What 
I HAVE HAD A POWER FLUSH TODAY IN MY C HEATING AND...
- Thread starter david3331
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tds refers to "total disolved solids". This is a measurement of the quality of the water. Your tap water is 530, the system water before cleaning was 880 and after cleaning was 550. Powerflushing aims to get within 5% of the tap water figure.
PH refers to the acidity or alkalinity of the system water. Around 7 is neutral. The system water is tested to make sure it is not left acidic after using some of the more aggresive cleaning chemicals.
Your boiler is a Potterton Puma or Combi model. This boiler does not contain a secondary heat exchanger. It has a single bithermal heat exchanger. I assume he must have connected onto the existing boiler pump and fired the boiler in order to flush correctly.
To descale the "secondary heat exchanger" would entail disconnecting the hot and cold pipework to the boiler. I have my doubts that the "secondary" flushing was carried out since the "water saving feature" of this model makes the process difficult. Only a pump with a heater would do the job unless the boiler was stripped down sufficiently.
Impressive going for 5 hours work if it was done properly.
So what was the problem with the system - why did it need powerflushing.
PH refers to the acidity or alkalinity of the system water. Around 7 is neutral. The system water is tested to make sure it is not left acidic after using some of the more aggresive cleaning chemicals.
Your boiler is a Potterton Puma or Combi model. This boiler does not contain a secondary heat exchanger. It has a single bithermal heat exchanger. I assume he must have connected onto the existing boiler pump and fired the boiler in order to flush correctly.
To descale the "secondary heat exchanger" would entail disconnecting the hot and cold pipework to the boiler. I have my doubts that the "secondary" flushing was carried out since the "water saving feature" of this model makes the process difficult. Only a pump with a heater would do the job unless the boiler was stripped down sufficiently.
Impressive going for 5 hours work if it was done properly.
So what was the problem with the system - why did it need powerflushing.
(tds) total disolved soilids , it's a parts per million reading.
(tds)shows your tap water, what the system was like before he carried out the work and a final reading after the work.
and ph reading same as above (to make sure any chemicals he used are no longer in the system)
(tds)shows your tap water, what the system was like before he carried out the work and a final reading after the work.
and ph reading same as above (to make sure any chemicals he used are no longer in the system)
david3331 said:
Yes they should send off a water sample to sentinel to determine the quality of the water. A Bg powerflush does not always mean flushed with a powerflushing machine
it is down to the system and individual engineer, not many combis can be powerflushed and may require individual manual flushing and cleaning of the rads and heat exchanger(s)Sponsored Links
Did I miss something about having a Puma in this saga?
"I see" said the blind man as he spoke to the deaf girl.
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Bambergaspipe said:
You are a british gas Muppet, nothing else, mostly hated by hardworking engineers & despised for your brainwashed beliefs. Wake up, you don`t always have to be a moronic numpty. This is how Hitler started.
blah blah blah. another man with a stupid an pointless point of view.
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