UnVented System - Bleeding radiators

[iwaters]

I have a Vailiant EcoMax Pro 28E boiler and a megaflow unvented system.

A couple of radiators are only getting hot at the bottom. I was going to bleed them but then I read that I need to re-pressurise the system afterwards. It said that this is done by usually opening the tap on a flexibile connection, which I have found below:

Untitled

• iwaters
• 8 Oct 2011
• 1

However, I also read that the EcoMax boilers have a fill tap built in, which I wonder could be here?:

Untitled

• iwaters
• 8 Oct 2011
• 1

How do I fill the system?

Also with the heating and water off the pressure guage in the first picture was less than 0.5 bar, should it be higher than that?

 

[Dan Robinson]

It's the two black toggles in your first picture. Turn the one after the other order is irrelevant).

Turn one off when the black needle is at 1.5.

Bleed your rads (start on the lower floors).

Check the gauge every so often and top up as needed. When finished. Turn black toggles back to 90 degrees as they are in the picture.

Strictly speaking you should take the silver hose off too when done.


Simples.

 

[twgas]

use the fill loop in the first pic, the second pic shows the gas connection.