Page 24 IM-738
Post and Rail Mounting
When mounting by post and rail, the structural support should
be run the full length of the unit. The structural member should
be located at the base of the unit as shown in Figure 23 assur-
ing the shaded area is well supported by the structural member.
If resilient material is placed between the unit and the rail,
insert a heavy steel plate between the unit and the resilient
material to distribute the load. Cabinet penetrations (electrical,
piping, etc.) should be properly sealed to protect against mois-
ture and weather.
Figure 23. Post and Rail Mounting
Maximum recommended width for structural member is 5" (127 mm) to
allow for adequate space for duct connections and electrical entry.
Rigging and Handling
Lifting brackets with 2" (51 mm) diameter holes are provided
on the sides of the unit.
Use spreader bars, 96" to 100" (2438 to 2540 mm) wide to pre-
vent damage to the unit cabinet. Avoid twisting or uneven lift-
ing of the unit. The cable length from the bracket to the hook
should always be longer than the distance between the outer
lifting points.
If the unit must be stored at the construction site for an inter-
mediate period, these additional precautions should be taken:
1. Make sure to support the unit well along the length of the
base rail.
2. Make sure to level the unit (no twists or uneven ground
surface).
3. Provide proper drainage around the unit to prevent flood-
ing of the equipment.
4. Provide adequate protection from vandalism, mechanical
contact, etc.
5. Securely close the doors.
6. If there are isolation dampers, make sure they are properly
installed and fully closed to prevent the entry of animals
and debris through the supply and return air openings.
7. Cover the supply and return air openings on units without
isolation dampers.
Figure 24 shows an example of the rigging instruction label
shipped with each unit.
Figure 24. Rigging and Handling Instruction Label
CAUTION
The unit must be level side to side and over the entire
length.
Equipment damage can result if the unit is not level.
Unit
W
In. mm
015C-040C 94 2388
045C-075C 99 2538
5 " *
W
WARNING
Use all lifting points. Severe personal injury and property
damage can result from improper lifting adjustment.
A
S p r e a d e r B a r s
R e q u i r e d
C a u t i o n :
L i f t i n g p o i n t s m a y n o t
b e s y m m e t r i c a l t o c e n t e r o f
g r a v i t y o f u n i t . B a l a s t o r u n e q u a l
c a b l e l e n g t h s m a y b e r e q u i r e d
U n i t h a s e i t h e r f o u r o r s i x l i f t i n g p o i n t s ( f o u r - p o i n t s h o w n b e l o w ) .
C a u t i o n : A l l l i f t i n g p o i n t s m u s t b e u s e d .
N o t e :
R i g g i n g c a b l e s m u s t b e a t l e a s t a s l o n g a s d i s t a n c e " A " .
R i g g i n g a n d H a n d l i n g I n s t r u c t i o n s
L i f t O n l y A s I n d i c a t e d
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