Flow sensors ideal logic heat only

[shaky]

Hi all how do some of you test flow sensors on an ideal logic Plus heat only boiler?

Some boilers just 2 wire but the logic has a 3 wire sensor

Thanks,

 

[shaky]

Hi all how do some of you test flow sensors on an ideal logic Plus heat only boiler?

Some boilers just 2 wire but the logic has a 3 wire sensor

Thanks,

Anyone

 

[ShaunCorbs]

dont have a clue sorry

 

[Gasmk1]

Could it be like and air pressure switch it switches from no flow to flow