06/11 506274−01
*2P0611* *P506274-01*
Page 1
E2011 Lennox Industries Inc.
Dallas, Texas, USA
NOTICE
A thermostat is not included and must be ordered
separately.
D The Lennox icomfort Touch thermostat must be used
in communicating applications.
D In non−communicating applications, the Lennox
ComfortSense
®
7000 thermostat may be used, as well
as other non−communicating thermostats.
In all cases, setup is critical to ensure proper system
operation.
Field wiring for both communicating and non−
communicating applications is illustrated in diagrams,
which begin on page 13.
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.
Shipping and Packing List
Check unit for shipping damage. Consult last carrier
immediately if damage is found.
Package 1 of 1 contains the following:
1 Assembled air handler unit
2 Downflow shields (if required for downflow
configuration only)
1 Drip shield (for −068 only)
INSTALLATION
INSTRUCTIONS
Dave Lennox Signature
®
Collection CBX32MV Units
MULTI−POSITION AIR HANDLER
506274−01
06/11
Supersedes 01/11
RETAIN THESE INSTRUCTIONS FOR FUTURE
REFERENCE
Table of Contents
Shipping and Packing List 1. . . . . . . . . . . . . . . . . . . . . .
Upflow/Downflow Unit Dimensions 2. . . . . . . . . . . . . .
Horizontal LH/RH Unit Dimensions 3. . . . . . . . . . . . . .
Model Number Identification 4. . . . . . . . . . . . . . . . . . . .
General 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Clearances 4. . . . . . . . . . . . . . . . . . . . . . . . .
Requirements 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Unit 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brazing Connections 9. . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Condensate Drain 11. . . . . . . . . . . . . . . . .
Inspecting and Replacing Filters 12. . . . . . . . . . . . . . . . .
Sealing the Unit 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Control Wiring 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Handler Control Button, Display and Jumpers 21. .
Target CFM Tables 25. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Unit 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Code Recall Mode 35. . . . . . . . . . . . . . . . . . . . . . . .
Indoor Blower Test 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checkout Procedures 36. . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Insulation 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT INFORMATION TO INSTALLER
A
B
D
C
TOP CAP SHIPPING BRACKET (REPLACE
SCREWS IN TOP CAP AFTER REMOVAL).
HORIZONTAL DRAIN PAN (SEE
UPFLOW APPLICATIONS ON PAGE
5 AND DOWNFLOW APPLICATIONS
ON PAGE 8 )
BLOWER HOUSING SUPPORT PAD.
REFRIGERANT LINE PLUGS (SEE BRAZING CONNECTION
ON PAGE 9] .
CHECK FOR AND REMOVE THE FOLLOWING ITEMS BEFORE OPERATING UNIT.
FOR PROPER OPERATION THE ELECTRIC HEAT (IF APPLICABLE) MUST BE
CONFIGURED (SET−UP) THROUGH THE AIR HANDLER CONTROL (AHC)
WHENEVER ELECTRIC HEAT IS INSTALLED THE AHC MUST BE
MANUALLY CONFIGURED. SEE JUMPERS AND LINKS GUIDE ON
PAGE 20.
ELECTRIC HEAT SECTIONS MUST BE
CONFIGURED. IF INSTALLED SEE
PROCEDURE IN FIGURE 24 ON PAGE 30.
H
H
CONFIGURE ELECTRIC HEAT
ECB40
Litho U.S.A.
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