TECHNICAL
TECHNICAL
GUIDE
GUIDE
LX SERIES
SPLIT SYSTEM
AIR CONDITIONERS
14 SEER - R-410A - 1 PHASE
1.5 TO 5 NOMINAL TON
MODELS: TW4B18 TO 60
®
Due to continuous product improvement, specifications
are subject to change without notice.
Visit us on the web at
www.simplygettingthejobdone.com
Additional rating information can be found at
www.ahridirectory.org
WARRANTY SUMMARY*
Standard 5-year limited parts warranty.
Standard 10-year limited compressor warranty.
Extended 10-Years limited parts warranty when product is
registered online within 90 days of purchase for replacement
or closing for new home construction.
*Does not apply to R-22 models, 3-Phase models, or internet sales.
See Limited Warranty certificate in User's Information Manual for details.
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
FOR INSTALLATION IN ALL US REGIONS AND CANADA
Installation Allowed
DESCRIPTION
The TW4B models are optimized for 14 SEER Regional Mini-
mum Efficiency and the high EER required in the Southwest
US. These outdoor units are specifically designed to be
matched with our residential indoor coils, furnaces, and air han-
dlers to provide a complete system solution.
FEATURES
• Small Footprint - Minimum footprint for easier handling,
transportation, and installation.
• Easier Installation - Independent panels provide quick
access for unit setup. Installation time is reduced by easy
power and control wiring access. Select indoor matches with
factory-mounted TXVs are available for quicker system
installation. The factory installed filter-drier and factory
charge for a 15-ft lineset means less time spent brazing and
charging the system. The small base dimension and reduced
unit clearances make for easier retrofits.
• Accessible Information - QR code on unit provides quick
access to technical documents and warranty information.
• Durable Finish - The coated steel wire fan guard, coated
external fasteners, and pre-treated G90-equivalent galva-
nized steel chassis components resist corrosion and rust
creep. Titanium colored powdercoat paint further protects
external panels.
• Quality Coils - The high efficiency microchannel aluminum
coil is manufactured using an improved material system pro-
viding reliable performance and small unit size.
• Rugged Coil Protection - Coils are protected from mechan-
ical damage by a proven stamped steel coil guard design.
• Protected Compressor - Compressors are protected inter-
nally by a high pressure relief valve and a temperature sen-
sor, and externally by the system high pressure switch. The
liquid line filter-drier is factory installed to protect the com-
pressor against moisture and debris.
• Reliable Operation - Ball bearing fan motors provide supe-
rior performance in extreme temperatures.
• Environmentally Friendly - CFC-free R-410A refrigerant
delivers environmentally friendly performance with zero
ozone depletion.
• Top Discharge - Warm air is blown up, away from the struc-
ture and any landscaping and allows compact location on
multi-unit applications.
• Low Operating Sound Levels - Developed using CFD and
FEA tools, the sturdy cabinet and top design provides sound
performance of 76 dBA or lower. Compatible accessories for
further sound reduction are also available.
• Better Service Access - Diagonal base valves with open
access for low-loss fittings, single panel access to the electri-
cal controls, swing out control box for full corner access, and
removable fan guard allow easy access for unit mainte-
nance.
• Agency Listed - Safety certified by CSA to UL 1995 / CSA
22.2. Performance certified to ANSI/AHRI Standard 210/240
in accordance with the Unitary Small Equipment certification
program.
5753883-BTG-C-0221