Can anyone tell me is there any point to the flue air pressure switch on the worcester bosch greenstar 24i junior/28i junior. Seems pointless, do they even put them in there boilers anymore?
If using a zero pressure governor APS is not required .............speed of combustion fan is directly proportional to variable gas rates , hence no APS required. (forced draught)
This is the working priciple of most boilers now. (condensing)
I remember a long timne ago being told by Keston Tech Dept on the phone to remove the APS form a Celcius boiler and link out the wiring, I told them that untill they put that in writing, I would not do it!
(I never did recieve written instruction to do this!)
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