How to descale a Truma water heater with vinegar or citric acid. (1 Viewer)

[scotjimland]

The Truma website it will tell you to de-scale as follows: -

“For hygienic reasons you should decalcify the water container occasionally. Use special decalcification products from camping specialists or conventional vinegar essence or citric acid, for example.

Fill the decalcifying product in the recommended ratio into the appliance via the water system, allow it to work and then rinse the Combi heater thoroughly with fresh water”

Following an email to Truma I received the following reply:

“Please find below instructions for descaling the Truma water heater:
Dilute 2 litres of white wine vinegar into 10/12 litres of fresh water, introduce into your water system via your water inlet, (removing the filter if one is fitted for this process) open the taps to pull through to the heater and then leave the solution in the heater for 4 to 5 hours and then flush through with fresh water”.


I have also been provided with the following additional advice concerning the use of Citric acid:

The ratio Truma recommend is 1 tablespoon of citric acid to 1 litre of water”.

My preference is Citric Acid.
Make up the solution of Citric Acid,

I used an 11lt watering can and poured the solution into the fresh tank, then pumped through all taps, hot and cold, including shower head, and toilet flush.

Drain down and flush system with plenty of fresh water..

This will also descale the water tank level probes

The same method can also be used for cleaning the Thetford toilet cassette

 

[chesterfield hooligan]

I've read you can descale with cheap cocola then flush I've never tried it just a option.

 

[VXman]

I've read you can descale with cheap cocola then flush I've never tried it just a option.

I've heard that for cleaning out the grey water tank but not for descaling a water heater.

 

[scotjimland]

Citric acid is reactive cheap, £5.99 per kg on Amazon ..and it has many other uses..

As for cheap cola..
yes, it does contain citric acid but has many other ingredients, so I wouldn't use for descaling a Truma and considering you would need at at least 12 bottles , it wouldn't work out "cheap" .. nor is it as strong or as effective as pure critic acid

 

[Bailey58]

Is this the scotjimland of Singer, and other, sewing machine fame? Welcome back!

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[scotjimland]

Is this the scotjimland of Singer, and other, sewing machine fame? Welcome back!

The very same , thanks

 

[dunnah01]

I'm going to descale the water system with citric acid - how many grams of citric / litre of water should I use? Everything seems to be in tablespoons. I was thinking of a 10% solution by putting 2kg in 20l of water and leaving it in the truma combi 6e system and pipework for 2-3 hrs. Will this do the trick or dissolve the pipework

 

[Riverbankannie]

I'm going to descale the water system with citric acid - how many grams of citric / litre of water should I use? Everything seems to be in tablespoons. I was thinking of a 10% solution by putting 2kg in 20l of water and leaving it in the truma combi 6e system and pipework for 2-3 hrs. Will this do the trick or dissolve the pipework

I think it will be ok but 2 kg seems a lot. If I were at home I would go and weigh a tablespoon full for you. 2 tablespoons a litre.

 

[jdk62]

Is a tablespoon not 45g?

 

[dunnah01]

Is a tablespoon not 45g?

Google seems to have it at 15g which equates to 600g to 20l.
45g would be about 2kg to 20l

I think I'll try with 1kg to 20l but buy 2kg and give it a second dose if the first dose isn't very effective

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[iandsm]

The Truma website it will tell you to de-scale as follows: -

“For hygienic reasons you should decalcify the water container occasionally. Use special decalcification products from camping specialists or conventional vinegar essence or citric acid, for example.

Fill the decalcifying product in the recommended ratio into the appliance via the water system, allow it to work and then rinse the Combi heater thoroughly with fresh water”

Following an email to Truma I received the following reply:

“Please find below instructions for descaling the Truma water heater:
Dilute 2 litres of white wine vinegar into 10/12 litres of fresh water, introduce into your water system via your water inlet, (removing the filter if one is fitted for this process) open the taps to pull through to the heater and then leave the solution in the heater for 4 to 5 hours and then flush through with fresh water”.


I have also been provided with the following additional advice concerning the use of Citric acid:

The ratio Truma recommend is 1 tablespoon of citric acid to 1 litre of water”.

My preference is Citric Acid.
Make up the solution of Citric Acid,

I used an 11lt watering can and poured the solution into the fresh tank, then pumped through all taps, hot and cold, including shower head, and toilet flush.

Drain down and flush system with plenty of fresh water..

This will also descale the water tank level probes

The same method can also be used for cleaning the Thetford toilet cassette

That's useful thank you. Can I ask how long you left the citric acid solution to dwell in the system before flushing it through?

 

[BouncyBoatFolk]

The Truma website it will tell you to de-scale as follows: -

“For hygienic reasons you should decalcify the water container occasionally. Use special decalcification products from camping specialists or conventional vinegar essence or citric acid, for example.

Fill the decalcifying product in the recommended ratio into the appliance via the water system, allow it to work and then rinse the Combi heater thoroughly with fresh water”

Following an email to Truma I received the following reply:

“Please find below instructions for descaling the Truma water heater:
Dilute 2 litres of white wine vinegar into 10/12 litres of fresh water, introduce into your water system via your water inlet, (removing the filter if one is fitted for this process) open the taps to pull through to the heater and then leave the solution in the heater for 4 to 5 hours and then flush through with fresh water”.


I have also been provided with the following additional advice concerning the use of Citric acid:

The ratio Truma recommend is 1 tablespoon of citric acid to 1 litre of water”.

My preference is Citric Acid.
Make up the solution of Citric Acid,

I used an 11lt watering can and poured the solution into the fresh tank, then pumped through all taps, hot and cold, including shower head, and toilet flush.

Drain down and flush system with plenty of fresh water..

This will also descale the water tank level probes

The same method can also be used for cleaning the Thetford toilet cassette

Nice one, well explained. Can I add a small caveat, rinse through very thoroughly, use a finger to taste the water occasionally as flushing through, it won't poison you. When the water is tasteless you're done, set the taps to open and midway point of hot/cold. The next day check they are still operating. The taps can seize in place if insufficient flushing has been carried out, and I know this because .
Mike