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EL16XC1 SERIES
WARNING
To prevent personal injury, as well as damage to panels,
unit or structure, observe the following:
While installing or servicing this unit, carefully stow all
removed panels so that the panels will not cause injury
to personnel, objects or nearby structures. Also, take
care to store panels where they will not be subject to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions (especially wind) that may cause
panels to be blown around and damaged.
STEP 2 -- REFRIGERANT PIPING —
Flushing Existing Line Set & Indoor Coil
Flush the existing line set per the following instruc
tions. For more information, refer to the Installation
and Service Procedures manual available on DaveNet.
CAUTION - DO NOT attempt to flush and re-use exist
ing line sets or indoor coil when the system contains
contaminants (i.e., compressor burn out).
IMPORTANT !
If this unit is being matched with an approved line
set or indoor unit coil that was previously charged
with mineral oil, or if it is being matched with a coil
which was manufactured before January of 1999,
the coil and line set must be flushed prior to installa
tion. Take care to empty all existing traps. Polyol es
ter (POE) oils are used in Lennox units charged with
HFC-410A refrigerant. Residual mineral oil can act
as an insulator, preventing proper heat transfer. It
can also clog the expansion device and reduce sys
tem performance and capacity.
Failure to properly flush the system per this instruc
tion and the detailed Installation and Service Proce
dures manual will void the warranty.
WARNING
When using a high pressure gas such as
nitrogen to pressurize a refrigeration or air
conditioning system, use a regulator that
can control the pressure down to 1 or 2 psig
(6.9 to 13.8 kPa).
WARNING
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.
WARNING
Fire, Explosion and Personal Safety Haz
ard. Failure to follow this warning could re
sult in damage, personal injury or death.
Never use oxygen to pressurize or purge
refrigeration lines. Oxygen, when exposed
to a spark or open flame, can cause fire
and/or an explosion, that could result in
property damage, personal injury or death.
WARNING
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.
TABLE 1
REFRIGERANT LINE SET — INCHES (MM)
Model Number (-xx*)
Valve Size Connections Recommended Line Sets
Liquid Line Suction Line
L15 Line Set
Model
Line Set Length Catalog Number
EL16XC1-018-230AXX
EL16XC1-024-230AXX
EL16XC1-030-230AXX
3/8” (10 mm) 3/4” (19 mm)
L15-41-20 20 feet (6.1 m) 89J56
L15-41-30 30 feet (9.1 m) 89J57
L15-41-40 40 feet (12.2 m) 89J58
L15-41-50 50 feet (15.2 m) 89J59
EL16XC1-036-230AXX
EL16XC1-041-230-XX
EL16XC1-042-230AXX
EL16XC1-047-230-XX
EL16XC1-048-230-XX
3/8” (10 mm) 7/8” (22 mm)
L15-65-30 30 feet (9.1 m) 89J60
L15-65-40 40 feet (12.2 m) 89J61
L15-65-50 50 feet (15.2 m) 89J62
EL16XC1-060-230-XX 3/8” (10 mm) 1-1/8” (29 mm) ** Field-fabricated N/A N/A
* Applicable to all minor revision numbers unless otherwise specified.
** Some applications may require a field-provided 1-1/8” to 7/8” adapter.
NOTE - When installing refrigerant lines longer than 50 feet, refer to the Refrigerant Piping Design and Fabrication Guidelines manual
available on DaveNet (Corp. 9351-L9), or contact the Technical Support Department Product Application group for assistance.
NOTE - For new or replacement line set installation, refer to Service and Application Note - Corp. 9112-L4 (C-91-4).