Table of Contents
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©2017 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
WARNING
This product contains a chemical known to the State
of California to cause cancer, birth defects, or other
reproductive harm.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
IMPORTANT: Special procedures are required for cleaning the all-aluminum coil in this unit. See page 15 in this instruction
for information.
IMPORTANT INFORMATION FOR INSTALLER
CHECK FOR AND REMOVE THESE ITEMS BEFORE OPERATING UNIT.
BLOWER HOUSING
SUPPORT PAD
HORIZONTAL DRAIN PAN (SEE PAGES 4
AND 6)
D
REFRIGERANT LINE PLUGS
(SEE PAGE 6)
INSTALLATION
INSTRUCTIONS
Elite
CBA27UHE Air Handler Units
MULTI-POSITION AIR HANDLERS
507674-01
3/2017
Table of Contents
Unit Dimensions .............................................................3
General Information .......................................................4
Shipping and Packing List .............................................4
Requirements ................................................................4
Installing the Unit ...........................................................4
Brazing Connections .....................................................6
Installing the Condensate Drain ....................................7
Inspecting and Replacing Filters ...................................8
Sealing the Unit .............................................................8
Measuring Static Pressure ............................................9
Adjusting the Blower Speed ..........................................9
Making Electrical Connections ....................................12
Repairing or Replacing Cabinet Insulation ..................15
Homeowner Maintenance ............................................15
Check-Out Procedures ................................................16
TOP CAP SHIPPING
BRACKET (REPLACE
SCREWS IN TOP CAP
AFTER REMOVAL)
DRIP SHIELD. (USED FOR -060 UNITS HORIZONTAL
APPLICATIONS ONLY.) (SEE PAGE 5.) SHOWN
INSTALLED ON DRAIN PAN IN -060 UNIT.
Page 1
Series
®
D
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Do you have a question about the CBA27UHE-018 and is the answer not in the manual?
Questions and answers
My unit collects the condensate in the pan below while the gravity lines are unclogged what is the problem
If the Lennox CBA27UHE-018 unit collects condensate in the pan while the gravity drain lines are unclogged, a possible problem could be the lack of a required vent in the drain line. The vent must extend at least two inches above the height of the coil drain pan. Without proper venting, air pressure can prevent proper drainage, causing water to back up into the pan.
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