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Table 2. CBX25UHV‐018 Air Handler Performance (0 through 0.80 in. w.g. External Static Pressure Range)

ADJUST

Jumper

Setting

BDC3 Jumper Speed Position

HEAT Speed

First-Stage COOL Speed

Second-Stage COOL Speed

cfm

470

670

890

1080

350

470

620

760

470

675

890

1090

NORM

440

615

810

1000

350

450

560

700

435

610

815

1020

400

560

730

910

350

420

520

650

400

575

725

915

NOTES - The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.

First-stage cooling air volume is approximately 70% of the second-stage COOL speed setting.

. . . . . . . .

Continuous fan speed is approximately 50% of second-stage COOL speed setting.

. . . . . . . .

Lennox Harmony III

Zone Control Applications - Minimum air handler speed is approximately 250 cfm .

. . . . . . . .

Table 3. CBX25UHV‐024 Air Handler Performance (0 through 0.80 in. w.g. External Static Pressure Range)

ADJUST

Jumper

Setting

BDC3 Jumper Speed Positions

HEAT Speed

First-Stage COOL Speed

Second-Stage COOL Speed

cfm

470

690

900

1120

350

470

625

775

480

670

890

1125

NORM

430

640

810

1020

330

450

580

720

430

605

820

1020

410

550

720

900

300

405

505

650

390

545

740

930

NOTES - The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.

First-stage cooling air volume is approximately 70% of the second-stage COOL speed setting.

. . . . . . . .

Continuous fan speed is approximately 50% of second-stage COOL speed setting.

. . . . . . . .

Lennox Harmony III

Zone Control Applications - Minimum air handler speed is approximately 250 cfm.

. . . . . . . .

Table 4. CBX25UHV‐030 Air Handler Performance (0 through 0.80 in. w.g. External Static Pressure Range)

ADJUST

Jumper

Setting

BDC3 Jumper Speed Positions

HEAT Speed

First-Stage COOL Speed

Second-Stage COOL Speed

cfm

650

900

1100

1320

430

600

740

920

650

875

1100

1330

NORM

590

795

1000

1200

390

550

680

830

580

800

1000

1200

520

730

895

1075

340

475

620

750

500

700

900

1090

NOTES - The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.

First-stage cooling air volume is approximately 70% of the second-stage COOL speed setting.

. . . . . . . .

Continuous fan speed is approximately 50% of second-stage COOL speed setting.

. . . . . . . .

Lennox Harmony III

Zone Control Applications - Minimum air handler speed is approximately 250 cfm.

. . . . . . . .

Table 5. CBX25UHV‐036 Air Handler Performance (0 through 0.80 in. w.g. External Static Pressure Range)

ADJUST

Jumper

Setting

BDC3 Jumper Speed Positions

HEAT Speed

First-Stage COOL Speed

Second-Stage COOL Speed

cfm

880

1115

1345

1435

615

770

930

1090

880

1110

1340

1435

NORM

800

1010

1215

1425

555

695

845

990

795

1005

1215

1420

715

905

1095

1275

505

625

755

885

715

905

1090

1280

NOTES - The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.

First-stage cooling air volume is approximately 70% of the second-stage COOL speed setting.

. . . . . . . .

Continuous fan speed is approximately 50% of second-stage COOL speed setting.

. . . . . . . .

Lennox Harmony III

Zone Control Applications - Minimum air handler speed is approximately 250 cfm.

. . . . . . . .

Table 6. CBX25UHV‐042 Air Handler Performance (0 through 0.80 in. w.g. External Static Pressure Range)

ADJUST

Jumper

Setting

BDC3 Jumper Speed Positions

HEAT Speed

First-Stage COOL Speed

Second-Stage COOL Speed

cfm

1115

1345

1560

1800

800

960

1120

1265

1130

1360

1580

1800

NORM

1025

1215

1415

1630

730

870

1020

1150

1040

1240

1450

1640

925

1110

1280

1460

650

790

915

1050

950

1120

1290

1470

NOTES - The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.

