gas rate on gas fires

[desrob]

the last two gas fires i have serviced i am finding the operating pressure is fine but when i gas rate i am finding them way out,am i missing some thing,

 

[barronbathrooms]

Blockage in injector if gas rate is low?

 

[mfgs]

Some fires state in the MI's what number to put the fire on to do pressure and gas rate, being on the wrong setting will alter what readings you get. Injectors could be another possibility.

 

[desrob]

Some fires state in the MI's what number to put the fire on to do pressure and gas rate, being on the wrong setting will alter what readings you get. Injectors could be another possibility.

followed mi, one setting was on 3 full rate being 4,and got a reading 3.5kw the heat input was 6.5kw....?

 

[Billy Bob Bob]

IT WILL COME DOWN TO WORN JETS/BURNER/GASTAP,if flame picture and other tests ok gas safe will tell you its not to critical if it has a flue

 

[kirkgas]

followed mi, one setting was on 3 full rate being 4,and got a reading 3.5kw the heat input was 6.5kw....?

if inlet/cold(why do they call it that?) pressure is right and gas rate is low, it needs a service/clean out, as the gas supply is there but not getting to the burner, what is the pipe size/route like, could it be that there is in effect a decent "standing pressure" at the appliance but not enough gas getting through the pipe quickly enough to maintain the right HI

 

[desrob]

yeah, i know what your saying,the pipe size/route is not an issue,correct inlet/cold pressure.!you would think wear and tear on appliance parts would increase the flow through it, unless blockage is an issue, from the out let side of gas valve i have correct pressure but from there that pressure is resulting in a poor gas rate ?

 

[kirkgas]

yeah, i know what your saying,the pipe size/route is not an issue,correct inlet/cold pressure.!you would think wear and tear on appliance parts would increase the flow through it, unless blockage is an issue, from the out let side of gas valve i have correct pressure but from there that pressure is resulting in a poor gas rate ?

you have eliminated everything except a blocked injector and/or a blocked burner, strip and clean them and we should be sorted