Am i stupid to buy an anylyser

[croydoncorgi]

The reason condensers usually need an analyser for accurate setup is because many have premix burners (fan blows gas / air mix into burner). Burner pressure as such doesn't mean much . The fan speed changes, which affects the BP as measured on the gas valve.

 

[corgiman]

you can set up a gas condenser without a fga,a much more reliable method is available does not require calibration and is more accurate only problem with it is you cannot get a printout to verify your findings.fgas at the moment have a built in tolerance erring on the side of caution so efficiency readings can be a tad optimistic,plus they are a bit temperamental to the rigours of life in a plumbers van.

Far be it from me to disagree bripl but WB Ideal Potterton etc demand a FGA for commission and service

so how do you get round that etc

in fact you have to record CO2 readings on the benchmark cert????

if there is a way of doing that without an analyser let me know and i will tell bossman and he will ebay his

 

[bster]

Is premix what i call forced draught - or are they two different things.

I now you can get forced draught boilers that dont premix - so i'm pressuming that you use 'forced draught' to describe these and premixed forced draught is simply 'premixed'

I think i may have answered my own question here!
Just need all you tutors to confirm

cheers

 

[bripl]

it is called a wet kit,most oil service engineers use them on boilers but they can be used on gas far more accurate than a fga if done properly,we carried out a comparison at work with two fgas and a wet kit the results from the electronic kits varied by 15 percent,the wet kit was on the button,so have a look for one around 300quid,

 

[ChrisR]

Wet kit? Neverrerdofit. Who makes those?

 

[scatmanjohn]

i googled wet kit and got this

http://www.gaycondoms.com/wetinarmakit.html

 

[scatmanjohn]

Traditionally, oil burner technicians have used manual combustion efficiency test equipment (or wet kit) for field service. These kits generally consist of a stack thermometer, draft gauge, wet chemical CO2 tester, slide rule and smoke pump. Although this equipment has served the industry well over the years, the need for faster, more accurate, real time flue gas analysis has become evident.

I don't think we will all be throwing out the FGA's just yet

 

[bripl]

the point of the post was to show an alternative way of doing it without a expensive piece of kit that needs a service every 12/18 months plus annual calibration cert do the maths 300plus for a wet kit or 6oo plus for fga printer plus ongoing maintenance costs and calibration both do the same job except one is more accurate and reliable.for those intrested go to
www.bacharach-training.com
then go to fyrite wet kit where your questions may be answered.

 

[scatmanjohn]

I take it you use a wet kit then.

There is nothing that says that you must have a printout of your test results as far as i am aware.

 

[bripl]

the beauty of a print out is it shows exactly how you left the boiler,i have both a wet kit and fga but my preference is the wet kit for setting up boilers.

 

[Agile]

My father used a slide rule but when I went to school they had Log Tables in a light blue/grey cover. Does anyone else remember them?

Now I presume they just use a calculator!

Tony

 

[ChrisR]

Sure, They always had useful information in the back, like "Broken Welsh coal averages 1 ton to 40 cubic ft".