Lennox International Inc CBWMV Removing the Bottom Panel, Leveling Bolt Installation

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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 panel has been removed, reinstall the bottom cap. See fig- ure 5.

Removing the Bottom Panel

BOTTOM CAP

SCREW

BOTTOM PANEL

Figure 5

Leveling an Upflow Unit When the side return air inlets are used in an upflow application, it may be necessary to install leveling bolts on the bottom of the air handler. Use field−supplied corrosion−resistant 5/16 inch machine bolts

(4) and nuts (8). See figure 6.

NOTE − Maximum leveling bolt length is 1−1/2 inches.

Leveling Bolt Installation

3/8 (10)

inches (mm)

AIR HANDLER FRONT

 

3/8 (10)

1−3/4 (44)

 

1−3/4 (44)

LEVELING BOLT

 

LOCATIONS

 

AIR

 

HANDLER

LEVELING BOLT

BOTTOM

 

LOCATIONS

3/8 (10)

3/8 (10)

1−3/4 (44)

1−3/4 (44)

Figure 6

1.Lay the air handler on its back and drill a 5/16 inch di- ameter hole in each corner of the air handler’s bottom. See figure 6 for the correct location of the holes. Drill

through the bottom panel and the bottom flange of the cabinet.

2.Install one bolt and two nuts into each hole. Screw the first nut onto a bolt and then insert the bolt into a hole. A flat washer may be added between the nut and the bottom of the unit.

3.Screw another nut onto the bolt on the inside of the air handler base. A flat washer may be added between the nut and the bottom of the unit.

4.Adjust the outside nut to the appropriate height and tighten the inside nut to secure the arrangement.

Horizontal Applications

The CBWMV air handler can be installed in horizontal ap- plications. Refer to Engineering Handbook for additional in- formation. Allow for clearances to combustible materials as indicated on the unit nameplate.

This air handler may be installed in either an attic or a crawlspace. Either suspend the air handler from roof raf- ters or floor joists, as shown in figure 7. The unit must be supported at both ends and beneath the blower deck to prevent sagging.

Unit Suspended in Attic or Crawlspace

1/4 IN.

RODS

DRAIN

PAN

ALLOW

SUFFICIENT

CLEARANCE

BETWEEN ROD

AND UNIT TO

REMOVE

ACCESS PANEL.

ANGLE IRON

U−CHANNELS

Figure 7

NOTE − Heavy−gauge, perforated sheet metal straps (plumbers’ straps) may be used to suspend the unit from roof rafters or ceiling joists. When suspending the unit in this manner, support must be provided for both the ends and the middle of the air handler to prevent sagging. Straps must not interfere with plenum or water piping. Securing screws should be 1/2 inch from the top edge and 1−1/2 inch from the side edge in all cases.Cooling coils and supply and return air plenums must be supported separately.

NOTE − When the air handler is installed on a platform in a crawlspace, it must be elevated enough to avoid water damage and to allow the optional evaporator coil to drain.

Horizontal and Downflow Applications

Return air can be brought in through the end of an air han- dler installed in the horizontal or downflow application. The air handler is equipped with a removable bottom panel to facilitate installation (see figure 5).

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CBWMV SERIES

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Contents Shipping & Packing List Table of ContentsIntroduction TOP View Cbwmv Unit Dimensions − inches mmCbwmv Unit Parts Description Cbwmv Unit Optional AccessoriesGeneral Cbwmv Unit Parts ArrangementApplication Installation − Setting EquipmentCbwmv Unit Service Clearances RequirementsCbwmv Multi−Positional Unit Duct SystemReturn Air Plenum Return Air Opening Guidelines Unit Suspended in Attic or Crawlspace Leveling Bolt InstallationRemoving the Bottom Panel Horizontal ApplicationsPlumbing Filter Assembly & FiltersElectrical Field Wiring Application Jumper Settings See figure Electrostatic Discharge ESD Precautions And ProceduresRemoveable Jumpers Indoor Blower Speeds Accessory Field Wiring K212Accessory Relay Field Wiring K212 Accessory Field Wiring TB66 & TB67Typical Cbwmv Wiring Freezestat Operation Blower Speed AdjustmentsBDC3 Variable Blower Control Board Factory Blower Speed Tap Settings Jumper SettingsCBWMV−36B−070 Blower Performance CBWMV−24B−040 Blower PerformanceCBWMV−60C−100 Blower Performance CBWMV−36C−090 Blower PerformanceCBWMV−60C−120 Blower Performance Initial Air PurgingAir Bleed Valve Location Repair Parts List System AdjustmentsAnnual Service Service FiltersYES Troubleshooting Continuous Fan Sequence of OperationTroubleshooting Cooling Sequence of Operation Troubleshooting Heating Sequence of Operation

CBWMV, AIR HANDLERS specifications

Lennox International Inc is a renowned leader in the heating, ventilation, and air conditioning (HVAC) industry, known for its commitment to innovation and energy efficiency. Among its impressive lineup of products, the CBWMV air handlers stand out as a reliable solution for optimal indoor climate control.

The CBWMV air handler is designed to provide efficient and effective airflow while being easy to install and maintain. One of the key features of the CBWMV model is its variable speed blower motor, which allows for precise control of airflow and temperature. This innovation not only enhances comfort levels within a space but also contributes to significant energy savings. By adjusting the speed of the motor according to the heating or cooling demand, the system operates more efficiently, reducing energy usage by up to 40% compared to conventional systems.

Another important characteristic of the CBWMV air handlers is their compatibility with a range of heating and cooling systems, including heat pumps and gas furnaces. This versatility makes them an ideal choice for residential and commercial applications alike. The unit’s compact design allows for flexible installation options, accommodating various spaces without compromising performance.

The CBWMV series is also engineered to provide superior air quality. With advanced filtration options, these air handlers can effectively remove dust, allergens, and pollutants from the air, promoting a healthier indoor environment. Many models come equipped with a MERV 16 filter, enhancing the filtration capability, and ensuring that occupants breathe cleaner air.

Durability is another hallmark of the CBWMV line. Constructed with high-quality materials, these air handlers can withstand rigorous use and environmental conditions. The units are designed to require minimal maintenance, with features that facilitate easy access for filter changes and routine servicing.

Additionally, the CBWMV series integrates seamlessly with Lennox’s smart technology solutions, allowing users to monitor and control their HVAC systems remotely. The compatibility with home automation systems ensures that users can optimize comfort settings and efficiency with ease.

In conclusion, Lennox International Inc's CBWMV air handlers offer a remarkable blend of efficiency, comfort, and innovative technology. With features that prioritize energy savings, air quality, versatility, and durability, they represent a forward-thinking choice for modern HVAC needs. Whether for residential or commercial use, these air handlers stand as a testament to Lennox's commitment to excellence in indoor climate management.
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