Kramer
Come on,you really think it would show a few kilos ,if that,of fuel needed int he MEL,really?
...from the AMM:
The purpose of the right recirculation fan is to recirculate the conditioned air from the collector shroud. This will reduce the requirement for bleed air taken from the engines for air conditioning to the passenger cabin.
Less bleed required,less? Think what you want of it.....
AMM:
S AUTO
With both packs operating in AUTO, each pack regulates to normal flow rate approximately 55 Ibs/min. This is the normal in-flight schedule. It provides optimum airplane performance, but requires a recirculation fan to meet de- sired cabin ventilation rate. As cabin altitude increases, the pack valve is biased to supply a lower airflow rate.
Now if you fly the Ng..i suggest you read your QRH slowly again....until you get to the recirc fan part.