Lennox AIR HANDLERS - Manuals

Lennox AIR HANDLERS – Manual in PDF format online.

Manuals:

Manual

Manual Lennox AIR HANDLERS

Summary

Page 2 - FRONT VIEW

Page 2 505047 09/06 CBWMV Unit Dimensions − inches (mm) *Bottom Return Air Opening *Bottom Return Air Opening ELECTRICAL INLET(Either Side) SUPPLY AIROPENING AIR FLOW FRONT VIEW SIDE VIEW TOP VIEW A B 9/16 (14) C 3/4 (19) 3/4 (19) 28−1/2 (724) 19−7/16 (494) 23−1/2 (597) 4−1/4 (108) 40 (1016) 4 (102)...

Page 3 - CBWMV Unit; Figure 1

Page 3 CBWMV SERIES General These instructions are intended as a general guide and donot supersede local codes in any way. Consult authoritieshaving jurisdiction before installation. Only qualified ser-vice technicians or installers may install and service thisunit. CBWMV Unit Parts Arrangement CBWM...

Page 4 - Requirements; Table 1; Clearances; NOTE − Service access clearance must be maintained.; Application; WARNING; This product contains fiberglass wool.

Page 4 505047 09/06 Requirements WARNING Improper installation, adjustment, alteration, ser-vice or maintenance can cause personal injury, lossof life, or damage to property. Installation and service must be performed by aqualified installer or service agency. Installation of Lennox CBWMV unit must ...

Page 5 - Figure 2; CAUTION; The bolt and washer must be re-; Duct System; Return Air Plenum; IMPORTANT

Page 5 CBWMV SERIES tions with add−on cooling coils require field−fabricated tran-sitions that provide at least 6 inches of clearance for theCBWMV unit’s inlet/outlet water lines. See figure 2 for ex-amples. AIR FLOW AIR FLOW Figure 2 UPFLOW RIGHT HAND DISCHARGE* LEFT HAND DISCHARGE* DOWNFLOW CBWMV ...

Page 6 - Return Air Opening Guidelines; SIDE VIEW

Page 6 505047 09/06 Return Air Opening Guidelines NOTE − Do not bring in air from the back of the unit. Returnair can be brought in from the sides or bottom only. Bottom Return If the air handler is installed on a platform with bottom re-turn, make an airtight seal between the bottom of the airhandl...

Page 7 - Leveling an Upflow Unit; Cooling coils and supply

Page 7 CBWMV SERIES Removing the Bottom Panel (bottom return or returnair base configurations) Remove the two screws that secure the bottom cap to the air handler. Pivot the bottomcap down to release the bottom panel. Once the bottompanel has been removed, reinstall the bottom cap. See fig-ure 5. Re...

Page 8 - CBWMV units are installed in non-potable systems.; Electrical; USE COPPER CONDUCTORS ONLY.

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 operateproperly. Table 2 lists recommended filter sizes. A filtermust be in place any time the unit is operating. Table 2 Recommended ...

Page 9 - Removeable Jumpers; Removeable Jumper DS to Y1; Table 3; TB1 R to O; SignatureStat

Page 9 CBWMV SERIES Electrostatic Discharge (ESD) - PrecautionsAnd Procedures CAUTION Electrostatic discharge can affect electronic com-ponents. Take precautions during air handler instal-lation and service to protect the air handler’s elec-tronic controls. Precautions will help to avoid con-trol ex...

Page 10 - Indoor Blower Speeds; When the CBWMV is in the heating mode, the indoor; CBWMV Control Box

Page 10 505047 09/06 Indoor Blower Speeds 1. When the thermostat is set to FAN ON," the indoor blower will run continuously at approximately 38% ofthe second−stage cooling speed when there is no cool-ing or heating demand. 2. When the CBWMV is in the heating mode, the indoor blower will run on t...

Page 11 - Typical CBWMV Wiring Diagram

Page 11 CBWMV SERIES Figure 12 Typical CBWMV Wiring Diagram É É É É

Page 12 - Freezestat Operation; Freezestat Field Wiring; BDC3 Variable Blower Control Board; Continuous Low Blower Option; Blower Speed Adjustments; Diagnostic LEDs

Page 12 505047 09/06 Freezestat Operation IMPORTANT Use of the freezestat feature is required in all instal-lations using CBWMV units. The CBWMV unit is equipped with a field-wired freezestat.The freezestat protects the CBWMV system from freezingtemperatures when the unit is installed in uncondition...

Page 13 - Jumper Settings; Table 4; NORM; NOTE − Blower

Page 13 CBWMV SERIES Jumper Settings IMPORTANT Before changing jumper setting, make sure the mo-tor has completely stopped. Any jumper settingchange will not take place while the motor is run-ning. Table 4 shows the factory blower speed tap settings forCBWMV series units. These settings are for nomi...

Page 14 - Table 5; Table 6

Page 14 505047 09/06 Table 5 CBWMV−24B−040 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External Static Pressure Range ; Factory Settings: Heating Speed − 2, CoolingSpeed − 1, Speed Adjust − NORM; Applications with single sided inlets will reduce CFM by approximately 4%. ADJUST"...

Page 15 - Table 7; Table 8

Page 15 CBWMV SERIES Table 7 CBWMV−36C−090 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External Static Pressure Range ; Factory Settings: Heating Speed − 4, CoolingSpeed − 3, Speed Adjust − NORM; Applications with single sided inlets will reduce CFM by approximately 5%. ADJUST"...

Page 16 - Table 9; Initial Air Purging; OFF; Air Bleed Valve Location

Page 16 505047 09/06 Table 9 CBWMV−60C−120 Blower Performance 0 through 0.80 in. w.g. (0 Through 200 Pa) External Static Pressure Range ; Factory Settings: Heating Speed − 4, CoolingSpeed − 4, Speed Adjust − NORM; Applications with single sided inlets will reduce CFM by approximately 5%. ADJUST"...

Page 17 - System Adjustments; Service Filters

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 afterthe heat demand has been satisfied) is not adjustable. Blower Speeds Select the blower speed by moving the pins on the ...

Page 18 - Troubleshooting: Continuous Fan Sequence of Operation

Page 18 505047 09/06 WARNING WARNING TO SERVICE PERSONS! Electric shock hazard. When electrical power to the internalcontrol box components must be available for troubleshooting, a common practice is toconstruct a by−pass" of the door interlock switch. When such a by−pass is in place, a potentia...

Page 19 - Troubleshooting: Cooling Sequence of Operation

Page 19 CBWMV SERIES WARNING WARNING TO SERVICE PERSONS! Electric shock hazard. When electrical power to the internalcontrol box components must be available for troubleshooting, a common practice is toconstruct a by−pass" of the door interlock switch. When such a by−pass is in place, a potentia...

Page 20 - Troubleshooting: Heating Sequence of Operation

Page 20 505047 09/06 WARNING WARNING TO SERVICE PERSONS! Electric shock hazard. When electrical power to the internalcontrol box components must be available for troubleshooting, a common practice is toconstruct a by−pass" of the door interlock switch. When such a by−pass is in place, a potentia...