Empire Comfort Systems pmn manual Pilot Flame Characteristics, Main Burner Flame Characteristics

PILOT FLAME CHARACTERISTICS

Figure 16 shows a correct pilot flame pattern. The correct flame will be blue and will extend beyond the thermopile. The flame will surround the thermopile just below the tip. A slight yellow flame may occur where the pilot flame and main burner flame meet. Figure 17 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermopile. This will cause the thermopile to cool. When the thermopile cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 17

•See Troubleshooting, page 21.

Correct Pilot Flame Pattern	Incorrect Pilot Flame Pattern
Figure 16	Figure 17

MAIN BURNER FLAME CHARACTERISTICS

Figure 18 shows a correct main burner flame pattern. Figure 19 shows an incorrect main burner flame pattern.

Air Shutter Adjustment

An air shutter adjusting screw is located on the exterior, bottom of the inner body. Screw air shutter adjusting screw IN to close air shutter top (increase yellow flame). Screw air shutter adjusting screw OUT to open air shutter top (decrease yellow flame).

If main burner flame pattern is incorrect, as shown in Figure 19

•See Troubleshooting, page 21.

Cleaning and Maintenance / Main Burner Warning: Turn off heater and let cool before cleaning

After use, cleaning of the main burner may be required for the proper flame. The main burner may be cleaned by applying air pressure to the ports on the main burner.

Cleaning the Log Set and Firebox

During the annual inspection and maintenance appointment, the service person should clean dust, lint, and any light accumulation

from the logs and the firebox area. An extra-soft brush should be used on the logs as they are extremely fragile; a vacuum cleaner may be used on the firebox. If at any time the logs cannot be removed or installed without forcing, the cause must be found. The logs must never be forced.

CAUTION: The ceramic logs are durable when handled and installed properly. However, they are delicate and may be damaged easily if not handled with care. Handling damage to the ceramic logs is not covered by warranty.

DO NOT HANDLE LOGS WHILE THEY ARE HOT. ALLOW PLENTY OF TIME FOR THE APPLIANCE TO COOL COMPLETELY BEFORE HANDLING.

PLEASE NOTE

It is normal for appliances fabricated of steel to give off some expansion and/orcontraction noised during the start up or cool down cycle. Similar noises are found with your furnace heat exchanger or car engine.

Correct Main Burner Flame	Incorrect Main Burner Flame
Figure 18	Figure 19

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