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

Page 19
UNIT

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

41

47

55

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

26

31

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

898

820

738

662

536

---

---

---

---

 

 

 

 

Heating

34

37

41

46

56

NA

NA

NA

NA

 

 

Med-Low2

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

23

25

31

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

973

887

823

733

665

538

451

---

---

 

30 - 60oF

 

 

Heating

31

34

37

41

45

56

NA

NA

NA

48VT(-,N)A24040

Medium1

Red

Rise (oF)

(17 - 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

17

19

20

23

25

31

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1140

1064

996

915

840

758

687

564

480

 

 

 

 

Heating

NA

NA

30

33

36

40

44

54

NA

 

 

Med-High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

17

18

20

22

24

30

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1202

1140

1082

1015

961

881

810

732

631

 

 

 

 

Heating

NA

NA

NA

30

31

34

37

41

48

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

17

17

19

21

23

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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-Low2

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)A24060

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-High

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

741

638

547

415

---

---

---

---

---

 

 

 

 

Heating

41

47

55

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

26

31

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

898

820

738

662

536

---

---

---

---

 

 

 

 

Heating

34

37

41

46

56

NA

NA

NA

NA

 

 

Med-Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

23

25

31

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

973

887

823

733

665

538

451

---

---

 

30 - 60oF

 

 

Heating

31

34

37

41

45

56

NA

NA

NA

48VT(-,N)A30040

Medium1

Red

Rise (oF)

(17 - 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

17

19

20

23

25

31

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1140

1064

996

915

840

758

687

564

480

 

 

 

 

Heating

NA

NA

30

33

36

40

44

54

NA

 

 

Med-High2

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

17

18

20

22

24

30

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1202

1140

1082

1015

961

881

810

732

631

 

 

 

 

Heating

NA

NA

NA

30

31

34

37

41

48

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

17

17

19

21

23

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

48VT-- A

19

Image 19
Contents Installation Instructions TABLE OF CONTENTSSAFETY CONSIDERATIONS Fig. 1 - Unit 48VT-AStep 2 - Provide Unit Support RECEIVING AND INSTALLATIONINTRODUCTION Step 1 - Check Equipment48VT--A Fig. 2 - 48VT-A24-30Unit DimensionsA09146 48VT--A Fig. 3 - 48VT-A36-60Unit DimensionsA09147 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-A48VT--A Fig. 16 - 208/230-3-60Wiring Diagram, Unit 48VT-AA09209 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 SYMPTOMTable 13 - Troubleshooting Guide-LEDStatus Codes Table 12 - Troubleshooting Guide-Heating48VT--A PRESSURES Remove and Store in Job FilesI. PRELIMINARY INFORMATION MODEL NO TEMPERATURESReplaces 48VT---04SI 48VT--ACatalog No 48VT---05SI Edition Date 04/09