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KHA180, 240
B−Horizontal Discharge Applications
1− Units installed in horizontal airflow applications must
use an LARMFH18/36 horizontal roof mounting
frame. The supply air duct connects to the horizontal
supply air opening on the LARMFH18/36. 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 KHA units. Refer to figure 1.
3− Top of support slab should be at least 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 weatherproofed with flashing
and sealing compounds in accordance with applicable
codes. Any duct passing through an unconditioned space
must be insulated.
In downflow applications, do not drill or punch
holes in base of unit. Leaking in roof may occur if
unit base is punctured.
CAUTION
!
Rigging Unit For Lifting
1− Detach wooden base protection before rigging.
2− Connect rigging to the unit base using both holes in
each corner. See figure 2.
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 top of unit.)
Condensate Drains
Remove plug and make drain connection to the 1" N.P.T.
drain coupling provided on unit. A trap must be installed
between drain connection and an open vent for proper
condensate removal. See figure 3. It is sometimes
acceptable to drain condensate onto the roof or grade;
however, a tee should be fitted to the trap to direct
condensate downward. The condensate line must be
vented. Check local codes concerning condensate disposal.
Refer to pages 1 and 2 for condensate drain location.
Note − The drain pan is made with a glass reinforced
engineered plastic capable of withstanding typical joint
torque but can be damaged with excessive force. Tighten
pipe nipple hand tight and turn an additional quarter turn.
2350
2635
KHA180
KHA240
FIGURE 2
Lifting Point Should
Be Directly Above
Center Of Gravity.
CAUTION: DO NOT
WALK ON UNIT.
UNIT
WEIGHT*
LBS. KG.
1066
1195
*Maximum weight with all
available accessories.
FIGURE 3
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UNIT
Minimum Pitch
1" (25 mm) per 10’
(3 m) of line
MOUNTING
FRAME
CONDENSATE DRAIN CONNECTION
OPEN VENT
CAULK AROUND
CONDENSATE
COUPLING
