SA 160
AIRCRAFTA I R C R A F T
Symphony
AIRCRAFT
7.37 VENTILATION AND HEATING
To supply fresh air into the cabin, two adjustable air nozzles are
provided. They are located on the forward left and right cabin sidewall
areasjustbelowtheinstrumentpanel.
Ram air is provided to the air nozzles using air intake located on each side
of the fuselage. The amount of fresh air can be adjusted by pivot tabs
insidethenozzles.
The heating system is used to supply heated air to the cabin and to the
windshield.
Ram air flows through a shroud attached to the exhaust and a duct to the
heat valve. The heat valve is located on the firewall in the engine
compartment. Using this valve, the amount of heated air can be
regulated. The valve is actuated by a control “CABIN HEAT“, located on
thecenterpedestalbelowtheinstrumentpanel,viaa‚Bowdencable.
If the “CABIN HEAT” knob in the full forward position the heat relief
valve is closed and heated air cannot enters the cabin. If the knob is
pulled out, the heat relief valve opens. Additional heat is available by
pulling the knob out further. Maximum heat is available with the cabin
heatknobinthemostrearposition.
Via the heat valve the hot air travels through to the heated air distributor
box. This box is located in the cabin at the firewall. By the heated air
distributor, the amount of heated air which should reach to the area of
the pilot's and co-pilot's feet and to the windshield can be adjusted. A
door inside the heated air distributor is operated by the control
“WINDSHIELD / CABIN” via a Bowden cable. The control knob is
locatedjust below the “CABINHEAT” controlonthe center pedestal. For
maximumeffect,thefreshairnozzlesshouldbeclosed.
SECTION 7
DESCR. & OPERATION
7-47
Feb 25, 2005
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