Burner Assembly Drawing
This is a drawing of a typical Norcold burner assembly, see image below for location of orifice.
This drawing identifies the burner orifice (sometimes called the burner jet) & the burner.
Before cleaning the orifice, please see the companion page
Gas Valve | Gas Valve Filter | VIDEO
ORIFICE CLEANING & INSPECTION
To clean the orifice or burner jet, remove the orifice from the assembly and soak in
90% isopropyl alcohol.
It is best to
look through the orifice, into the light, before cleaning so one can see the before and after results of
cleaning. The orifice can be
gently blown out after soaking, if any obstructions are seen,
continue the soaking and blowing routine.
CAUTION: Never use high pressure compressed air to blow out the orifice, only gentle blowing of the burner jet is allowed.
If a new
orifice is needed, there are numbers stamped on the
orifice,
typically these are the Norcold orifice part numbers:
N6xx & 8xx series: LP16
N7v, N7x, N7lx, N8v, N8x, N8lx, N10xx: LP18(non replaceable)
1200 & 1210 series: LP18
2118: series: LP22
Any time the propane piping or system is opened, perform a bubble test to confirm that there are no leaks,
or do the
NFPA 1192 Standard on Recreational Vehicles 2021,
section 5.3.20.6 Pressure Drop Test.