Eurocopter AS 350 83 Flight Manual page 271

COMPLEMENTARY FLIGHT MANUAL
2 HEATING" AND DEMISTING SYSTEM .
These systems provide cabin heating and windscreen demisting.
Heating and demisting are achieved by mixing (hot) P2 air from the engine
with air drawn from under the floor,
The air mixture is circulated through two separate circuits to the heating
outlets provided under the front seats and to the demisting manifolds at
the front. Two manually operated valves mounted on the P2 lines are used
to open and control air distribution.
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Item DESCRIPTION Item DESCRIPTION
1 Demisting air diffusers 4 P2 air ducts
2 Demisting control valve 5 Heating diffusers
3 Heating control valve
* Optional
35D 83 7. 11 .
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