Piper SENECA II - Page 737

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PIPER SENECA II SERVICE MANUAL
COMBUSTION _
AIR MANOMETER
COMBUSTION AIR BLOWER
VENTILATING
AIR
MANOMETER
COMBUSTION AIR
--P----<R ► ESSURE SWITCH\
FUEL IN
(FROM PUMP)
I
-----24" MIN.-----
I
THERMOMETER,,
OVERHEAT (LIMIT)
SWITCH
'--~~----1--+--i,c;==::::;.1--------,---/-----i--"----I t
EXHAUST OUTLET/ 2.25" DIA. ORIFICE
DUCT
DUCT SWITCH
12V DC
Figure 13-22. Suggested Setup of Heater Operation Test
,------ - -------
,.. ___________ _
t2VDC
+
OVERRIDE
SWITCH
(OPTIONAL)
I
I
ADJUSTABLE L - ....J
DUCT SWITCH
RADIO
NOISE
FILTER
FUEL PUMP
1 VENT
I BLOWER
I
I
r-1..1
L I J
T
I
I
I
I
I
I
I
OVER TEMP.
SWITCH
R NF
RADIO NOISE
FILTER
COMBUSTION -
BLOWER
FUEL
VALVE
IGNITION
UNIT
EXTERNAL WIRING
~----------
- --- --L- _ HEATER UNIT ______ _
REQUIRED FOR BENCH TEST
Figure 13-23. Wiring Connections for Heater Operation Test
Reissued: 10/11/79
HEATING AND VENTILATING
2L6