout is not something I have encountered before i.e the primary 28mm going straight to the cylinder and returning to the boiler. with the 22 mm secondary pipework not visibly connected i.e. through a motorised valve.
A really long shot.... a split coil although i am sure Central heating water would enter the hot water and not the other way round.
I cannot see a by-pass on the system lthough i assume that if all circuits are connected at the boiler it may not need one. Also I could not see any motorised valves although i only called in as it was a friend and i stupidly thought the problem was going to be the ball valve in the cwst and a quick fix.
any advice really appreciated.
I do have some pictures but most pipework is hidden as is the boiler. I found this and not sure if it helps
https://www.google.co.uk/search?q=p...2eV1xCIbM:&usg=__dUBpzTOWixg8_GNCDJmeNln53-0=
I went to look at a job today in which the header tank is full of hot water and overflowing.
There is back boiler and the pipework runs upstairs to the cylinder but i can see no valves. I did not want to take out the fire and told the customer that I would prefer to do some research away from the job. Is there such a system (excuse my naivity) where there are four ports comming off the boiler for primary and secondary circuits. The system is around 30 years old and at this point i did reccommend an upgrade as in my thinking there could be several issues and it may be more financially viable/ sensible to put in a combi although i would like to resolve the problem if possible
I thought that the issue could be,
A blockage---- solution powerflush or cut out the affected pipework
overheat stat on the boiler failing although this did switch on and off when tested.
pump in the wrong position the pipe layout is not something I have encountered before i.e the primary 28mm going straight to the cylinder and returning to the boiler. with the 22 mm secondary pipework not visibly connected i.e. through a motorised valve.
A really long shot.... a split coil although i am sure Central heating water would enter the hot water and not the other way round.
I cannot see a by-pass on the system lthough i assume that if all circuits are connected at the boiler it may not need one. Also I could not see any motorised valves although i only called in as it was a friend and i stupidly thought the problem was going to be the ball valve in the cwst and a quick fix.
any advice really appreciated.
I do have some pictures but most pipework is hidden as is the boiler. I found this and not sure if it helps
https://www.google.co.uk/search?q=p...2eV1xCIbM:&usg=__dUBpzTOWixg8_GNCDJmeNln53-0=
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