high analyser readings on greenstar

[mutley racers]

Went to do a service today on above boiler. Ration was 0.0021 and ppm was 222. Co2 was at 10.3 which is within the limits stated. This is AR then hey?

It also had a burst expansion vessel and is under warranty so turned boiler off and told them to call Manufacturers in to fix.

 

[mutley racers]

Oh and the fan pressure is fine.

 

[Jimbob]

Any different with case on or off?

 

[mutley racers]

No no difference

 

[Ermintrude]

Why at risk? Were all other limits ok?

 

[mutley racers]

Why at risk? Were all other limits ok?

Yes, all other limits were ok. I thought i was told if ratio is out (not according to mi's)it was at risk?

 

[Jimbob]

I think action level is 0.008

 

[tamz]

Yes, all other limits were ok. I thought i was told if ratio is out (not according to mi's)it was at risk?

If it is out adjust it back in. It is quicker than writing out a bit paper. They drift out a bit over time.
10.3 is ok on a greenstar (9.8 + or - 0.5).

 

[Ermintrude]

Wow u actually pay attention to the numbers I just bang it in sample port, if the 300 ppm warning don't go off I'm back on silver and off to my next 59.99 service.

 

[AWheating]

the co2 is what you want to watch on WB's tbh.

the manufacturer's engineer will probably test gas pressures and fga readings when he/she attends anyway.

 

[Kev the gas]

Greenstar, on service mode low 9.2 High 9.8 +/-2 %

max co 200ppm, a little adjustment normally reqd after a couple of years.

In the past, silly readings have been faulty meter governor.

 

[ambrosia]

did you put it on engineers mode and gas rate it
also whats the flue like

 

[gassafe]

Tweak the co2 down to 9.8 and the ppm will drop accordingly I bet...

 

[arran197]

Normally just a bit of adjustment is needed. I'd have adjusted it from that reading.

 

[pipefitter]

Same ..I would have adjusted high & low which probably would have brought ppm down

 

[Reg Man]

Check the fan pressure through the boiler, that will tell you if its clagged up and causing poor combustion.

 

[mutley racers]

Thanks chaps. Next time I will adjust the valve to getter better readings. To be honest, I would have called WB up but as they were coming out the next morning due to burst expansion vessel I thought I would let them do it. Whe I was on the baxi course I learnt that if a vessel has burst and you cannot get hokd of obe, then just empty half a rad with lock shields on until you can come back. Do you guys do this? Or just tell custard not to use it

 

[glenno1]

Ye that would substitute for the vessel, ive done it a few times

 

[arran197]

Ye, drain a rad and open 1 of the valves, then make sure you don't vent the air out and render your work useless.

 

[zeebeedee]

I always set the co2 to 9.4 on these I find the co levels are the lowest at that level