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www.norcold.com/cda 29N6XX/N8XX ModelsRefrigerator Service Manual
Orifice
The orifice controls the flow of propane gas to the
burner. When replacing the orifice always use the size
orifice specified. Using the wrong size or a damaged
orifice will alter the amount of propane flowing to the
burner.
N62X/N64X units with serial number 886961 and higher
and N82X/N84X units with serial number 889988 and
higher are equipped with an LP16 cap type orifice. All
other units with serial numbers lower than those listed
were originally equipped with an 0.155 jeweled orifice.
See Figure 11.
Burner
The burner, see Figure 12, provides primary air access
and acts as the fuel mixing chamber to support
ignition and the combustion of propane gas. Primary
combustion air flows into the burner through three
circular openings. Any obstruction blocking any of the
three openings will have an effect on the fuel/air
mixture. Insufficient combustion air will cause carbon
deposits to clog the burner slots. Carbon clogged
burner slots along with heavy dirt deposits in the
burner are the main cause of no cooling or poor
cooling performance when the refrigerator is operating
in LP gas mode.
Burner Tube
The burner tube is 1/4 inch OD aluminum tubing with
an anti-vibration loop and a double flare at each end.
See Figure 13.
!
WARNING:
Do not use compressed air to clean a jeweled type
orifice. The air pressure may dislodge the orifice from
the adapter.
!
CAUTION:
Do not install cap style LP16 orifice in a burner that
uses a jeweled type orifice or vise versa. The orifice
adapter's threads are not compatible. Each orifice
must be matched to its burner.
!
WARNING:
Do not separate cap style LP16 orifice from its adapter.
Separating the assemblies breaks the seal and
causes an LP gas leak.
Figure 12. Burner.
Figure 11. 0.155 and LP16 orifice assemblies.
0.155
Cap type LP16 orifice assembly
0.155 Jeweled orifice assembly
L
P
1
6
Figure 13. Burner tube.
Gas valve connection
Burner connection