Carrier 48VT(N) installation instructions 48VT--A, 1295

Page 21
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Table 10 - Dry Coil Air Delivery* - Horizontal and Downflow Discharge - Unit 48VT-A24-60 Cont

UNIT

HEATING

MOTOR

WIRE

 

 

 

EXTERNAL STATIC PRESSURE (in. W.C.)

 

 

RISE

SPEED

COLOR

 

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

 

RANGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1295

1234

1182

1126

1075

1016

955

898

857

 

 

 

 

Heating

34

36

38

39

41

44

47

49

52

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

21

22

23

24

26

27

29

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1345

1282

1235

1194

1140

1095

1027

974

921

 

 

 

 

Heating

33

35

36

37

39

41

43

46

48

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

18

19

20

21

22

23

24

25

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1505

1452

1413

1358

1323

1282

1234

1169

1130

 

25 - 55oF

 

 

Heating

30

31

31

33

34

35

36

38

39

48VT(-,N)A42060

Medium

Red

Rise (oF)

(14 - 31oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

16

17

17

18

19

19

20

21

22

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1545

1492

1449

1411

1362

1313

1278

1231

1188

 

 

 

 

Heating

29

30

31

31

33

34

35

36

37

 

 

Med-High2

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

16

17

17

17

18

19

19

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1705

1643

1607

1568

1518

1483

1448

1404

1360

 

 

 

 

Heating

26

27

28

28

29

30

31

32

33

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

14

15

15

16

16

17

17

18

18

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1295

1234

1182

1126

1075

1016

955

898

857

 

 

 

 

Heating

53

55

58

60

63

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

29

31

32

34

35

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1345

1282

1235

1194

1140

1095

1027

974

921

 

 

 

 

Heating

51

53

55

57

60

62

NA

NA

NA

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

29

31

32

33

35

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1505

1452

1413

1358

1323

1282

1234

1169

1130

 

35 - 65oF

 

 

Heating

45

47

48

50

51

53

55

58

60

48VT(-,N)A42090

Medium1

Red

Rise (oF)

(19 - 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

26

27

28

29

29

31

32

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1545

1492

1449

1411

1362

1313

1278

1231

1188

 

 

 

 

Heating

44

46

47

48

50

52

53

55

57

 

 

Med-High2

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

24

25

26

27

28

29

30

31

32

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1705

1643

1607

1568

1518

1483

1448

1404

1360

 

 

 

 

Heating

40

41

42

43

45

46

47

48

50

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

23

24

24

25

25

26

27

28

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1445

1389

1341

1281

1236

1189

1139

1072

1027

 

 

 

 

Heating

47

49

51

53

55

57

60

63

NA

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

26

27

28

29

31

32

33

35

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1678

1635

1602

1558

1513

1474

1438

1404

1349

 

 

 

 

Heating

41

42

42

44

45

46

47

48

50

 

 

Med-Low2

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

23

24

24

25

26

26

27

28

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1962

1915

1880

1843

1794

1753

1711

1675

1628

 

35 - 65oF

 

 

Heating

35

36

36

37

38

39

40

41

42

48VT(-,N)A48090

Medium

Red

Rise (oF)

(19 - 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

20

20

21

22

22

23

23

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2131

2088

2065

2013

1982

1941

1888

1860

1785

 

 

 

 

Heating

NA

NA

NA

NA

NA

35

36

37

38

 

 

Med-High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

19

20

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2461

2409

2339

2286

2192

2140

2062

1968

1874

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

35

36

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

19

20

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

48VT-- A

21

Image 21
Contents SAFETY CONSIDERATIONS TABLE OF CONTENTSFig. 1 - Unit 48VT-A Installation InstructionsINTRODUCTION RECEIVING AND INSTALLATIONStep 1 - Check Equipment Step 2 - Provide Unit SupportFig. 2 - 48VT-A24-30Unit Dimensions 48VT--AA09146 Fig. 3 - 48VT-A36-60Unit Dimensions 48VT--AA09147 48VT Fig. 4 - Roof Curb DimensionsSMALL CURB ROOF CURB DETAILStep 5 - Rig and Place Unit ACCESS PANELS MUST BE IN PLACE WHEN RIGGINGInspection Rigging/Lifting of Unit See FigStep 8 - Install Gas Piping Step 7 - Install Flue HoodStep 6 - Connect Condensate Drain Fig. 6 - Condensate TrapConfiguring Units for Downflow Vertical Discharge Step 9 - Install Duct ConnectionsFig. 7 - Sediment Trap FIRE OR EXPLOSION HAZARDFig. 8 - Supply and Return Duct Opening Table 1 - Physical Data - Unit 48VT-A48VT--A Horizontal Duct CoversTable 2 - Maximum Gas Flow Capacity Table 1 - Physical Data - Unit 48VT-ACont’dTable 3 - Heating Inputs 48VT--ASpecial Procedures for 208-VOperation Step 10 - Install Electrical ConnectionsHigh-VoltageConnections Control Voltage ConnectionsPRE-START-UP Balance Point Setting-Thermidistator HybridTransformer Protection ThermostatSTART-UP Step 3 - Start-upHeating and Make Adjust- mentsStep 1 - Check for Refrigerant Leaks Step 2 - Unit Sequence of OperationFig. 11 - Burner Assembly Adjust Gas InputCheck Heating Control Check Gas InputCheck Burner Flame Limit SwitchesNormal Operation Airflow and Temperature RiseRollout Switch Step 4 - Start-upCooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow AdjustmentsContinuous Fan Operation Gas Heating Fan Speed Set-upTable 6 - Color Coding for Indoor Fan Motor Leads 48VT--ATable 8 - 48VT-AWet Coil Pressure Drop Fig. 14 - Interface Fan Board IFB48VT--A Table 7 - Filter Pressure Drop Table IN. W.CUNIT 48VT--AHeating 48VT--A1295 48VT--A1445 48VT--A1448 48VT--A48VT A Fig. 15 - 208/230-1-60Wiring Diagram, Unit 48VT-AFig. 16 - 208/230-3-60Wiring Diagram, Unit 48VT-A 48VT--AA09209 48VT--A Fig. 17 - Cooling Charging Table-Subcooling50VT500173 REV A09099Cleaning the Blower Motor and Wheel MAINTENANCEAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchFig. 18 - Blower Housing and Flue Collector Box Fig. 19 - Unit Access PanelsOutdoor Fan Electrical Controls and WiringRefrigerant Circuit Fig. 20 - Removal of Motor and Blower WheelLoss of Charge Switch Pressure SwitchesHigh-PressureSwitch Gas InputPage LCS - Loss of Charge Switch HPS - High Pressure SwitchFig. 24 - Refrigerant Circuit AccuraterMetering De viceSTART-UPCHECKLIST TROUBLESHOOTINGUNIT OPERATION AND SAFETY HAZARD Synthetic Roof Precautionary Procedure48VT--A PURONR R-410AQUICK REFERENCE GUIDE48VT--A SYMPTOMTable 12 - Troubleshooting Guide-Heating Table 13 - Troubleshooting Guide-LEDStatus Codes48VT--A I. PRELIMINARY INFORMATION MODEL NO Remove and Store in Job FilesTEMPERATURES PRESSURESCatalog No 48VT---05SI 48VT--AEdition Date 04/09 Replaces 48VT---04SI