is it ok

[eddiebrown424]

to pressurise the primary side i.e. heating on a vented cylinder. I was told it is ok but it doesnt sit right with me I would prefer one system or another but of cours I am probably wrong.

eddie

 

[kris]

Of course it is as its the hot water thats vented. Cyl stat for control

 

[kris]

As long as the pressurised circuit has appropriate safety ie prv, ex vess .stat

 

[kozak1968]

Yes. you wouldn't normally put more than 3 bar into it. Don't forget to install a prv, expansion vessel and controls.

 

[SimonG]

And boiler has high limit stat.

 

[teabreak]

Eddie, Kris is of course correct. This is how a 'system' boiler works, either Gas or Oil. As long as the Cylinder is a Double Feed Indirect to BS1566 Part 1. The primary (heating) water and the secondary (domestic hot water) are separated by a physical heat exchanger or 'coil'.
An electrical Cylinder Thermostat will control the primary circuit via a motorised valve.

 

[eddiebrown424]

Eddie, Kris is of course correct. This is how a 'system' boiler works, either Gas or Oil. As long as the Cylinder is a Double Feed Indirect to BS1566 Part 1. The primary (heating) water and the secondary (domestic hot water) are separated by a physical heat exchanger or 'coil'.
An electrical Cylinder Thermostat will control the primary circuit via a motorised valve.

Thanks guys wasnt sure re the coil in a vented but thats why i love it here so much knowledge......

cheers

Eddie