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PLACEMENT
Install unit away from windows.
TWO 90° ELBOWS INSTALLED IN LINE SET
WILL REDUCE LINE SET VIBRATION.
FIGURE 2
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.
BUILDING
STRUCTURE
FIGURE 3
DISCHARGE AIR
MOUNTING
SLAB
GROUND LEVEL
STABILIZING UNIT ON UNEVEN SURFACES
#10 X 1/2" LONG
SELF-DRILLING
SHEET METAL
SCREWS
STABILIZING BRACKET
(18-GAUGE METAL — 2"
WIDTH; HEIGHT AS
REQUIRED)
#10 X 1-1/4" LONG
HEX HD SCREW AND
FLAT WASHER
PLASTIC ANCHORS
(DRILL 1/4" HOLE)
CONCRETE SLAB
!
Unit Stabilizer Bracket Use
Always use stabilizers when unit is raised
above the factory height.
(Elevated units could become unstable in
gusty wind conditions.)
Stabilizers may be used on any unit installed
on unstable and uneven surfaces.
STEP 2 – REFRIGERANT PIPING –
Flushing Existing Line Set & Indoor Coil
F
lush the existing line set per industry standards. For
more information, refer to the XCZ20 Installation and
Service
Procedures
LennoxPros.com. CAUTION - DO NOT attempt to flush
and re-use existing line sets or indoor coil when the
system contains contaminants (i.e., compressor burn
out).
Refrigerant can be harmful if it is inhaled. Refrigerant
must be used and recovered responsibly.
Failure to follow this warning may result in personal
injury or death.
Polyol ester (POE) oils used with HFC-410A refrigerant
absorb moisture very quickly. It is very important that
the refrigerant system be kept closed as much as
possible. DO NOT remove line set caps or service valve
stub caps until you are ready to make connections.
Page 3
CORNER POST
IMPORTANT !
(field-provided):
FIGURE 4
manual
available
WARNING
WARNING
COIL
BASE PAN
on
XCZ20 SERIES
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