Carrier 48VT(N) installation instructions 48VT--A, 1448

Page 23
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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

1448

1362

1296

1226

1168

1108

1071

998

905

 

 

 

 

Heating

60

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

33

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1722

1675

1614

1543

1499

1442

1408

1356

1308

 

 

 

 

Heating

50

52

54

56

58

60

NA

NA

NA

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

29

30

31

32

33

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1887

1847

1783

1726

1677

1625

1578

1527

1432

 

30 - 60oF

 

 

Heating

46

47

49

50

52

53

55

57

NA

48VT(-,N)A60115

Medium2

Red

Rise (oF)

(17 - 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

26

26

27

28

29

30

31

32

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2055

2008

1958

1927

1900

1768

1685

1581

1458

 

 

 

 

Heating

42

43

44

45

46

49

52

55

60

 

 

Med-High1

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

24

25

25

25

27

29

31

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2292

2238

2158

2049

1935

1840

1732

1635

1513

 

 

 

 

Heating

38

39

40

42

45

47

50

53

57

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

21

22

22

24

25

26

28

30

32

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1448

1321

1282

1235

1192

1145

1101

1057

1011

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1722

1675

1614

1543

1499

1442

1408

1356

1308

 

 

 

 

Heating

56

57

60

62

64

NA

NA

NA

NA

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

31

32

33

35

36

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1887

1847

1783

1726

1677

1625

1578

1527

1432

 

35 - 65oF

 

 

Heating

51

52

54

56

57

59

61

63

NA

48VT(-,N)A60130

Medium2

Red

Rise (oF)

(19 - 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

29

30

31

32

33

34

35

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2055

2008

1958

1927

1900

1768

1685

1581

1458

 

 

 

 

Heating

47

48

49

50

51

54

57

61

NA

 

 

Med-High1

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

26

27

27

28

28

30

32

34

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2292

2238

2158

2049

1935

1840

1732

1635

1513

 

 

 

 

Heating

42

43

45

47

50

52

56

59

64

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

24

25

26

28

29

31

33

35

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

*Air delivery values are without air filter and are for dry coil (See 48VT ---A Wet Coil Pressure Drop table).

1 Factory ---shipped gas heating speed

2 Factory ---shipped heat pump speed NA --- Not allowed for heating speed

Note: Deduct field---supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting. Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed.

48VT-- A

23

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Contents Installation Instructions TABLE OF CONTENTSSAFETY CONSIDERATIONS Fig. 1 - Unit 48VT-AStep 2 - Provide Unit Support RECEIVING AND INSTALLATIONINTRODUCTION Step 1 - Check EquipmentA09146 Fig. 2 - 48VT-A24-30Unit Dimensions48VT--A A09147 Fig. 3 - 48VT-A36-60Unit Dimensions48VT--A ROOF CURB DETAIL Fig. 4 - Roof Curb Dimensions48VT SMALL CURBRigging/Lifting of Unit See Fig ACCESS PANELS MUST BE IN PLACE WHEN RIGGINGStep 5 - Rig and Place Unit InspectionFig. 6 - Condensate Trap Step 7 - Install Flue HoodStep 8 - Install Gas Piping Step 6 - Connect Condensate DrainFIRE OR EXPLOSION HAZARD Step 9 - Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Fig. 7 - Sediment TrapHorizontal Duct Covers Table 1 - Physical Data - Unit 48VT-AFig. 8 - Supply and Return Duct Opening 48VT--A48VT--A Table 1 - Physical Data - Unit 48VT-ACont’dTable 2 - Maximum Gas Flow Capacity Table 3 - Heating InputsControl Voltage Connections Step 10 - Install Electrical ConnectionsSpecial Procedures for 208-VOperation High-VoltageConnectionsThermostat Balance Point Setting-Thermidistator HybridPRE-START-UP Transformer ProtectionStep 2 - Unit Sequence of Operation Step 3 - Start-upHeating and Make Adjust- mentsSTART-UP Step 1 - Check for Refrigerant LeaksCheck Gas Input Adjust Gas InputFig. 11 - Burner Assembly Check Heating ControlAirflow and Temperature Rise Limit SwitchesCheck Burner Flame Normal OperationIndoor Airflow and Airflow Adjustments Step 4 - Start-upCooling and Make Adjust- mentsRollout Switch Checking and Adjusting Refrigerant Charge48VT--A Gas Heating Fan Speed Set-upContinuous Fan Operation Table 6 - Color Coding for Indoor Fan Motor LeadsTable 7 - Filter Pressure Drop Table IN. W.C Fig. 14 - Interface Fan Board IFBTable 8 - 48VT-AWet Coil Pressure Drop 48VT--AUNIT 48VT--AHeating 48VT--A1295 48VT--A1445 48VT--A1448 48VT--A48VT A Fig. 15 - 208/230-1-60Wiring Diagram, Unit 48VT-AA09209 Fig. 16 - 208/230-3-60Wiring Diagram, Unit 48VT-A48VT--A A09099 Fig. 17 - Cooling Charging Table-Subcooling48VT--A 50VT500173 REVIndoor Blower and Motor MAINTENANCECleaning the Blower Motor and Wheel Air FilterFig. 19 - Unit Access Panels Limit SwitchInduced Draft combustion air Blower Assembly Fig. 18 - Blower Housing and Flue Collector BoxFig. 20 - Removal of Motor and Blower Wheel Electrical Controls and WiringOutdoor Fan Refrigerant CircuitGas Input Pressure SwitchesLoss of Charge Switch High-PressureSwitchPage AccuraterMetering De vice HPS - High Pressure SwitchLCS - Loss of Charge Switch Fig. 24 - Refrigerant CircuitSynthetic Roof Precautionary Procedure TROUBLESHOOTINGSTART-UPCHECKLIST UNIT OPERATION AND SAFETY HAZARD48VT--A PURONR R-410AQUICK REFERENCE GUIDE48VT--A SYMPTOM48VT--A Table 12 - Troubleshooting Guide-HeatingTable 13 - Troubleshooting Guide-LEDStatus Codes PRESSURES Remove and Store in Job FilesI. PRELIMINARY INFORMATION MODEL NO TEMPERATURESReplaces 48VT---04SI 48VT--ACatalog No 48VT---05SI Edition Date 04/09