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

Page 20
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48VT-- A

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

741

638

547

415

---

---

---

---

---

 

 

 

 

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

898

820

738

662

536

---

---

---

---

 

 

 

 

Heating

49

54

NA

NA

NA

NA

NA

NA

NA

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

27

30

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

973

887

823

733

665

538

451

---

---

 

25 - 55oF

 

 

Heating

46

50

54

NA

NA

NA

NA

NA

NA

48VT(-,N)A30060

Medium

Red

Rise (oF)

(14 - 31oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

28

30

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1140

1064

996

915

840

758

687

564

480

 

 

 

 

Heating

39

42

45

49

53

NA

NA

NA

NA

 

 

Med-High2

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

23

25

27

29

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1202

1140

1082

1015

961

881

810

732

631

 

 

 

 

Heating

37

39

41

44

46

50

55

NA

NA

 

 

High1

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

21

22

23

24

26

28

30

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)A36060

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)A36090

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)

 

 

 

 

 

 

 

 

 

 

 

 

 

20

Image 20
Contents TABLE OF CONTENTS SAFETY CONSIDERATIONSFig. 1 - Unit 48VT-A Installation InstructionsRECEIVING AND INSTALLATION INTRODUCTIONStep 1 - Check Equipment Step 2 - Provide Unit SupportA09146 Fig. 2 - 48VT-A24-30Unit Dimensions48VT--A A09147 Fig. 3 - 48VT-A36-60Unit Dimensions48VT--A Fig. 4 - Roof Curb Dimensions 48VTSMALL CURB ROOF CURB DETAILACCESS PANELS MUST BE IN PLACE WHEN RIGGING Step 5 - Rig and Place UnitInspection Rigging/Lifting of Unit See FigStep 7 - Install Flue Hood Step 8 - Install Gas PipingStep 6 - Connect Condensate Drain Fig. 6 - Condensate TrapStep 9 - Install Duct Connections Configuring Units for Downflow Vertical DischargeFig. 7 - Sediment Trap FIRE OR EXPLOSION HAZARDTable 1 - Physical Data - Unit 48VT-A Fig. 8 - Supply and Return Duct Opening48VT--A Horizontal Duct CoversTable 1 - Physical Data - Unit 48VT-ACont’d Table 2 - Maximum Gas Flow CapacityTable 3 - Heating Inputs 48VT--AStep 10 - Install Electrical Connections Special Procedures for 208-VOperationHigh-VoltageConnections Control Voltage ConnectionsBalance Point Setting-Thermidistator Hybrid PRE-START-UPTransformer Protection ThermostatStep 3 - Start-upHeating and Make Adjust- ments START-UPStep 1 - Check for Refrigerant Leaks Step 2 - Unit Sequence of OperationAdjust Gas Input Fig. 11 - Burner AssemblyCheck Heating Control Check Gas InputLimit Switches Check Burner FlameNormal Operation Airflow and Temperature RiseStep 4 - Start-upCooling and Make Adjust- ments Rollout SwitchChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow AdjustmentsGas Heating Fan Speed Set-up Continuous Fan OperationTable 6 - Color Coding for Indoor Fan Motor Leads 48VT--AFig. 14 - Interface Fan Board IFB Table 8 - 48VT-AWet Coil Pressure Drop48VT--A Table 7 - Filter Pressure Drop Table IN. W.C48VT--A UNIT48VT--A Heating48VT--A 129548VT--A 144548VT--A 1448Fig. 15 - 208/230-1-60Wiring Diagram, Unit 48VT-A 48VT AA09209 Fig. 16 - 208/230-3-60Wiring Diagram, Unit 48VT-A48VT--A Fig. 17 - Cooling Charging Table-Subcooling 48VT--A50VT500173 REV A09099MAINTENANCE Cleaning the Blower Motor and WheelAir Filter Indoor Blower and MotorLimit Switch Induced Draft combustion air Blower AssemblyFig. 18 - Blower Housing and Flue Collector Box Fig. 19 - Unit Access PanelsElectrical Controls and Wiring Outdoor FanRefrigerant Circuit Fig. 20 - Removal of Motor and Blower WheelPressure Switches Loss of Charge SwitchHigh-PressureSwitch Gas InputPage HPS - High Pressure Switch LCS - Loss of Charge SwitchFig. 24 - Refrigerant Circuit AccuraterMetering De viceTROUBLESHOOTING START-UPCHECKLISTUNIT OPERATION AND SAFETY HAZARD Synthetic Roof Precautionary ProcedurePURONR R-410AQUICK REFERENCE GUIDE 48VT--ASYMPTOM 48VT--A48VT--A Table 12 - Troubleshooting Guide-HeatingTable 13 - Troubleshooting Guide-LEDStatus Codes Remove and Store in Job Files I. PRELIMINARY INFORMATION MODEL NOTEMPERATURES PRESSURES48VT--A Catalog No 48VT---05SIEdition Date 04/09 Replaces 48VT---04SI