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LHT/LDT156, 180, 240
5- Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
NOTE-When installing a unit on a combustible surface for
downflow discharge applications, an LARMF18/36 roof
mounting frame is required.
B-Horizontal Discharge Applications
1- Units installed in horizontal airflow applications must
use an LARMFH18/24 horizontal roof mounting
frame. The supply air duct connects to the horizontal
supply air opening on the LARMFH18/24. The return
air duct connects to the unit horizontal return air
opening. Refer to unit dimensions.
2- Specified installation clearances must be maintained
when installing units. Refer to figure 1.
3- Top of support slab should be approximately 4”
(102mm) above the finished grade and located so no
run-off water from higher ground can collect around
the unit.
4- Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
Duct Connection
All exterior ducts, joints and openings in roof or building
walls must be insulated and weather-proofed with
flashing and sealing compounds in accordance with
applicable codes. Any duct passing through an
unconditioned space must be insulated.
CAUTION
In downflow applications, do not drill or punch
holes in base of unit. Leaking in roof may occur if
unit base is punctured.
Rigging Unit For Lifting
Rig unit for lifting by attaching four cables to holes in unit
base rail. See figure 2.
1- Detach wooden base protection before rigging.
2- Connect rigging to the unit base using both holes in
each corner.
3- All panels must be in place for rigging.
4- Place field‐provided H‐style pick in place just above
top edge of unit. Frame must be of adequate
strength and length. (H-style pick prevents damage
to unit.)
CAUTION - Do not
walk on unit.
IMPORTANT - ALL PANELS MUST
BE IN PLACE FOR RIGGING.
RIGGING
LIFTING POINT SHOULD BE DIRECTLY
ABOVE CENTER OF GRAVITY
*Maximum weight with all available
factory-installed accessories.
FIGURE 2
Kg.
Unit
*Weight
Lbs.
LH 156, 180, 240
LD 156, 180, 240
2700 1225
2850 1293
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