CAE SimuFlite Citation Bravo, Pilot Training Manual

Page: 669 / 718

Pneumatic Systems
Citation Bravo
Developed for Training Purposes
5K-15
September 2005
The temperature sensor on the right
side of the aft cabin divider detects
the temperature of cabin ambient air
and varies the automatic control sys-
tem accordingly. A fan in the sensor
draws cabin air across the tempera-
ture sensing unit any time the temp
control is in Auto Temp mode.
The automatic temperature control
balances the selected input with the
duct temperature sensor and cabin
temperature sensor inputs to control
ACM output. The temperature con-
trol range is 65°F to 85°F.
Air Distribution
The air distribution system directs
and controls the flow of hot, cold,
and/or fresh air through the cabin
and cockpit (refer to Bleed Air/Air
Conditioning schematic).
The ACM supplies the conditioned
air. Fresh (unconditioned) air enters
the system from the ram air ducting
in the tailcone during unpressurized
operation (see the Fresh Air section).
As temperature increases above
100°F, the thermoswitch signals a
motor-operated damper valve to
block air from the duct and open an
air port beneath the cabin floor. Cabin
air is drawn from under the cabin
floor area into the overhead air duct.
Overhead Air Blower
The OVHD fan switch on the tilt
panel controls the overhead air
blower that increases airflow through
overhead outlets (WEMAC). The
switch consists of HI/OFF/LOW
positions. When operating, the
blower draws air from the ACM main
distribution duct if the temperature is
below 100°F or from the under-floor
area when temperature in the duct is
above 100°F.
Flow Divider
The flow divider in the under-floor
ducting provides adjustable volumes
of conditioned air to the cabin above-
floor air distribution and the cockpit
underfloor air distribution. The AIR
FLOW DISTR
switch in the cockpit
has five detents to control the flow
divider. Each detente selection
increases or decreases the amount of
air flow into the cockpit or cabin
depending on switch position. Nor-
mally, because of the "greenhouse"
effect of the windows, the crew posi-
tions the switch one detente left of
center to allow the cockpit to receive
the larger volume of air.
Ventilation Outlets
A control lever on either side of the
cockpit controls the footwarmer out-
let valve. The lever also controls the
respective side window defog valve.
The defog valve directs maximum air
flow to side windows for defogging
with the footwarmers closed and traps
conditioned air between the panes
when the footwarmers are opened.
The passenger footwarmer mani-
folds are along the outboard cabin
walls at floor level. The flow divider
directs conditioned air to the foot-
warmers through the above-floor air
distribution ducting.
Conditioned air from the under-floor
air distribution system supplies the
foot warmers just forward of the
main entrance door.
The passenger armrest warmer mani-
folds are along the outboard cabin
walls. Air holes under the armrests
receive conditioned air from the
same source as the footwarmers.