5.7 Fitting the flue gas temperature sensor
❒ Insert the flue gas temperature sensor completely into the brass bushing on the
lower flue pipe connection and secure with a wing screw
❒ Run the flue gas temperature sensor cable to the boiler controller and connect it
according to the enclosed wiring diagram,
⇨ See "Electrical connection" [page
Assembly
5
Fitting the flue gas temperature sensor
Installation and Operating Instructions EF 250-500 | M2140120_en
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