Form I-RA/D 350/500, P/N 131090R12, Page 39
Location of Components Referenced in Troubleshooting Charts
Size 350
Manually reset
Backow Sensor
Switch is on the
Viewport Door
Transformer
(Open the
transformer to
service cad cell.)
10 amp fuse mounted
on the top of the
electric box. See
wiring diagram.
Ignition
Controller
Green Light: Limits are satised;
heater is ready to operate.
Air pressure
switch is
inside the main
electrical box.
115V Terminal
Connections 1-
10 are inside the
main electrical
box.
Green Indicator
Light (”power
on”)
Manual
Disconnect
Switch
Oil Inlet
Connection
115V Terminal
Connections
11-18 are in
the burner
junction box.
Piston-type Air
Compressor
Box contains oil heat
exchanger (pre-heater) with
650 watt heating element and
temperature controls. Remove
cover to access.
Burner
Motor Reset
Button
Burner
Tee with
Strainer
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