Norcold 682 Installation And Operating Instructions Manual page 6

If this clearance ex-
ceeds 1", baffles
must be added to
prevent air by-pass
Baffle required to prevent trapping of hot air above refrigerator
Condenser
(source of
rejected heat)
Absorber
(source of
rejected heat)
When more than 1' clearance is required and/or roof jack is
installed inboard
Angle of baffle tilt not to exceed 45'
Not mandatory but recommended
for performance improvement
Greater than 1"
Add baffle within
1/4" to coils
Space above refrigerator baffled from point 'A" to point "8". Baffle bit must
not exceed 45'. Space at rear is baffled to improve draft through coils.
Roof Jack opening centered
over condenser (front to rear
of vehicle)
Figure 2 - Baffles Required at Rear
Construction Requirements
The optimum installation is illustrated in Figures 1,
3, 5, and 8 where clearances are minimum and the
roof jack is exactly centered over the refrigerator's
condenser. Not all coach construction will accommo-
date the optimum construction, so Figures 2 and 4
show optional installations which are permitted by the
certification.
Clearance at Rear
Figure 1 illustrates an installation where there is no
more than 1 inch clearance at the rear of the refrig-
erator. This is best for maximum efficiency.
Figure 2 illustrates an installation with more than 1
inch at the rear. The baffles are required to block off
by-pass air and still obtain good cooling efficiency.
Ventilation Above Refrigerator
The construction of Figure 3 achieves the best re-
sults where the roof opening is aligned with the con-
denser. Figure 4 illustrates an optional condition
where the roof opening is more inboard than the rear
of the refrigerator. This opening position is permitted,
provided a baffle is provided between Point A (in-
board edge of roof opening) and Point B (back edge
of refrigerator cabinet). The tilt angle (as indicated)
must not
exceed 45 degrees.
Figure 5 indicates the requirement to center the roof
jack opening over the condenser (front to rear of ve-
hicle). No options to this location are permitted.
Figure 3 - Roof Jack Above Condenser
Figure 4 - Roof Jack Inboard from Condenser
Figure 5 - Roof Jack Centered
(Front to Rear of Vehicle\
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