Hot Water Cylinder - Overflow?

[johnnycab]

Recently, the Hot Water Cylinder has been overflowing into the Cold Water Storage tank via a return pipe - which does not stop until I turn the power off to the cylinder.

I changed the heating element nearly 2yrs ago, when the old one died. It has a built in thermostat, and slots in from the top of the cylinder.

I would be extremely grateful and really appreciate it, if anyone can help me resolve this problem.

Thanks

 

[Gasguru]

Slot a new thermostat in and set it to 60 degrees.

 

[johnnycab]

Gasguru - Thanks for the reply. Is it possible to just change the thermostat or do I have to replace the entire heating element? The marking on it says 'PULLIN' and I bought it from B&Q.

Thanks

 

[kevplumb]

Is it possible to just change the thermostat

yes its fitted in a dry pocket and is seperate

 

[johnnycab]

yes its fitted in a dry pocket and is seperate

Thank you, Thank you! At present, I could not possibly handle changing the element as the nut on top of the cylinder is a b*stard to open.

Out of curiosity - Are these cylinders pressurised? I ask because this is the second time in 4yrs that something has gone wrong with the element/thermostat...am I doing something wrong?

 

[kevplumb]

no it depends on the water incalloy or titanium sheathed cost more but last longer

 

[johnnycab]

no it depends on the water incalloy or titanium sheathed cost more but last longer

If I read you correctly - If I get a titanium sheathed element which would last considerably longer (4-5yrs?) Presumably, lifetime of the thermostat should be same?

 

[Gasguru]

Titanium element should last a lot longer given the price thay are - never fitted one as customers baulk at the price.

The themostat is a seperate item and can last from a day! (for one of my customers) to several years.

 

[Nige F]

I could not possibly handle changing the element as the nut on top of the cylinder is a b*stard to open.

Not if you ,or someone you employ knows how to do it correctly Tho` some "plumbers" see the job as an easy way to a new cylinder£££