First-stage cooling air volume is approximately 70% of the second-stage COOL speed setting.

. . . . . . . .

Continuous fan speed is approximately 50% of second-stage COOL speed setting.

. . . . . . . .

Lennox Harmony III

Zone Control Applications - Minimum air handler speed is approximately 450 cfm.

. . . . . . . .

Содержание CBX25UHV 10 Series

Страница 1: ...ations 29 The CBX25UHV series units are high efficiency blower coils Several models are available in sizes ranging from 1 1 2 through 5 tons The CBX25UHV is designed for HFC 410A refrigerant only CBX2...

Страница 2: ...7 3 4 451 17 432 16 1 2 419 20 3 4 527 16 406 5 1 2 140 40 1 2 1029 18 1 2 470 22 559 6 152 14 357 5 1 2 140 13 1 2 343 17 3 4 451 17 432 16 1 2 419 20 3 4 527 16 406 3 5 8 92 inches mm inches mm inch...

Страница 3: ...7 8 505 20 3 4 527 19 3 8 492 43 1092 18 1 2 470 22 559 6 152 16 406 5 1 2 140 17 432 16 1 2 419 20 3 4 527 16 406 40 1 2 1029 18 1 2 470 22 559 6 152 14 357 5 1 2 140 17 432 16 1 2 419 20 3 4 527 16...

Страница 4: ...4 9 Blower Motor Full Load Amps 3 9 3 9 3 9 3 9 SPECIFICATIONS General Data Model Number CBX25UHV 042 CBX25UHV 048 CBX25UHV 060 Nominal tonnage 3 5 4 5 Connections Suction Vapor line o d in sweat 7 8...

Страница 5: ...e external static range A particular CFM can be obtained by positioning jumpers COOL HEAT and ADJUST on the BDC3 control The jumpers are labeled 1 2 3 and 4 This indicates the selected air volume CFM...

Страница 6: ...RMAL and with their respective CFM volumes Notice that the normal adjustment setting for heat speed position 3 is 1000 CFM The adjustment setting for that position is 1100 CFM and for the adjustment s...

Страница 7: ...1100 1330 NORM 590 795 1000 1200 390 550 680 830 580 800 1000 1200 520 730 895 1075 340 475 620 750 500 700 900 1090 NOTES The effect of static pressure filter and electric heater resistance is includ...

Страница 8: ...he second stage COOL speed setting Continuous fan speed is approximately 50 of second stage COOL speed setting Lennox Harmony III Zone Control Applications Minimum air handler speed is approximately 4...

Страница 9: ...gh 60 65 70 Thermostat will try to maintain room humidity setpoint by allowing the room space to maintain a cooler room thermostat setpoint Room Thermostat Calls for First and Second Stage Cooling BAS...

Страница 10: ...50 motor ramps down to stop A B OFF OFF C D E I APPLICATION Match all major blower coil components according to Lennox recommendations failure to comply voids warranty Refer to the Product Specificat...

Страница 11: ...bank of capacitors inside the controller Wait give minutes minimum after turning off power to allow capacitors to discharge It is normal for a variable speed motor to gently rock back and forth at th...

Страница 12: ...ates the risk of applying power to the wrong pins Since there is very little blower compartment space removing the plug from the motor and the service tool plug is easier than trying to use jumpers to...

Страница 13: ...discharge applications NOTE When the unit is installed in horizontal applications a secondary drain pan is recommended Refer to local codes Units installed in a horizontal position must be sloped sli...

Страница 14: ...rom resting properly in the compartment 4 Remove the no heat seal plate in the air handler frame 5 Slide the electric heat section into the air handler Be careful that the heating elements do not rub...

Страница 15: ...ange the applicable circuit breakers orientation for right hand discharge proceed to step 2 2 Locate the one clip which is located on the right side of each breaker see figure 15 The clip secures the...

