10
A-B
0.5” (13)
B-C
1.0” (25)
A-C
1.0” (25)
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
C06110
Fig. 6 -- Unit Leveling Tolerances
Step 5 — Field Fabricate Ductwork
Cabinet return-air static pressure (a negative condition)
shall not exceed 87 Pa (0.35 in. wg) with economizer or
112 Pa (0.45 in. wg) without economizer.
For vertical ducted applications, secure all ducts to roof curb
and building structure. Do not connect ductwork to unit.
Insulate and weatherproof all external ductwork, joints,
and roof openings with counter flashing and mastic in
accordance with applicable codes.
Ducts passing through unconditioned spaces must be
insulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return
should be ducted through the roof deck to comply with
applicable fire codes.
For units with accessory electric heaters: Horizontal
applications require a minimum clearance to combustible
surfaces of 25 mm (1--in) from duct for first 305 mm (12--in)
away from unit. Vertical applications do not require a
minimum clearance.
Minimum clearance is not required around ductwork.
DETAIL A
SEE DETAIL “A”
“C”
“B”
“A”
914-1371
(36"-54")
FAN
SIDE
DUCT END
PLACE ALL SEAL STRIP
IN PLACE BEFORE PLACING
UNIT ON ROOF CURB
C09458
UNIT
MAX WEIGHT
DIMENSIONS
A B C
KG LB MM IN MM IN MM IN
50TC-A07 336 740 1890 74.5 965 38.0 850 33.5
50TC-D08 641 1410 2235 88.0 1040 41.0 1055 41.5
50TC-D09 693 1525 2235 88.0 1030 40.5 1255 49.5
50TC-D12 711 1565 2235 88.0 1015 40.0 1255 49.5
NOTES:
1. Dimensions in ( ) are in inches.
2. 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.
Fig. 7 -- Rigging Details
50TC
