Pilot Flame Characteristics - Empire Comfort Systems VFD26FM(2,3)0(N,W,C)(N,P)-2VFD26FM20NN-2 Installation Instructions And Owner's Manual

INTERMITTENT pILOT
Correct pilot Flame pattern
SENSOR
Incorrect pilot Flame pattern
SENSOR
If pilot flame pattern is incorrect, as shown in Figure 20:
• See Troubleshooting, page 30-31.
Page 24

pILOT FLAME CHARACTERISTICS

IGNITOR
PILOT
Figure 19
IGNITOR
PILOT
Figure 20
Cleaning and pilot Maintenance
Oxygen Depletion Sensor pilot
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.
B A
Millivolt pilot
A
B
Hydraulic Thermostat pilot
B
Intermittant pilot
Never use needles, wires, or similar cylindrical objects to
clean the pilot to avoid damaging the calibrated ruby that
controls the gas flow.
Figure 21
Figure 22
A
Figure 23
WARNING
30816-1-0912