Lennox Merit 13HPX Series Installation Instructions Manual page 7

DETAIL A
DETAIL C
If unit coil cannot be mounted away from prevailing winter winds, a wind
barrier should be constructed. Size barrier at least the same height and
width as outdoor unit. Mount barrier 24 inches (610 mm) from the sides of
the unit in the direction of prevailing winds as illustrated.
INLET AIR
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INSTALL UNIT AWAY
FROM WINDOWS
TWO 90_ ELBOWS INSTALLED IN LINE SET
WILL REDUCE LINE SET VIBRATION
PREVAILING WINTER WINDS
WIND BARRIER
INLET AIR
INLET AIR
INLET AIR
Figure 5. Placement, Slab Mounting and Wind Barrier
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DETAIL B
These units operate under a wide range of weather conditions;
therefore, several factors must be considered when positioning the
outdoor unit. The unit must be positioned to give adequate clearances
for sufficient airflow and servicing.
S
Install unit level or, if on a slope, maintain slope tolerance of 2
degrees (or 2 inches per 5 feet [50 mm per 1.5 m]) away from
building structure.
S
Install the unit high enough above the ground or roof to allow
adequate drainage of defrost water and prevent ice or snow
build−up.
S
In heavy snow areas, do not locate the unit where drifting will
occur. The unit base should be elevated above the depth of
average snows. Stand−off kits are available for ordering using
either catalog numbers
S
When installed in areas where low ambient temperatures exist,
locate unit so winter prevailing winds do not blow directly onto
outdoor unit.
S
Locate unit away from overhanging roof lines which would allow
water or ice to drop on, or in front of, coil or unto unit.
BUILDING
STRUCTURE
Page 7
94J45 (4 each) or 30K79 (20 each).
DISCHARGE AIR
MOUNTING
SLAB
GROUND LEVEL
13HPX SERIES