Norcold DC440 Service Manual page 12

Ventilation - Procedure I
Ventilation is necessary for the correct operation of the refrigerator and to increase the life of the
refrigerator cooling system. Ventilation allows the natural air flow that is necessary for good refrigeration.
Cooler air comes in from the living area of the vehicle through a lower intake vent, goes around the
refrigerator coils where it removes the excess heat from the refrigerator components, and goes out into
the living area of the vehicle through an upper exhaust vent. If this air flow is blocked or decreased, the
refrigerator will not cool correctly. Do not install the vents into areas such as closets or cabinets.
Each refrigerator has specified minimum vent size requirements (See page 12). However, more air
flow over the refrigerator coils increases the cooling performance of the refrigerator. If the construction of
the vehicle does not allow you to install the vents into the living area of the vehicle, use any of the following
approved vent combinations that are at the rear of the refrigerator (See Art01129).
CAUTION:
Each refrigerator has specified minimum vent size re-
quirements. Vent sizes that are less than the minimum
requirements can cause:
- shortened life of the refrigerator cooling unit.
- poor cooling performance of the refrigerator.
- continuous operation of the refrigerator.
- fast battery discharge.
- void of the refrigerator warranty.
A / B, B / C, C / D, D / E, E / I, F / I, G / I; H / I
A / D, B / E,,C / I, D / F, E / J , F / J, G / J, H / J
A / I, B / F, C / J; D / G, A / J, B / G, D / H, B / H
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