HEATING
A. Description and Operation
— CAUTION
When cabin heat is operated, heat duct surface becomes hot.
This could result in burns if arms or legs are placed too close
to heat duct outlets or surface.
Fresh air is ducted from the left engine baffle to the heater muff which is attached to the muffler. The
heated air is then ducted to the valve box mounted on the fire wall. When the valve is open, heated air
enters the heat ducts located along each side of the center console. Outlets in the heat ducts are located
at each seat location. Airflow to the rear seats can be regulated by controls in the heat ducts located
between the front seats. The temperature of the cabin is regulated by the heater control located on the
right side of the instrument panel.
Defrosting is accomplished by heat outlets located on the right and left side of the cowl cover. Heated
air is ducted directly from the heater valve box to the defroster shut-off valves at the fire wall and then
to the defroster outlets. The airflow is regulated by a defroster control located below the heat control.
To aid air distribution, the cabin air is exhausted overboard by an outlet located on the bottom of the
fuselage. Cabin exhaust outlets are located below and aft of the rear seats.
B. Heater Maintenance
If the exhaust manifold should become defective, carbon monoxide fumes may be discharged into the
cabin area. Therefore it is imperative that the exhaust manifold be inspected regularly. Refer to
Chapter 78 for inspection of exhaust systems. The heater muff must be removed in order to inspect the
manifold assembly. Check the operation of the push-pull controls to insure the valve doors function
properly. When the controls are pulled out, the door should be completely open to permit full airflow.
When the controls are pushed in, the valves should close off all air passage and vent the air into the
engine compartment. Refer to Figure 21-1 or 21-2 for an illustration of the heater system.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
21-40-00
Page 21-3
Reissued: July 1, 1993
1H10
Summary of Contents for PA-32R-301T SARATOGA S
Page 26: ...CHAPTER 4 AIRWORTHINESS LIMITATIONS 1C1 ...
Page 29: ...CHAPTER 5 TIME LIMITS MAINTENANCE CHECKS 1C4 ...
Page 53: ...CHAPTER 6 DIMENSIONS AND AREAS 1D6 ...
Page 64: ...CHAPTER 7 LIFTING AND SHORING 1D21 ...
Page 68: ...CHAPTER 8 LEVELING AND WEIGHING 1E1 ...
Page 72: ...CHAPTER 9 TOWING AND TAXIING 1E5 ...
Page 76: ...CHAPTER 10 PARKING AND MOORING 1E9 ...
Page 80: ...CHAPTER 11 REQUIRED PLACARDS 1E13 ...
Page 92: ...CHAPTER 12 SERVICING 1F1 ...
Page 126: ...CHAPTER 20 STANDARD PRACTICES AIRFRAME 1G17 ...
Page 127: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 139: ...CHAPTER 21 ENVIRONMENTAL SYSTEMS 1H5 ...
Page 188: ...CHAPTER 22 AUTOFLIGHT 1J7 ...
Page 193: ...CHAPTER 23 COMMUNICATIONS 1J12 ...
Page 203: ...CHAPTER 24 ELECTRICAL POWER 1J22 ...
Page 263: ...CHAPTER 25 EQUIPMENT FURNISHINGS 2A13 ...
Page 269: ...CHAPTER 27 FLIGHT CONTROLS 2A20 ...
Page 332: ...CHAPTER 28 FUEL 2D11 ...
Page 363: ...CHAPTER 29 HYDRAULIC POWER 2E18 ...
Page 404: ...CHAPTER 30 ICE AND RAIN PROTECTION 2G16 ...
Page 470: ...CHAPTER 32 LANDING GEAR 3A13 ...
Page 550: ...CHAPTER 33 LIGHTS 3D24 ...
Page 562: ...CHAPTER 34 NAVIGATION AND PITOT STATIC 3E12 ...
Page 582: ...CHAPTER 35 OXYGEN 3F8 ...
Page 604: ...CHAPTER 37 VACUUM 3G6 ...
Page 616: ...CHAPTER 39 3G18 ELECTRIC ELECTRONIC PANELS MULTIPURPOSE PARTS ...
Page 620: ...CHAPTER 51 STRUCTURES 3G22 ...
Page 636: ...CHAPTER 52 DOORS 3H14 ...
Page 650: ...CHAPTER 55 STABILIZERS 3I4 ...
Page 662: ...CHAPTER 56 WINDOWS 3I16 ...
Page 670: ...CHAPTER 57 WINGS 3I24 ...
Page 688: ...CHAPTER 61 PROPELLER 3J18 ...
Page 704: ...CHAPTER 70 STANDARD PRACTICES ENGINES 3K10 ...
Page 708: ...CHAPTER 71 POWER PLANT 3K14 ...
Page 737: ...CHAPTER 73 ENGINE FUEL SYSTEM 4A13 ...
Page 749: ...CHAPTER 74 IGNITION 4B1 ...
Page 783: ...CHAPTER 77 ENGINE INDICATING 4C11 ...
Page 793: ...CHAPTER 78 EXHAUST 4C21 ...
Page 801: ...CHAPTER 79 OIL 4D5 ...
Page 805: ...CHAPTER 80 STARTING 4D9 ...
Page 819: ...CHAPTER 81 TURBINES 4D23 ...
Page 833: ...CHAPTER 91 CHARTS WIRING DIAGRAMS 4E13 ...