Air getting into combi system

hubb

One thing I noticed was the upstairs rads water came out mucky compared to clean downstairs. I still can't understand why this is after a high velocity flush out.

As for testing the water, what else could it be apart from iron oxide ?

keystone

Looking for the chemicals in it.

Cheers

Mr_Ted

http://www.fernox.com/equipment/test+kits

http://www.sentinel-solutions.net/product/detail/central-heating/jetflush-and-test-kits/systemcheck-test-kit/

http://www.kamco.co.uk/Watertestkit.html

Why these arent used initially never ceases to amaze:T

Myser

Mr_Ted wrote: »

http://www.fernox.com/equipment/test+kits

http://www.sentinel-solutions.net/product/detail/central-heating/jetflush-and-test-kits/systemcheck-test-kit/

http://www.kamco.co.uk/Watertestkit.html

Why these arent used initially never ceases to amaze:T

I believe the Fernox and Sentinel ones may be specific to their products only i.e. designed to measure concentration of their inhibitors.

Mr_Ted

Myser wrote: »

I believe the Fernox and Sentinel ones may be specific to their products only i.e. designed to measure concentration of their inhibitors.

:pNot necessarilly, read the specifics about LAB TESTS;)

Myser

Mr_Ted wrote: »

:pNot necessarilly, read the specifics about LAB TESTS;)

Fernox:

All tests are suitable for use with water containing Fernox corrosion Protectors.

This service is only available if Fernox Cleaners F3 and Protectors F1 have been used. Fernox are unable to comment on correct cleaning and dosing of competitor products.

Sentinel:

Sentinel System Check is a postal service for analysis of central heating system water which has been designed to provide the installer or system owner with rapid validation of correct cleaning, flushing and treatment with Sentinel X100.

The kits and even lab tests are designed to test for their own chemical products. They cannot test for a competitor's product!

Mr_Ted

Myser wrote: »

The kits and even lab tests are designed to test for their own chemical products. They cannot test for a competitor's product!

:rotfl::rotfl::rotfl:

You dont know much about water quality analysis do you, I DO, from cooling towers, which have to have legal obligations on water quality and chemical concentrations, to commercial system, AND using my own test kits to determine needs and degradation:p

When a lab is involved and 2 samples are required as stated in some cases, IF YOU READ THE ENTIRETY and what they test for, that is to test for the impurities in the system in comparison with the supply water, NOT the inhibitor levels, that is another test that is done on site as you add them?

Specifically http://www.fernox.com/files/Fernox/Content/PDF/English/Water%20Test%20Kit.pdf
Sentinals is a bit less technical?
Kamco and Fernox
TESTS FOR:
pH (acidity/alkalinity)
Dissolved iron
Dissolved copper
Chloride level
Total hardness
Inhibitor concentration

ANY specification I HAVE ever written, and thats many, and for system instals to ESTATES, required these test to be carried out, BECAUSE they were evidence that can and would be used for disputes with either manufacturers, OR INSTALLERS who did not do as the spec stated, as to liability for problems:eek:

Myser

Mr_Ted wrote: »

Specifically http://www.fernox.com/files/Fernox/Content/PDF/English/Water Test Kit.pdf

TESTS FOR:
pH (acidity/alkalinity)
Dissolved iron
Dissolved copper
Chloride level
Total hardness
Inhibitor concentration

The OP's problem is determining the concentration of inhibitor in the system - if at all any. If they do not know which product was used and the product sticker wasn't left by the previous company, those tests won't be of any use in determining this.

There is no way one company can know the exact composition of another company's inhibitor or other chemical product for that matter. Hence, both companies state that they will only check for inhibitor for their own products. Look at the datasheet for both the Fernox home and lab tests.

Whether I know about water quality analysis or not is irrelevant as the facts are quite clear about the testing of inhibitor by those companies.

On the link to the information sheet you have provided it states this:

This test kit is supplied with all equipment and reagents required to determine chloride, copper, iron, hardness, pH and Fernox Protector levels. All tests are suitable for use with water containing Fernox corrosion Protectors.

Note they do not say 'All tests are suitable for use with water containing any corrosion protectors'. This means that their reagents have been designed/optimised to work with Fernox products in the water and not those from any other company.

Mr_Ted

;)Thats dabatable as to constituent content as most have similar constituents dependant on the application usage such as what is suitable for copper is not for alloys etc:p

BUT, and this is the big issue for the OP, inhibitor DOES NOT cause gassing, its the other degenerative factors:)

hubb

Now the bottoms of the upstairs rads (after bleeding air out) have gone cold. It's never ending.