correcting ph of heating systems

[Gary80gas]

I recently power flushed with an acidic solution on a particularly dirty system. I drained and refilled and added the neutraliser crystals and test the ph. It was a bit disturbing to find it was still about 5 ph. So I repeated to get it down to about 7.5.
I just wondered what solutions/methods everyone else was using to bring ph to correct safe levels? What level is perfect?

 

[Harvest Fields]

Between 6.5 and 7.5 I believe.

 

[Riley]

As Harv says. But adding more neutraliser is quite common it’s dependant on the size of the system

 

[Gary80gas]

I just did a test on my mains water tap and got a ph of 5. Does that sound right? That would mean most heating systems are filled with a ph of 5? Slightly acidic maybe? Your views

 

[Harvest Fields]

I just did a test on my mains water tap and got a ph of 5. Does that sound right? That would mean most heating systems are filled with a ph of 5? Slightly acidic maybe? Your views

Tap water in my area is more than that.

 

[Gary80gas]

By more than that you mean 6 0r 7. Which sounds healthier.

 

[Harvest Fields]

Anywhere between 6.5 and 8.5 dependant on location should be ok. 5 is too low.

 

[Last Plumber]

I would get it hot and drop it out completely, then refill and leave it to run a few hours before re-testing and if need be re-dosing with neutralizing crystals.