Thetford Norcold 453 - Manual (Page 6)

Optimum Installation - Figure 1
The optimum installation is illustrated in Figure 1.
1. Area above refrigerator blocked (baffled) off to
prevent trapping of hot air above the refrigerator.
2. 0 -1/4 inch clearance at the top of the refrigerator.
3. Exhaust vent centered directly over refrigera-
tor’s condenser.
4. 0 - 1 inch at rear of the refrigerator.
5. 0 inch clearance at bottom of refrigerator.
Exhaust Vent Centered - Figure 2
Figure 2 further illustrates the requirement to center
the exhaust vent opening over the condenser of the
refrigerator.
.
Alternate Construction Requirements
Figure 3
1. Exhaust vent opening is inboard in relation to
the rear of the refrigerator.
2. Baffles added to the top of the refrigerator to
assist in directing air flow out the exhaust vent.
3. 0-1/4 inch clearance at the top of the refrigerator.
4. Angle between baffles and rear top edge of the
refrigerator not to exceed 45 degrees.
5. Deflectors added at rear in strategic locations
adjacent to the cooling units condenser and ab-
sorber coils to reduce clearance to 0 to 1 inch.
4
5
3
Condenser
(source of
rejected heat)
Absorber
(source of
rejected heat)
Air flow path
1
2
Figure 1
5
Absorber
1
2
4
Condenser
2
3
Figure 3
Exhaust vent opening
centered over condenser
(front to rear of vehicle)
Figure 2
6