Piper Navajo Chieftain PA-31-350 Service Manual page 779

1 HEATER INSTALLATION
2 HEATER AIR DISTRIBUTION BOX
3 DEFROSTER AIR OUTLET
4 HEATER EXHAUST TUBE PLATE
5. HEAT DUCT. FWD
6 HEAT DUCT. AFT
7 DUCT SWITCH
8 AIR DUCT VALVE
9 AIR DUCT CONTROL
10 HEATER INLET VALVE CONTROL
11 DEFROSTER AIR CONTROL
12. COCKPIT HEAT CONTROL
NAVAJO CHIEFTAIN SERVICE MANUAL
3259
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7
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Figure 13-1. Heating and Ventilating System (cont.)
(Aircraft S N's: 31-8052131 and up. and aircraft having
Heater Air Valve Relocation Kit 764 0005 installed)
Added: 10/15/82
HEATING AND VENTILATING SYSTEM
4B11