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"B"
REQUIRED
SPREADER
BARS
UNIT
50TC–A07
NOTES:
1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.
2. Dimensions in ( ) are in millimeters.
3. Hook rigging shackles through holes in base rail, as shown in detail "A." Holes in base rails are centered around the unit center of gravity.
Use wooden top to prevent rigging straps from damaging unit.
POSITIONING ON CURB — Position unit on roof curb so
that the following clearances are maintained:
clearance between the roof curb and the base rail inside the
front and back, 0.0 in. clearance between the roof curb and the
base rail inside on the duct end of the unit. This will result in
the distance between the roof curb and the base rail inside on
the condenser end of the unit being approximately
(6.4 mm).
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment dam-
age.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck.
After unit is in position, remove rigging skids and shipping
materials.
Step 7 — Convert to Horizontal and Connect
Ductwork (when required) —
vertical duct configuration. Unit without factory-installed
economizer or return air smoke detector option may be field-
converted to horizontal ducted configuration. To convert to
horizontal configuration, remove screws from side duct open-
ing covers and remove covers. Using the same screws, install
covers on vertical duct openings with the insulation-side down.
Seals around duct openings must be tight. See Fig. 7.
36"- 54"
(914-1371)
"C"
"A"
SEE DETAIL "A"
MAX WEIGHT
lb
kg
1040
473
Fig. 6 — Rigging Details
1
/
in. (6.4 mm)
4
1
/
4
Unit is shipped in the
PLACE ALL SEAL STRIP IN PLACE
BEFORE PLACING UNIT ON ROOF CURB.
DUCT END
A
in.
mm
74.5
1890
in.
Fig. 7 — Horizontal Conversion Panels
Field-supplied flanges should be attached to horizontal duct
openings and all ductwork should be secured to the flanges. In-
sulate and weatherproof all external ductwork, joints, and roof
or building openings with counter flashing and mastic in accor-
dance with applicable codes.
Do not cover or obscure visibility to the unit's informative
data plate when insulating horizontal ductwork.
Step 8 — Install Outside Air Hood
ECONOMIZER AND TWO POSITION DAMPER HOOD
PACKAGE REMOVAL AND SETUP
OPTION
1. The hood is shipped in knock-down form and must be
field assembled. The indoor coil access panel is used as
the hood top while the hood sides, divider and filter are
packaged together, attached to a metal support tray using
plastic stretch wrap, and shipped in the return air com-
partment behind the indoor coil access panel. The hood
10
DETAIL "A"
DIMENSIONS
B
in.
mm
in.
38
965
41.5
C
mm
1055
FACTORY
—
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