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CB26UH & CBX26UH PARTS ARRANGEMENT
FIGURE 1
ELECTRIC HEAT SECTION
(plate to be removed if installed)
CONTROL BOX
BLOWER COMPARTMENT
COIL
HORIZONTAL DRAIN PAN
EXPANSION VALVE
(R−22 or R−410A)
UPFLOW DRAIN PAN
I−APPLICATION
All major blower coil components must be matched ac-
cording to Lennox recommendations for the unit to be
covered under warranty. Refer to the Engineering Handbook
for approved system matchups. A misapplied system will
cause erratic operation and can result in early unit failure. The
units come with factory installed check and expansion valve for
all applications. The TXV valve has been installed internally for
a cleaner installation and is accessible if required.
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
Electrostatic discharge can affect electronic
components. Take precautions during unit instal-
lation and service to protect the unit’s electronic
controls. Precautions will help to avoid control
exposure to electrostatic discharge by putting
the unit, the control and the technician at the
same electrostatic potential. Neutralize electro-
static charge by touching hand and all tools on an
unpainted unit surface before performing any
service procedure.