Temperature Selector Knob; Cabin Heating, Ventilating And Defrosting System (Cargo Version) - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

CESSNA
MODEL 208B 867 SHP
GARMIN G1000
CABIN HEATING, VENTILATING AND DEFROSTING
SYSTEM
(Continued)

TEMPERATURE SELECTOR KNOB

A rotary temperature selector knob, labeled TEMP Control Knob, is
located on the CABIN HEAT switch and control panel. The selector
modulates the opening and closing action of the flow control valve to
control the amount and temperature of air flowing into the cabin.
Clockwise rotation of the TEMP Control Knob increases the mass flow
and temperature of the air.
•
If more cabin heat is needed while on the ground, move
the FUEL CONDITION lever to HIGH IDLE and/or select
the GRD position (pulled out) of the MIXING AIR control.
•
Some hysteresis may be encountered when adjusting
bleed air temperature. The resulting amount and
temperature of bleed air may be different when
approaching a particular temperature selector knob
position from a clockwise versus a counterclockwise
direction. Best results can usually be obtained by turning
the temperature selector knob full clockwise and then
slowly turning it counterclockwise to decrease bleed
airflow to the desired amount.
A temperature sensor, located in the outlet duct from the mixer/muffler
operates in conjunction with the TEMP control knob. In the event of a
high temperature condition (overheat) in the outlet duct, the
temperature sensor will be energized, closing the flow control valve and
thus shutting off the source of hot bleed air from the engine.
208BPHCUS-00
AIRPLANE AND SYSTEMS DESCRIPTION
NOTE
SECTION 7
7-107
U.S.