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Model Number Identification
Refrigerant Type
X = R410A
230
CB
32
036
−
01
Series
Nominal Cooling Capacity
018/024 = 1.5 to 2 tons (5.3 to 7 kW)
024/030 = 2 to 2.5 tons (7 to 8.8 kW)
036 = 3 tons (10.6 kW)
048 = 4 tons (14.1 kW)
060 = 5 tons (17.6 kW)
Minor Revision Number
Configuration
MV = Multi−Position, Variable
speed blower motor
−
X
Voltage
230 = 208/230V−60hz−1ph
−
−
6
Refrigerant Metering Device
2 = Fixed Orifice
3 = TXV − Bleed port (indoor unit)
4 = TXV − Non−bleed port (indoor unit)
5 = TXV − Non−bleed port (outdoor unit)
6 = TXV − R410A Non−bleed port (indoor
unit)
MV
Unit Type
CB = Air Handler
General
This indoor unit is designed for installation with optional
field−installed electric heat and a matched remote outdoor
unit that is charged with HFC−410A refrigerant. These
units, designed for indoor installation in multiple positions,
are completely assembled for upflow and horizontal
right−hand discharge before being shipped from the
factory.
All CBX32MV air handlers are equipped with a
factory−installed, internally mounted check / expansion
valve (CTXV), which is suitable for use in HFC−410A
applications.
This air handler is compatible with the ComfortSense® 7000
non−communicating thermostat and non−communicating
outdoor units. In addition, this unit has the enhance capability
of communicating with the icomfort Touch
®
thermostat and
compatible outdoor units using the Lennox RSBus protocols.
NOTE For downflow or horizontal left−hand air
discharge, certain field modifications are required.
These instructions are intended as a general guide and do
not supersede local or national codes in any way. Consult
authorities having jurisdiction before installation. Check
equipment for shipping damage; if found, immediately
report damage to the last carrier.
Installation Clearances
Cabinet
0 inch (0 mm)
To Plenum
1 inch (25 mm)
To Outlet Duct within 3 feet (914
mm)
1 inch (25 mm)
Floor
See Note #1
Service / Maintenance
See Note #2
1
Units installed on combustible floors in the down−flow position with
electric heat require optional down−flow additive base.
2 Front service access − 24 inches (610mm) minimum.
NOTE If cabinet depth is more than 24 inches (610
mm), allow a minimum of the cabinet depth plus 2 inches
(51 mm).
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.
WARNING
During blower operation, the ECM motor emits energy
that may interfere with pacemaker operation.
Interference is reduced by both the sheet metal cabinet
and distance.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during installa-
tion, maintenance, or repair will expose you to fiberglass
wool. Breathing this may cause lung cancer. (Fiberglass
wool is known to the State of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin, and
eye irritation.
To reduce exposure to this substance or for further infor-
mation, consult material safety data sheets available
from address shown below, or contact your supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
