Carrier 50LJ - Manual (Page 3)

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1 Rig with 4 cables and spread with two 95-in. (2413-mm) and
2 “A” long suitable spreader bars.
2 Center of gravity and unit weight include economizer, but not econ­
omizer hood
NOTES:
A CAUTION
1 All panels must be in place when rigging.
2. Unit is not designed for handling by forklift truck.
3/4 IN (19 MM) NOTCHES
IN END OF SPREADERS
NOTICE TO RIGGERS
MODEL
UNIT WEIGHT A B C
Lb Kg In. mm In. mm In. mm
48LJD
2895 1313 85 91 2182 61 1549 43 1092
49LJE
2975 1349 85.91 2182 61 1549 43 1092
50LJ
2565 1164 6.14 1680 49 1245 44 1118
50LW
2775 1259 85.91 2182 61 1549 43 1092
ACCESSORY/OPTION WEIGHTS
ROOF CURB
ECONOMIZER
WITHOUT HOOD
ECONOMIZER
HOOD
POWER EXHAUST/
BAROMETRIC
RELIEF HOOD
Lb Kg Lb Kg Lb Kg Lb Kg
280 127 140 63.6 155 70.3 130 59.1
Fig. 1 — Rigging Labei
Field-Fabricated Ductwork — Secure all ducts to
building structure, using flexible duct connectors between
roofcurb and ducts as required. Ducts passing through an
unconditioned space must be insulated and covered with a
vapor barrier. Outlet grilles must not lie directly below unit
discharge.
48LJ UNITS — These units are field-convertible with the
use of an accessory horizontal conversion kit. They are shipped
from the factory as vertical supply/retum, but may be field
converted to horizontal supply/retum.
Attach field-fabricated ductwork to the roof curb. The
retum-air duct connection (inside dimensions) is 46.75-in.
long X 30.59-in. wide; the supply-air duct connection (in­
side dimensions) is 38.63-in. long x 27-in. wide. Connect
ductwork to 16-gage roof curb material. Secure all ducts to
the building structure, using flexible duct connectors be­
tween roof curb and ducts as required. Ducts passing through
an unconditioned space must be insulated and covered with
a vapor barrier. Outlet grilles must not lie directly below
unit discharge. The return duct must have a 90-degree el­
bow before opening into the occupied building space if unit
is equipped with power exhaust.
Vertical discharge ducts are designed to be attached to
accessory roof curb. If unit is mounted on dunnage, it is
recommended that the ducts be supported by cross braces
as shown for accessory roof curb. Duct should be the same
size as shown on the roof curb certified drawing.
Units may be connected to horizontal supply/retum
ductwork with the use of the accessory horizontal conver­
sion package.
50LJ UNITS — On these units, attach field-fabricated
ductwork to roof curb. The retum-air duct connection
(inside dimensions) is 49.81-in. long x 30.59-in. wide; the
supply-air duct connection (inside dimensions) is 37.87-in.
long X 31.02-in. wide. Connect ductwork to 16-gage roof
curb material. (See installation instractions shipped with
accessory roof curb.)
50LW UNITS — On these units, attach field-fabricated
ductwork to factory-supplied duct flanges mounted on the
side of the unit. See Fig. 5c. Duct flange height is approx­
imately one inch; flange is 18-gage sheet metal. The hori­
zontal supply and return duct openings (inside dimensions)
are 26.85-in. wide x 42.03-in. high.