14th stage bleed system - engine cowlings open the wing anti ice?

[jantorre]

Hello and congrats on an fantastic addon, so far one failed apu and 2 aborted takeoffs due to ice and a risk willing pilot  

Messing about with the system visualizations and love them. 
I have a question, might be a bug or that I don't know the logic so please excuse me if its supposed to be like that, anyway:
(My question is the last screenshot)

14th stage bleed system.
Anti-ice not on and anti-ice valves are closed.

 

Wing anti-ice normal, valves to wing open:

Right cowling, right cowl valve open:

Left cowling anti ice on, valve open:

 

And finally what makes me confused:
When both engine cowling anti-ice are on, the valves to the wing opens even when selected off; is this correct behavior?

 

Anyway, had to ask as I try to understand the bleed system  

Regards,

JT

 

[Graeme_77]

Yes indeed, that's the correct behaviour. Thanks for using the study menus to explore the Challenger 650, that's exactly what the developers hoped would happen!

Challengers have a system called Supplemental Ground Wing Anti-Ice System. This was originally an option on the 605, standard equipment on the 650 and a possible retrofit for the 604. The system was made standard equipment after some suspected ice related incidents on the Challenger series.

On the ground only, the use of cowl anti ice on both engines will feed bleed air to the wing system at a low temperature in order increase the ice protection on the wing. The system is disabled when takeoff power is applied and in flight, then the normal wing anti-ice system is the only way to open the wing anti-ice valves.

This system is tested during the long 2 minute test in the after start checklist, but in normal operation the system is fully automatic. 

[jantorre]

Fantastic, love this. Thanks for the added wisdom !
I'll have a look at the schematics when adding power on the next sector  

Regards,
JT