Owner`s manual

29898-8-1114Page 22
PILOT FLAME CHARACTERISTICS
INTERMITTENT PILOT
CorrectPilotFlamePattern
PILOT
SENSOR
IGNITOR
Figure 17
IncorrectPilotFlamePattern
PILOT
SENSOR
IGNITOR
Figure18
If pilot ame pattern is incorrect, as shown in Figure 18:
• See Troubleshooting, page 27-29.
CleaningandPilotMaintenance
OxygenDepletionSensorPilot
When the pilot has a large yellow tip ame, clean the Oxygen
Depletion Sensor as follows:
1. Clean the ODS pilot by loosening nut B from the pilot tubing.
When this procedure is required, grasp nut A with an open end
wrench.
2. Blow air pressure through the holes indicated by the arrows.
This will blow out foreign materials such as dust, lint and spider
webs. Tighten nut B also by grasping nut A.
A
B
VFP(32,36)BP(30,31)MillivoltPilot
Figure 19
B
A
VFP(32,36)BP(20,21) HydraulicThermostatPilot
Figure 20
AB
VFP(32,36)BP(70,71) IntermittantPilot
Figure 21
Warning:
Neveruseneedles,wires,orsimilarcylindricalobjectsto
cleanthepilottoavoiddamagingthecalibratedrubythat
controlsthegasow.