9
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.
Fabricate supply ductwork so that the cross sectional dimensions
are equal to or greater than the unit supply duct opening dimen-
sions for the first 18 in. (458 mm) of duct length from the unit
basepan.
Insulate and weatherproof all external ductwork, joints, and roof
openings with counter flashing and mastic in accordance with ap-
plicable 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.
A minimum clearance is not required around ductwork.
Step 6 — Rig and Place Unit
Keep unit upright and do not drop. Spreader bars are required.
Rollers may be used to move unit across a roof. Rigging materials
under unit (cardboard or wood) must be removed PRIOR to plac-
ing the unit on the roof curb. Level by using unit frame as a refer-
ence. See Table 2 and Fig. 6 for additional information.
Lifting holes are provided in base rails as shown in Fig. 6. Refer to
rigging instructions on unit.
Rigging materials under unit (cardboard or wood to prevent base
pan damage) must be removed PRIOR to placing the unit on the
roof curb.
When using the standard side drain connection, ensure the red
plug in the alternate bottom connection is tight. Do this before set-
ting the unit in place. The red drain plug an be tightened with a
1
/
2
-
in. square socket drive extension. For further details, see “Install
External Condensate Trap and Line” on page 15.
Before setting the unit onto the curb, recheck gasketing on curb.
Fig. 6 — Rigging Details
A
B
C
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
A-B
B-C
A-C
0.5 (13)
1.0 (25)
1.0 (25)
CAUTION
Failure to follow this caution may result in damage to roofing
materials.
Membrane roofs can be cut by sharp sheet metal edges. Be
careful when placing any sheet metal parts on such roof.
CAUTION
Failure to follow this caution may result in injury or equipment
damage.
All panels must be in place when rigging. Unit is not designed
for handling by fork truck when panels or packaging are re-
moved.
If using top crate as spreader bar, once unit is set, carefully
lower wooden crate off building roof top to ground. Ensure
that no people or obstructions are below prior to lowering the
crate.
DETAIL "A"
PLACE ALL SEAL STRIP IN PLACE
BEFORE PLACING UNIT ON ROOF CURB.
DUCT END
SEE DETAIL "A"
"A"
(914-1371)
36"- 54"
"C"
"B"
SPREADER
BARS
REQUIRED
UNIT
MAX WEIGHT
DIMENSIONS
A
B
C
LB
KG
IN.
MM
IN.
MM
IN.
MM
582J*A04
795
361
74.5
1890
39
990
33.5
850
582J*A05
890
405
74.5
1890
39
990
33.5
850
582J*A06
1020
464
74.5
1890
39
990
41.5
1055
NOTES:
1. SPREADER BARS ARE 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.
Summary of Contents for 582J 04-06
Page 4: ...4 Fig 2 Unit Dimensional Drawing ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont ...
Page 21: ...21 Fig 38 Typical Perfect Humidity Adaptive Dehumidification System Humidistat Wiring ...
Page 23: ...23 Fig 40 Typical Control Wiring Diagram Electro Mechanical with W7212 ...
Page 25: ...25 Fig 43 Typical IGC Control Wiring Diagram ...