i need to drain a vokers syntesi 25 boiler

[Tahir Taj]

i need to drain a vokera syntesi boiler

 

[jj4091]

Turn & hold the pressure relief valve until it drains via the overflow.

 

[Madrab]

Turn & hold the pressure relief valve until it drains via the overflow.

I wouldn't recommend doing that, they have a habit of not re-realing properly when older.

You system should have a drain point on it, or drain via the closest rad. Shut the rest of rads down to retain most of the system (hopefully inhibited) water.