Ventilation Requirements; Propane Gas Components; Examine The Gas Supply System For Leaks - Norcold N300 Service Manual

Ventilation Requirements

WARNING:
The completed installation must:
- Make sure there is suffi cient intake of fresh air for
combustion.
- Make sure the living space is completely isolated from
the combustion system of the refrigerator.
- Make sure there is complete and unrestricted ven-
tilation of the fl ue exhaust which, in gas mode, can
produce carbon monoxide. The breathing of carbon
monoxide fumes can cause dizziness, nausea, or in
extreme cases, death.
Certifi ed installation needs one lower intake vent and one up-
per exhaust vent. Install the vents through the side wall of the
vehicle exactly as instructed in this manual. Any other installa-
tion method voids both the certifi cation and the factory war-
ranty of the refrigerator.
The bottom of the opening for the lower intake vent, which is
also the service access door, must be even with or immediately
below the fl oor level. This allows any leaking LP gas to escape
to the outside and not to collect at fl oor level.
American Gas Association/Canadian Gas Association (AGA/
CGA) certifi cation allows the refrigerator to have zero (0) inch
minimum clearance at the sides, rear, top, and bottom. While
there are no maximum clearances specifi ed for certifi cation,
the following maximum clearances are necessary for correct
refrigeration:
Bottom 0 inch min.
Each Side 0 inch min
Top 0 inch min.
Rear 0 inch min.
These clearances plus the lower and upper vents cause the
natural air draft that is necessary for good refrigeration. Cooler
air goes in through the lower intake vent, goes around the
refrigerator coils where it removes the excess heat from the re-
frigerator components, and goes out through the upper exhaust
vent. If this air fl ow is blocked or decreased, the refrigerator
may not cool correctly.
Each NORCOLD model is certifi ed by AGA and CGA for cor-
rect ventilation.
4 - Service Manual N300 Models

Propane Gas Components

This refrigerator operates on propane gas at a pressure of 10.5
inches Water Column min. to 11.5 inches Water Column max.

Examine the gas supply system for leaks:

Using a solution of liquid detergent and water, make sure the
gas supply line and all gas connections have no leaks. Do not
use any liquid that contains ammonia.
If you use compressed air for the test:
0 inch max.
- The pressure of the compressed air at the manual shutoff
1/8 inch max.
1/4 inch max.
- If the pressure of the compressed air is more than 1/2 psig
1 inch max.
- If the pressure of the compressed air is equal to or less
WARNING:
Be very careful when working on or near
the propane gas system.
- Do not smoke, or use an open fl ame near the propane
gas system.
- Do not use an open fl ame to examine for leaks.
- Do not connect the refrigerator to the propane gas
tank without a pressure regulator between them.
- To avoid possible propane gas leaks, always use two
wrenches to tighten or loosen the gas supply line con-
nections.
- Leaking propane gas can ignite or explode and result
in dangerous personal injury or death.
WARNING: Do not allow the leak detecting solution
to touch the electrical components. Many liquids are
electrically conductive and can cause a shock hazard,
electrical shorts, and in some cases fi re.
valve of the refrigerator must not be more than 1/2 psig
(14 inches Water Column).
(14 inches Water Column), remove the gas supply line
from the manual shutoff valve of the refrigerator before the
test.
than 1/2 psig (14 inches Water Column), close the manual
shutoff valve of the refrigerator before the test.