Ice Protection

Question 1

What NH is required to operate the wing boot.
What pressure is required for the wing boot?
any protection?

How does the wing boot operate?

Answer 1

80%NH req
@20psi
over pressure protection at 23psi

Inflates with pressure
deflates with vacuum

6 ejector flow valves

Question 2

Wing Boot inflation timing

Engine inlet timing

Propeller De-icing

Answer 2

6sec timing cycle then of for 54sec (1min cycle)

engine
air inlet lip and upper forward region of the bypass duct
simultaneous inflation
6sec on then off for 174sec (3min cycle)

Propeller
Electric elements 
On each blade
Operation timing:
Normal 10sec on, 60 sec off (70sec)
Cold 20sec on, 60sec off (80sec)
Order: 
left blade 1 and 3 
right blade 1and 3 
left blade 2 and 4
right blade 2 and 4