RETURN SYSTEM
-Risers use interior wall structure
-Using floor joists area for return to unit
-Each return grill is filtered
FIG. A22
10
Section A - Installation, cont’d.
RETURN
RISER X 2
2" X 12" INSULATED
DUCT (MIN.)
90 SQ. IN.
FILTERED
(MIN. X 2)
DISCHARGE
CONDENSER
AIR
SUPPLY AIR
INSULATED
2" X 10" CLOSEABLE
GRILL (MIN. X 4))
MIN. 180 SQ. IN.
REQUIRED OPENING
ENCLOSED
FLOOR JOIST
FLOORING
FLOOR CUTOUT
90 SQ. IN. MINIMUM
FLOOR CUTOUT
90 SQ. IN. MINIMUM
Models 39224 and 39424
Condenser Section:
Supply Air
The inlet of the condenser coil should be positioned so that
it draws air from outside the vehicle.
Special care must
be taken to prevent the discharge air from recirculat-
ing to the inlet of the condenser coil.
Shields should be
added to ensure fresh air supply.
Do not install the condenser where the fan
will draw air from the exhaust of the vehicle,
a motor generator set, transmission, road
heat or ANY other heat producing source.
FIG. A23
FIELD INSTALLED SHIELD THAT WILL PREVENT
RECIRCULATION OF CONDENSER AIR.
The condenser section is a “draw-through” type. When the
face of the coil is positioned behind a louvered or other
type of restrictive opening, the FREE AREA of the opening
must be
at least 460 square inches.
A6b. Basement Units
Manual
Compliments
of
Northwest
RV
Supply
Printed
From
http://www.nwrvsupply.com
