gravity hw cylinder

[SafeGasInstall]

just quick one here :

have job to price is a bb with gravity hot water . have ripped out many but never had to change a cylinder ! well this job is to change cylinder only as customer is not willing to upgrade everything ! reason for cylinder change is that is leaking really badly from flow connection to cylinder .

my Q;as pipe work is 28mm do I have to try and find a cylinder with 28mm connection ends or 22 mm will do just as good ?

My guts are telling me that it will have to be 28mm connection as coil will be larger .


thank you for your time

stan

 

[tamz]

All cylinder coils come as 28mm. Join on with the existing female or use a new one if you like.

 

[armourer]

I assume the 28mm is because its just gravity and not fully pumped.
I would just change like for like.

 

[stevetheplumber]

make sure you specify its for gravity there are cylinders out there that are pump onlymost of the stainless ones ive seem state pump onlyalso with a back boiler you have to fit a resetable overheat stat to the cylinder if the boiler only has one stat which is the case for most back boilers

 

[AWheating]

as mentioned make sure the cylinder can cope with gravity, plenty of cylinders with small/hi recovery type coils wont work very well.

 

[SafeGasInstall]

Thank you to all that replayed ! Will call local shop to get a price !