Страница 16: ...g unit and heat pump applications Figure 18 is a diagram of the air handler connections and the heater elements high voltage wiring 1 Make wiring connections as follows Heaters equipped with circuit b...

Страница 17: ...cy and air flow 3 Place the unit in the desired location and slope unit as previously mentioned Connect return and supply air plenums using sheet metal screws 4 Install units that have no return air p...

Страница 18: ...ing field modifications are required 1 Remove and set aside blower and coil access covers 2 Remove bracket s securing pan s to unit as illustrated in figures 25 and 26 REMOVE BRACKET SECURING MAIN DRA...

Страница 19: ...installed in the condensate drain lines primary and auxiliary if used Traps prevent the blower from drawing air through the drain lines into the air supply IMPORTANT A field fabricated secondary drain...

Страница 20: ...the outlet will be easily noticed by the homeowner Refer to local codes for drain trap requirements on the secondary drain line 5 Check again to ensure drain ports and drain pan are free of all debri...

Страница 21: ...ER DRAIN PAN TRAPS MUST BE DEEP ENOUGH TO OFFSET MAXIMUM STATIC DIFFERENCES GENERALLY TWO INCHES 51MM DRAIN LINE SHOULD SLOPE A MINIMUM OF ONE INCH PER 10 FEET 25MM PER 3 METERS NOTE WHEN A AIR HANDLE...

Страница 22: ...8 3 4 19 1 2 13 3 4 19 DUCT FLANGE CABINET DOOR FLANGE UNIT SIZE Figure 33 Cabinet and Duct Flange E Connecting Refrigerant Lines Refrigerant lines must be connected by a qualified technician in accor...

Страница 23: ...coil Take care to protect the cabinet and internal components as detailed in figure 34 4 To avoid damaging the rubber grommets in the cabinet while brazing slide the rubber grommets over the refriger...

Страница 24: ...INE SETS SHOULD BE ROUTED TO ALLOW FILTER ACCESSIBILITY NOTE CBX25MV SERIES UNITS USE NITROGEN OR DRY AIR AS A HOLDING CHARGE IF THERE IS NO PRESSURE WHEN THE RUBBER PLUGS ARE REMOVED CHECK THE COIL F...

Страница 25: ...B BETWEEN THE 9 O CLOCK AND 3 O CLOCK POSITIONS ON LINES AND LARGER IN DIA METER INSTALL THE SENSING BULB IN EITHER THE 4 O CLOCK OR 8 O CLOCK POSITION NEVER INSTALL THE SENSING BULB ON THE BOTTOM OF...

Страница 26: ...WARNING Electric shock hazard Can cause injury or death Unit must be grounded in accordance with national and local codes Connect ground wire to ground terminal marked GND Line voltage is present at...

Страница 27: ...rom the 240 volt terminal on the transformer to the 208 volt terminal on the transformer See figure 36 208 240 VOLT TRANSFORMER PRIMARY SECONDARY 240 Volts 208 Volts Figure 36 Converting Unit from 240...

Страница 28: ...Page 28 VI WIRING DIAGRAM Figure 37 Low Voltage Connections Variable Speed Motor Field Wiring...

Страница 29: ...ng Mode Return Duct Temperature ___________ THERMOSTAT Adjusted and Programmed Return External Static ______ ______ Total External Static ______ ______ 6 Supply Duct Temperature ___________ Temperatur...

Страница 30: ...ternal Static ______ ______ 6 6 Supply Duct Temperature ___________ Temperature Drop ___________ TEMPERATURE RISE Heating Mode Return Duct Temperature __________ Supply Duct Temperature __________ Tem...

Страница 31: ...e outdoor unit The air handler C Common terminal is connected to terminal C in the outdoor unit The contactor in the outdoor closes to bring on the compressor and outdoor fan motor Heating First Stage...

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