Heatrae Sadia Megaflo question

[nebby]

As per above have this system, hot water & central heating supplied by this system.

I am about to remove a radiator adjust the pipework slightly to fit a new towel radiator, my question is the system has no expansion tank or pressure guage, so if i fill the system back up via filling loop how will i know if it's correct and where does the expansion go? or am i missing something.

System is about 10 years old.

 

[SimonJohns]

You will not affect megaflow by doing radiator work

What boiler do you have? You may affect that

 

[nebby]

Not sure about boiler, it is gas not oil or anything else, i am having to change radiator valves so draining part of the system.

Why would boiler make a difference?

 

[SimonJohns]

Because the rads are connected to the boiler. Not the mega flow

Does the boiler have a filling loop
Or do you have a tank in attick

 

[nebby]

Have filling loop from what i have seen, there should not be a loop next to tank for any other reason should there?

Have worked on a couple of megaflo systems before just not like this.

 

[SimonJohns]

Have filling loop from what i have seen, there should not be a loop next to tank for any other reason should there?

Have worked on a couple of megaflo systems before just not like this.

I would get a professionals to help you. I think you need it

 

[nebby]

Have just read your reply again, loop i have seen is at megaflo tank.

I take it you mean a gauge & loop at boiler

 

[Best]

Yes, most sealed system gas boilers will have a filling point at boiler.
Don't mess with the Megaflo - you shouldn't be near it, as you must be qualified for unvented ( actual law - take a look at unvented exploding on utube! ) & you are obviously not even a plumber.

 

[Billy Bob Bob]

Mythbusters - Water Boiler Explosion in House - YouTube