johnson starley

[gaspastemania]

Came across a johnson starley reno 30 today where the combustion ratio was ,0008 so thought i would bring the ratio down but could not locate the throttle on gas valve . Read the MI's and said ,0008 is acceptable and i know that anyway but thought i would tweek it . But how do you bring the ratio down on these boilers ?? From what i can see and read in MI's it mentions nothing of how to reduce the ratio .

 

[diamondgas]

Have you got a decimal point in the right place? 0.0008 is an excelent reading! Is this a new w/air?

 

[gaspastemania]

Sorry think its is wrong ,008 if i recall it was a combi .

 

[diamondgas]

Johnson starley doing combi's ... weyabuggaman! lol

I'd be dubvious of 008! CO must be prety high! I'd be checkin for something amiss here! flue seals, condensate blocked that sort of thing .. must google J/S boilers though! sheeeeesh!!

 

[gaspastemania]

So you dont know where the throttle is on them?

 

[diamondgas]

Just checked the mi's as I didn't even know J&S had got into wet C/H!

Now just checking out your post! The gas valve should be a zero compensating yeh? so you need to check that it's doing as it say's on the tin! No thottle! Any "throttle" will be on the air intake Id assume!

 

[gaspastemania]

Been doing combi's for a while from what i gather ,
Thats what i'm finding servicing come across so many different models and suddenly one thing throws me !!!

 

[diamondgas]

Been doing combi's for a while from what i gather ,
Thats what i'm finding servicing come across so many different models and suddenly one thing throws me !!!

Been doing them since they first hit the market ... Always learning 'gaspaste...' Sit back and remember the basics! If you're getting a high ratio then something is compromising the combustion process .. over gassed, under aired, primary or secondary aeration! Once you grasp that you then can examine the process! Take a deep intake ...... and know you can get to the reason!

 

[GrahamM]

Not seen the boiler before, but as per MI's gas valve is factory set, not adjustable. So you need to go back to basics as per diamondgas. Full strip service. Clean H/E, burner, condensate etc.