Page 1
E2016 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
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.
INSTALLATION
INSTRUCTIONS
Merit
®
CBX25UH (-10) Series
Units
AIR HANDLERS
507600-03
9/2016
Shipping and Packing List
Package 1 of 1 contains the following:
1 - Assembled air handler unit factory-equipped for
upflow or horizontal air discharge application (includes
upflow and horizontal drain pans and pre-installed air
filter).
Check equipment for shipping damage. If found,
immediately report damage to the last carrier. Check the
unit rating plate to confirm that delivered unit matches
order.
General
The CBX25UH air handler is designed for indoor
installation only. As shipped, the unit is ready for
installation in either upflow, horizontal left-hand or
right-hand air discharge applications. Electric heat,
downflow air discharge kits, air filters and other
accessories are available and listed in the CBX25UH
Product Specification bulletin for ordering.
All units are shipped with a factory-installed
check/expansion valve.
WARNING
This product contains a chemical known to the State of
California to cause cancer, birth defects, or other repro
ductive harm.
IMPORTANT INFORMATION FOR INSTALLER
This unit has a delay relay that delays the supply blower “ON” for 1 second and keeps the blower “ON” for 45
seconds on all fan and cooling demands. For more details, refer to page 17 for unit sequence of operation.
1
SECOND
DELAY
OFF
100%
CFM
100%
CFM
45
SECS
COOLING
DEMAND
1
2
34
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