Components; Solenoid Gas Valve & Connections; Orifice; Burner & Burner Tube - Norcold N109X Series Service Manual

Components

When working on the refrigerator LP gas system:
n
Do not alter or modify the burner tube anti-
vibration loop.
n
Do not cross thread fittings. Exercise extreme
care when connecting and disconnecting fittings.
n
Leak test all of the refrigerator propane gas
system fittings after service, replacement, or repair.
Solenoid Gas Valve
The electronic controls energize the solenoid gas valve.
The valve also has a manual shut-off and a capped
pressure test port. The valve's manual shut-off is a
spring-loaded, quarter turn manually operated valve.
See Figure 16.
To manually shut off gas to the burner, pull the handle
slightly away from the body of the valve, then turn it one-
quarter, turn (90 degrees) counterclockwise.
Solenoid Gas Valve Connections
The solenoid gas valve inlet fitting is 3/8 inch, with male
threads; the outlet fitting is 1/4 inch, with male threads.
Do not separate cap style LP16 orifice from its
adapter. Separating the assembly breaks the seal
and will cause LP gas to leak.

Orifice

The N109X burner is uses an LP16 cap style orifice.
See Figure 17. The orifice measures the correct amount
of gas that flows to the burner. Installing a smaller,
larger, or damaged orifice will affect the heat input to the
cooling unit.
burner
The 5-slot burner, shown in Figure 17, has three primary
combustion air intake ports. Primary combustion air
flows into the burner through the air intake holes to
support initial gas ignition. Blocking any of the three
intake openings will affect the combustion of gas. A dirty
burner is the main cause of poor cooling performance in
LP gas mode\operation.
burner tube
The burner tube is 1/4 inch OD aluminum tubing with
an anti-vibration loop. Each end of the tube is a double
flare. See Figure 18.
24
N109X Models
WARNING :
WARNING
12 volt DC power connections
Gas outlet
fitting
Gas pressure
test port
figure 16. Solenoid gas valve
Retaining screw
LP16 orifice assembly
Figure 17. Burner and orifice assemblies.
Gas valve connection
figure 18. burner tube
Mounting bracket
Solenoid
Gas inlet fitting
(from RV LP gas)
system)
Manual shut-off
(shown closed)
5-slot burner
Primary air intake openings (3)
Burner connection
Refrigerator Service Manual