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09/06 505,047M
*2P0906* *P505047M*
Page 1
E2006 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Due to higher operating pressures, CBWMV units
must not be applied to steam boiler systems.
CAUTION
Unit is designed to be used with non−potable boiler
systems only.
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.
Introduction
The multi−positional Dave Lennox Signaturet Collection
CBWMV air handler/hot water coil unit is designed to be
used with non-potable boiler systems for warm air heating.
A variety of Lennox air conditioning systems may be ap-
plied to the CBWMV unit for optional cooling.
INSTALLATION
INSTRUCTIONS
CBWMV Series Units
AIR HANDLERS
505,047M
09/06
Supersedes 02/06
Table of Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping & Packing List 1. . . . . . . . . . . . . . . . . . . . . . . .
CBWMV Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . .
General 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CBWMV Unit Parts Arrangement 3. . . . . . . . . . . . . . . .
CBWMV Unit Parts Description 3. . . . . . . . . . . . . . . . . .
CBWMV Unit Optional Accessories 3. . . . . . . . . . . . . .
Requirements 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation − Setting Equipment 4. . . . . . . . . . . . . . . . . .
Duct System 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Air Opening Guidelines 6. . . . . . . . . . . . . . . . . .
Filter Assembly & Filters 8. . . . . . . . . . . . . . . . . . . . . . .
Plumbing 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freezestat Operation 12. . . . . . . . . . . . . . . . . . . . . . . . . .
BDC3 Variable Blower Control Board 12. . . . . . . . . . . . .
Blower Speed Adjustments 12. . . . . . . . . . . . . . . . . . . . .
Initial Air System Purging 16. . . . . . . . . . . . . . . . . . . . . . .
System Adjustments 17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Annual Service 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Filters 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winterizing the CBWMV Unit 17. . . . . . . . . . . . . . . . . . . .
Repair Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting:
Continuous Fan Sequence of Operation 18. . . . . . . . . .
Cooling Sequence of Operation 19. . . . . . . . . . . . . . . . .
Heating Sequence of Operation 20. . . . . . . . . . . . . . . . .
Shipping & Packing List
1 − CBWMV Air Handler [NOTE − Includes freezestat
mounted to the manifold.]
1 − Bag assembly containing:
1 − Electrical make−up box
1 − Copper fitting
1 − Snap bushing
2 − Water line grommets
3 − Wire nuts
2−7/8" cabinet plugs
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
Litho U.S.A.