5
NOTES
:
1. Place unit on curb as close as possible to the duct end.
2. Dimension in ( ) is 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 skid
when rigging to prevent rigging straps from damaging unit.
4. Weights include base unit without economizer. See Table 1 for unit operating weights with accessory economizer.
5. Weights include base unit without the Perfect Humidity
t
adaptive dehumidification system. See Table 1 for unit operating weights with the Perfect Humidity
t
system.
C06111
Fig. 6
---
Rigging Details
UNIT
OPERATING
DIMENSIONS
UNIT
581C
OPERATING
WEIGHT
“A”
“B”
“C”
581C
lb
kg
in.
mm
in.
mm
in.
mm
024
530
240
73.69
1872
35.50
902
33.31
847
036
540
245
73.69
1872
35.50
902
33.31
847
048
560
254
73.69
1872
35.50
902
33.31
847
060
635
288
73.69
1872
35.50
902
41.31
1050
UNIT
OPERATING
DIMENSIONS
UNIT
581B
OPERATING
WEIGHT
“A”
“B”
“C”
581B
lb
kg
in.
mm
in.
mm
in.
mm
036
530
240
73.69
1872
35.50
902
33.31
847
048
540
245
73.69
1872
35.50
902
33.31
847
060
560
254
73.69
1872
35.50
902
33.31
847
072
635
288
73.69
1872
35.50
902
41.31
1050
C06208
Fig. 7
---
Roof Curb Alignment
Support gas piping as shown in the table in Fig. 11. For example,
a
3
/
4
-in. gas pipe must have one field-fabricated support beam
every 8 ft. Therefore, an 18-ft long gas pipe would have a
minimum of 3 support beams, and a 48-ft long pipe would have a
minimum of 6 support beams.
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal
injury, death and property damage.
All panels must be in place when rigging and lifting.
!
WARNING
See Fig. 11 for typical pipe guide and locations of external
manual gas shutoff valve.
NOTE
: If accessory thru-the-bottom connections and roof curb
are used, refer to the Thru-the-Bottom Accessory Installation
Instructions for information on power wiring and gas
connection piping. The power wiring, control wiring and gas
piping can be routed through field-drilled holes in the basepan.
The basepan is specially designed and dimpled for drilling the
access connection holes.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
When connecting the gas line to the unit gas valve, the
installer MUST use a backup wrench to prevent damage
to the valve.
!
WARNING
581B
,C
