Megaflow Unvented Mains water heater - no pressure

[canarygirl228]

Hi All

The pressure on my Megaflow unvented water heater has dropped to almost 0.

My plumber is not able to come out for a few days to adjust the pressure and I have no hot water/heating. I know that he adjusted the black switch/lever and I just want to know if it is ok to do this and if it is anyway dangerous if there is no pressure. I have attached a couple of pictures.

Thanks so much in advance.

 

[picasso]

Hi canary girl , your boiler wont work with no pressure in it so you have to look for something that resembles this

Untitled

• picasso
• 25 Jun 2010
• 12

your may have two black handles or just as in the picture, all you have to do is open the tap/s and watch the dial you have posted the picture of and when it gets to 1 turn the tap/s off

simple really.