Cabin Heating, Ventilating And Defrosting System - Cessna Grand Caravan 208B G1000 Manual

SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION MODEL 208B G1000
PASSENGER READING LIGHTS (Passenger Version Only)
Passenger reading lights may be installed near each of the aft
passengers positions. The lights are located in 14 small convenience
panels above each seat. A pushbutton-type ON, OFF switch, mounted
in each panel, controls the lights. The lights can be pivoted in their
mounting sockets to provide the most comfortable angle of illumination
for the passenger.
NO SMOKE/SEAT BELT SIGN (Passenger Version Only)
A lighted warning sign may be installed in the airplane to facilitate
warning passengers of impending flight operations necessitating the
fastening of seat belts and/or the extinguishing of all smoking materials.
This installation consists of a small lighted panel mounted in the cabin
headliner immediately aft of the overhead console and two toggle-type
switches, labeled SEAT BELT and NO SMOKE, on the lighting control
panel. When these switches are placed in the ON position, the warning
signs illuminate, displaying the international graphic symbolism for
fasten seat belts and no smoking to the rear cabin passengers. The
circuit for the warning sign lights is protected by a pull-off type circuit
breaker, labeled SEAT BELT SIGN, on the left sidewall switch and
circuit breaker panel.
CABIN HEATING, VENTILATING AND DEFROSTING
SYSTEM
The temperature and volume of airflow to the cabin is regulated by the
cabin heating, ventilating and defrosting system (see Cabin Heating,
Ventilating and Defrosting System figure). In the heating system, hot
compressor outlet air is routed from the engine through a flow control
valve, then through a mixer/muffler where it is mixed with cabin return
air or warm air from the compressor bleed valve (depending on the
setting of the mixing air valve) to obtain the correct air temperature
before the air is routed to the cabin air distribution system. Controls are
provided to direct the heated air to the forward and/or aft portions of the
cabin for heating and to the windshield for defrosting. Ventilating air is
obtained from an inlet on each side at the forward fuselage and through
two ram air inlets, one on each wing at the upper end of the wing struts.
The wing inlet ventilating air is routed through the wing into a plenum
chamber located in the center of the cabin top. The plenum distributes
the ventilating air to individual overhead outlets near each seat
position. Two electric blowers are available for the overhead ventilating
system. Details of this installation are presented in Section 9,
Supplements.
208BPHBUS-00
U.S.
7-84