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Sooting or flame too blue - Lennox Elite LDV
What is going on
Long orange flames with black tips and soot on the glass or near the vent cap, or flames that stay blue and see-through.
Likely causes
- Air shutter closed too far (soot)
- Air shutter open too far (blue flame)
- Flames hitting the panels
- Vent run with many offsets
Check in this order
- Safety air shutter adjustment by a qualified tech only. Glass door must be on and sealed. The lever and nearby surfaces are hot.
- Run the burner at least 30 minutes before judging. A new fire starts blue and turns yellow-orange.
- If sooting, first check the flames are not touching the panels and the media is placed right.
- Lever is on the lower right below the door (remove the surround for easier access). Push in = more air (more open). Pull out = less air.
- Sooting or orange flame open the shutter a bit. Flame stays blue: close it a bit. Run a few minutes and check again.
- More offsets in the vent usually need a wider shutter opening. Propane flames that candle or look stringy also need more air.
Applies to: Elite Linear View LDV42N, LDV42P, LDV54N, LDV54P (SIT Proflame DFC control, remote wall receiver)
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Source: Lennox Hearth Elite Linear View Direct-Vent Gas Fireplace LDV42/LDV54 Installation Instructions 506011-02 (06/2012), Adjusting the Air Shutter p.32. Written in our own words; check the manual for your exact model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.