Room CO test

[mfgs]

I have got to go back to a job tomorrow where the customer has been complaining of headaches and yellow flames on the hob, transco been out today and issued a concerned for safety of the appliance label and turned it off. I had a quick look earlier and the flame picture was fine, 20mb working pressure and ventillation all ok. I left it turned off until I could do a proper room CO test.

I have never done a proper room CO test before but I want to do one for my own peace of mind and also the clients as they are very worried. I am sure someone posted up the correct procedure before but I couldnt find it with a quick search. Any advice would be much appreciated.

 

[Billy Bob Bob]

look here and have a read of this basically the fga will time the test anything above 10ppm must be investigated might be a good idea to take a co alarm with you for your own safety

 

[mfgs]

There is a room sealed boiler in the room aswell, should both appliances be run at the same time or do a seperate test for each? Also there is one of those heat recovery extractors which also suck air in, should this be on when doing the test just on the off chance that it could have been sucking in any POC from the boiler? The flue is about 1.5m away from the fan.

 

[Billy Bob Bob]

i would test each separately then all together,see what results you get,if at anytime the co/ppm reach high levels abandon the test,remember your own safety

 

[southcoastboile]

I find that my flue annalyser doesn't give that acurate a reading (anton v2) I had it on co room test the other day over a hob burner for about a min and it didn't even pick up any co.

Since finding that I have pushed the customer to get a co alarm fitted. Fitted 3 since then.

Does anyone else find the co room test any good?

 

[mfgs]

Cheers gasman. I'm sure there is a British Standard specific to room CO tests and if I remember correctly with a hob you need a couple of saucepans on the burners or something like that?? Also im sure there is a specific height which the probe should be at the measure the CO, I think its 2m but not entirely sure. I remember someone putting the exact criteria in a thread a while back, I just cant find it.

 

[Mike Jackson]

Bs 7967

 

[mfgs]

Cheers Mike. I managed to find it in the end. Went along earlier and it was all fine, peaked at 6ppm. No idea what caused the yellow flames the customer was seeing as I couldnt see anything wrong with the flame picture on either visit, I can only assume something spilled over when cooking. They now have a CO detector aswell.