Empire Comfort Systems VFP20IN3 series Owner's Manual page 34

INTERMITTANT PILOT
Correct Pilot Flame Pattern
SENSOR
Incorrect Pilot Flame Pattern
SENSOR
If pilot flame pattern is incorrect, as shown in Figure 33.
• See Troubleshooting, page 39.
Page 34
PILOT FLAME CHARACTERISTICS
IGNITOR
PILOT
Figure 32
IGNITOR
PILOT
Figure 33
Cleaning and Pilot Maintenance
Oxygen Depletion Sensor Pilot (Figures 34, 35 and 36)
When the pilot has a large yellow tip flame, 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.
Millivolt Pilot
A
B
Hydraulic Thermostat Pilot
B
Intermittant Pilot
Warning:
Never use needles, wires, or similar cylindrical objects to
clean the pilot to avoid damaging the calibrated ruby that
controls the gas flow.
Figure 34
Figure 35
A
Figure 36
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