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Sulphuric Acid

This should not be a problem. (assuming you are talking about combustion acid and condensation.

Sulphur dioxide and sulphur trioxide form when fuel that has suplhur in it (most anyhinh you can buy has some) is burned. When sulphur trioxide mixes with water, you have suphuric acid. When suphur dioxide goes into the air, sunlight can transform it to sulphur trioxide and then more suphuric acid.

When the boiler first starts up, there is combustion and cold surfaces, so you do get some acid formed. If the boiler is allowed to come up to around 140F, the water is driven off and everything goes up the stack. The valves that cause the water to not circulate through the boiler until high enough temps are reached are appropriately called boiler protection.

There is no difference between you turning the boiler on and the thermostat doing the same thing on call for heat. You probably turn it on much less often than the thermostat.

jerry

Comments

  • Little Tommy
    Little Tommy Member Posts: 1
    Sulphuric Acid

    I read that turning your heating system on and off several times a day may cause a sulphuric acid problem in your boiler especially during heating of boiler to 140 degrees. With the price of oil, I have been able to cut my consumption significantly by doing the above. Is the sulphuric acid a major concern and if so, is there a way to use an additive or filter to lesson or iliminate the effects/problem? Thank you so much for reading my question - Little Tommy
  • bigugh_4
    bigugh_4 Member Posts: 406


    > I read that turning your heating system on and

    > off several times a day may cause a sulphuric

    > acid problem in your boiler especially during

    > heating of boiler to 140 degrees. With the price

    > of oil, I have been able to cut my consumption

    > significantly by doing the above. Is the

    > sulphuric acid a major concern and if so, is

    > there a way to use an additive or filter to

    > lesson or iliminate the effects/problem? Thank

    > you so much for reading my question - Little

    > Tommy



  • bigugh_4
    bigugh_4 Member Posts: 406


    > I read that turning your heating system on and

    > off several times a day may cause a sulphuric

    > acid problem in your boiler especially during

    > heating of boiler to 140 degrees. With the price

    > of oil, I have been able to cut my consumption

    > significantly by doing the above. Is the

    > sulphuric acid a major concern and if so, is

    > there a way to use an additive or filter to

    > lesson or iliminate the effects/problem? Thank

    > you so much for reading my question - Little

    > Tommy



  • bigugh_4
    bigugh_4 Member Posts: 406
    Acid ?

    Unless you have introduced sulphur into your heating system, you're not going to have sulphuic acid in it.
    However Carbonic acid can be made inside a steam system. Hot water systems, in fact any system that has a lot of make up water added (if there are sulphides in the make up water) can accumulate an detrimental acidic condition. Good clean water, (potable fits this) should only be used. Once filled (and no leaks) only the small quanity of make up water should be added as needed to keep the boiler at its full mark. Some (potable) water may be extreamly hard, in this case a water softener (Flow through type) may be installed on the make up water inlet. Oxygen is the culprit in boilers. Normanly it is driven off in the boiler and vented to the expansion tank, or to the atmosphere. In steel or copper pipe systems the only place O2 is admitted is in the water. Onec removed it is no problem. Plastic piping systems must use an O2 barrier special pipe. Or have additives added to prevewnt O2 from attacking The metals in the system.
    I hope this helps
    bigugh
  • bigugh_4
    bigugh_4 Member Posts: 406
    Acid ?

    Unless you have introduced sulphur into your heating system, you're not going to have sulphuic acid in it.
    However Carbonic acid can be made inside a steam system. Hot water systems, in fact any system that has a lot of make up water added (if there are sulphides in the make up water) can accumulate an detrimental acidic condition. Good clean water, (potable fits this) should only be used. Once filled (and no leaks) only the small quanity of make up water should be added as needed to keep the boiler at its full mark. Some (potable) water may be extreamly hard, in this case a water softener (Flow through type) may be installed on the make up water inlet. Oxygen is the culprit in boilers. Normanly it is driven off in the boiler and vented to the expansion tank, or to the atmosphere. In steel or copper pipe systems the only place O2 is admitted is in the water. Once removed it is no problem. Plastic piping systems must use an O2 barrier special pipe. Or have additives added to prevewnt O2 from attacking The metals in the system.
    I hope this helps
    bigugh
This discussion has been closed.