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Fig. 5 - - Unit Leveling Tolerances
Step 5 — Field Fabricate Ductwork
Cabinet return-air static pressure (a negative condition)
shall not exceed 0.35 in. wg (87 Pa) with economizer or
0.45 in. wg (112 Pa) 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
MAX WEIGHT
UNIT
LB
558J*08D
1410
558J*09D
1525
558J*12D
1565
558J*14D
1720
NOTES:
1. Dimensions in ( ) are in millimeters.
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.
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
A-B
B-C
A-C
0.5" (13)
1.0" (25)
1.0" (25)
C06110
KG
IN
641
88.0
693
88.0
711
88.0
782
88.0
Fig. 6 - - Rigging Details
should be ducted through the roof deck to comply with
applicable fire codes.
For units with accessory electric
applications require a minimum clearance to combustibl8
surfaces of 1- - in (25 mm) from duct for first 12- - in (305 mm)
away from unit. Vertical applications do not require a
minimum clearance.
Minimum clearance is not required around ductwork.
Step 6 — Rig and Place Unit
Keep unit upright and do not drop. Spreader bars are not
required if top crating is left on unit. Rollers may be used
to move unit across a roof. Level by using unit frame as a
reference. See Table 1 and Fig. 6 for additional information.
Lifting holes are provided in base rails as shown in Fig. 6.
Refer to rigging instructions on unit.
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in
equipment damage.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck.
Before setting the unit onto the curb, recheck gasketing on
curb.
DIMENSIONS
A
B
MM
IN
2235
41.0
2235
40.5
2235
40.0
2235
28.5
9
heaters: Horizontal
CAUTION
C
MM
IN
MM
1040
41.5
1055
1030
49.5
1255
1015
49.5
1255
725
53.0
1345
C06005
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