What is the correct boiler pressure??

[hellohellopal]

Hi,
I was just wondering if any body can post all the correct/recommended boiler pressure for all the populer boilers.

I need to know for SIME SUPER 90.

Thanks for viewing this post.

Your PAL

 

[oilman]

The "correct boiler pressure" should be called the correct system pressure. That is determined by the highest point in the system. Since 1 bar is equivalent to 34 feet water gauge, most houses will be around 0.5 bar for the air pressure setting and 0.7 bar for the water pressure. Some of the older boilers did need a higher pressure, but modern ones should work down to 0.5 bar and possibly less. Running the system at the lowest possible pressure puts less strain on the components, and gives more expansion capacity.

 

[hellohellopal]

thanks oilman