Hi max
in the beech there's 3 elec systems- 2 generators and a battery.common scenario in the sim is a gen failure followed some time later by a fault on other side,say a fire.if you shut it done immediately you've created a dual gen failure!so now you've batt power-ie it's limited.
on the copilots subpanel the white circle around the bleed valve signifies that bleed will still have elec power,but not for terribly long as the batt will drain.say 30 mins approx.
so to answer you Q.yes the bleed will work,but for a limited time.
also note on the start sequence.see the redlight items.before start the "envir fail" annunciator will remain illuminated until one of the gens comes online.just another way of looking at it....
on the bleeds.-one bleed needed for air conditioning.the VCM is not unlike those wall unit airconditioners found in hotel rooms.it needs room air to work-takes it in the bottom and forced to cool and exhausted out the top.so to get any air into the cabin we need air(envir) thru the bleed valves and this air is then give to the a/c unit the VCM to get cooled further,if needed.
there are 3 ways to turn the vcm on, all using the mode controller.
1 turn the controller to man cool-easy
2 turn it to manual and bring the manual switch to its coolest position
3 turn it to auto and turn the auto knob all the way down and vcm will turn on if oat > 45f(might be 55,cannot remember)
hope this helps,mtnflyer