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121486-01F
23
2. Shut off unit, including the pilot. Allow the
unit to cool for at least thirty minutes.
3. Inspect burner, pilot, and primary air inlet
holes on injector holder for dust and dirt
(see Figures 40 and 41).
4. Blow air through the ports/slots and holes
in the burner.
5. Check injector holder located at the end of
the burner tube again. Remove any large
particles of dust, dirt, lint, or pet hair with
a soft cloth or vacuum cleaner nozzle.
6. Blow air into the primary air holes on the
injector holder.
7. In case any large clumps of dust have now
been pushed into the burner repeat steps
3 and 4.
8. Replace front log and control cover log
(see
Installing Logs
, page 16).
Clean the pilot assembly also. A yellow tip
on the pilot flame indicates dust and dirt in
the pilot assembly. There is a small pilot air
inlet hole about 2" from where the pilot flame
comes out of the pilot assembly (see Figure
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/Slots
Burner
Tube
Injector Holder
(May Be Brass
or Aluminum
Depending on
Model)
Primary Air Inlet Holes
(Shape of Holes May
Vary by Model)
Figure 40 - Injector Holder On Outlet
Burner Tube
Figure 41 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to
In-
stalling Logs,
page 16, to properly replace
logs.
• Replace log(s) if broken or chipped (dime-
sized or larger).
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame
holes should be open with yellow flame pres-
ent. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked by
debris or rust, with no flame present. If so,
turn off heater and let cool. Remove blockage.
Blocked burner flame holes will create soot.
CLEANING AND MAINTENANCE
Continued
41). With unit off, lightly blow air through the
air inlet hole. You may blow through a drinking
straw if compressed air is not available.
SPECIFICATIONS
LDL3930NRB
• Rating (Variable): 26,000/39,000 Btu/hr
• Type Gas: Natural
• Ignition: Piezo
• Manifold Pressure: 3.5" W.C.
• Inlet Gas Pressure (in. of water)
Maximum 10.5" W.C., Minimum* 5" W.C.
LDL3930PRB
• Rating (Variable): 26,000/39,000 Btu/hr
• Type Gas: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8" W.C.
• Inlet Gas Pressure (in. of water)
Maximum 14" W.C., Minimum* 11" W.C.
* For purpose of input adjustment
