Instruction/ maintenance manual of the product CBWMV Lennox International Inc.
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09/06 505,047M *2P0906* *P505047M* Page 1 E 2006 Lennox Industries Inc. Dallas, T exas, USA RET AIN THESE INSTRUCTIONS FOR FUTURE REFERENCE W ARNING 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 .
Page 2 505047 09/06 CBWMV Unit Dimensions − inches (mm) *Bottom Return Air Opening *Bottom Return Air Opening ELECTRICAL INLET (Either Side) SUPPL Y AIR OPENING AIR FLOW FRONT VIEW SIDE VIEW TOP VIE.
Page 3 CBWMV SERIES General These instructions are intended as a general guide and do not supersede local codes in any way . Consult authorities having jurisdiction before inst allation. Only qualified ser- vice technicians or installers may install and service this unit.
Page 4 505047 09/06 Requirements W ARNING Improper installation, adjustment, alteration, ser- vice or maintenance can cause personal injury , loss of life, or damage to property . Installation and service must be performed by a qualified inst aller or service agency .
Page 5 CBWMV SERIES tions with add−on cooling coils require field−fabricated tran- sitions that provide at least 6 inches of clearance for the CBWMV unit’s inlet/outlet water lines.
Page 6 505047 09/06 Return Air Opening Guidelines NOTE − Do not bring in air from the back of the unit. Return air can be brought in from the sides or bottom only .
Page 7 CBWMV SERIES Removing the Bottom Panel (bottom return or return air base configurations) Remove the two screws that secure the bottom cap to the air handler . Pivot the bottom cap down to release the bottom panel. Once the bottom p anel has been removed, reinstall the bottom cap.
Page 8 505047 09/06 Filter Assembly & Filters This unit is not equipped with a filter or rack. A field−pro- vided high−velocity filter is required for the unit to operate properly . T able 2 list s recommended filter sizes. A filter must be in place any time the unit is operating.
Page 9 CBWMV SERIES Electrostatic Discharge (ESD) - Precautions And Procedures CAUTION Elect rostatic d ischarg e c an affect e lect roni c com- ponent s. T ak e p r ecautio ns d u rin g a ir h an dler i n st al- lati on a nd s er vic e to pr otec t t he a ir ha ndler ’s e lec - tron ic c o ntrol s.
Page 10 505047 09/06 Indoor Blower Speeds 1. When the thermost at is set to F AN ON," the indoor blower will run continuously at approximately 38% of the second−st age cooling speed when there is no cool- ing or heating demand.
Page 1 1 CBWMV SERIES Figure 12 T ypical CBWMV Wiring Diagram.
Page 12 505047 09/06 Freezestat Operation IMPORT ANT Use of the freezest at feature is required in all instal- lations using CBWMV unit s. Th e CBWMV unit is equipped with a field-wired freezestat. The freezestat protect s the CBWMV system from freezing temperatures when the unit is installed in unconditioned areas.
Page 13 CBWMV SERIES Jumper Settings IMPORT ANT Before changing jumper setting, make sure the mo- tor has completely stopped. Any jumper setting change will not t ake place while the motor is run- ning. T able 4 shows the factory blower speed tap settings for CBWMV series unit s.
Page 14 505047 09/06 T able 5 CBWMV−24B−040 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External S t atic Pressure Range ; Factory Settings: Heating S peed − 2, Cooling Speed − 1, S peed Adjust − NORM; Applications with single sided inlet s will reduce CFM by approximately 4%.
Page 15 CBWMV SERIES T able 7 CBWMV−36C−090 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External S t atic Pressure Range ; Factory Settings: Heating S peed − 4, Cooling Speed − 3, S peed Adjust − NORM; Applications with single sided inlet s will reduce CFM by approximately 5%.
Page 16 505047 09/06 T able 9 CBWMV−60C−120 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External S t atic Pressure Range ; Factory Settings: Heating S peed − 4, Cooling Speed − 4, S peed Adjust − NORM; Applications with single sided inlet s will reduce CFM by approximately 5%.
Page 17 CBWMV SERIES System Adjustments Timed−ON and Timed−OFF Delays The 45−second timed−ON delay and the 30−second timed− OFF delay for heating (time that the blower operates after the heat demand has been satisfied) is not adjustable. Blower Speeds Select the blower speed by moving the pins on the variable speed control board.
Page 18 505047 09/06 W ARNING W ARNING T O SER VICE PERSONS! Electric shock hazard. When electrical power to the internal control box component s must be available for troubleshooting, a common practice is to construct a by−pass" of the door interlock switch.
Page 19 CBWMV SERIES W ARNING W ARNING T O SER VICE PERSONS! Electric shock hazard. When electrical power to the internal control box component s must be available for troubleshooting, a common practice is to construct a by−pass" of the door interlock switch.
Page 20 505047 09/06 W ARNING W ARNING T O SER VICE PERSONS! Electric shock hazard. When electrical power to the internal control box component s must be available for troubleshooting, a common practice is to construct a by−pass" of the door interlock switch.
An important point after buying a device Lennox International Inc. CBWMV (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lennox International Inc. CBWMV yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lennox International Inc. CBWMV - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lennox International Inc. CBWMV you will learn all the available features of the product, as well as information on its operation. The information that you get Lennox International Inc. CBWMV will certainly help you make a decision on the purchase.
If you already are a holder of Lennox International Inc. CBWMV, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lennox International Inc. CBWMV.
However, one of the most important roles played by the user manual is to help in solving problems with Lennox International Inc. CBWMV. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lennox International Inc. CBWMV along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
