Carrier installation instructions Physical Data Unit 50CR, Typical Installation

Page 10

50CR

Table 1—Physical Data - Unit 50CR

UNIT SIZE

024

030

036

042

 

 

048

060

NOMINAL CAPACITY (ton)

2

2--1/2

3

3--1/2

 

 

4

5

OPERATING WEIGHT (lb.)

350

350

373

440

 

 

463

499

Compressor

 

 

 

 

 

Scroll

 

 

Refrigerant (R-410A) Quantity (lb.)

7.5

8

9.5

10.8

 

 

11.5

14.0

REFRIGERANT METERING DEVICE

 

 

 

 

 

TXV

 

 

ORIFICE OD (in.)

0.035 (2)

0.035 (2)

0.038 (2)

0.038 (2)

 

0.038 (Left OD Coil)

0.042 (Left OD Coil)

 

0.046 (Right OD Coil)

0.052 (Right OD Coil)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR COIL

 

 

 

 

 

 

 

 

RowsFins/in.

221

221

221

221

 

 

221

221

Face Area (sq. ft.)

12.3

12.3

13.6

15.4

 

 

17.2

19.4

OUTDOOR FAN

 

 

 

 

 

 

 

 

Nominal Cfm

2700

2700

2800

2800

 

 

3300

3300

Diameter

22

22

22

22

 

 

22

22

Motor HP (RPM)

1/8 (825)

1/8 (825)

1/8 (825)

1/8 (825)

 

 

1/4 (1100)

1/4 (1100)

 

 

 

 

 

 

 

 

 

INDOOR COIL

 

 

 

 

 

 

 

 

RowsFins/in.

315

315

415

315

 

 

415

417

Face Area (sq. ft.)

3.7

3.7

3.7

4.7

 

 

4.7

5.7

INDOOR BLOWER

 

 

 

 

 

 

 

 

Nominal Airflow (Cfm)

 

 

 

 

 

 

 

 

Comfort

Variable based on Comfort Roll back (see User Interface instructions for more information).

Efficiency

700

875

1050

1225

 

 

1400

1750

Max

800

1000

1200

1400

 

 

1600

2000

Size (in.)

10x10

10x10

11x10

11x10

 

 

11x10

11x10

Motor HP (RPM)

1/2

1/2

3/4

3/4

 

 

3/4

1

 

 

 

 

 

 

 

 

 

HIGH-PRESSURE SWITCH (psig)

 

 

 

650 ± 15

 

 

Cutout

 

 

 

 

 

 

 

 

420 ± 25

 

 

Reset (Auto)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOSS-OF-CHARGE/LOW-PRESSURE SWITCH

 

 

 

 

 

 

 

 

(Liquid Line) (psig)

 

 

 

 

20 ± 5

 

 

Cutout

 

 

 

45 ± 10

 

 

Reset (Auto)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Return-Air Filters (in.)*

20x24x1

20x24x1

24x30x1

24x36x1

 

 

24x36x1

24x36x1

Throwaway

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Required filter sizes shown are based on the larger of the ARI

(Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft/minute

for throwaway type or 450 ft/minute for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.

 

USER

INTERFACE

RETURN

AIR

TOP COVER

FROM

POWER

SOURCE

DISCONNECT PER NEC*

FROM

GAS LINE

*NEC - NATIONAL ELECTRICAL CODE

A06091

Fig. 10 - Typical Installation

10

Image 10
Contents Installation Instructions Table of ContentsEquipment Damage Hazard Safety ConsiderationsElectrical Shock Hazard IntroductionRoof Curb for Small Cabinet Roof Curb for Large Cabinet Unit Leveling Tolerances 50CR024-036 Unit Dimensions 50CR042-060 Unit Dimensions Unit Falling Hazard Rig and Place UnitInspection Property Damage HazardRigging Bracket Under Unit Rain Lip Electrical Operation Hazard Select and Install DuctworkProvide for Condensate Disposal Typical Installation Physical Data Unit 50CRRouting Control Power Wires Routing Power Leads Into UnitConnecting Ground Lead to Ground Screw HIGH-VOLTAGE ConnectionsElectrical Data-50CR Electrical Data Legend Wiring Schematics-50CR Single Phase Wiring Schematics-50CR Three Phase Accessory Installation Line Power ConnectionsSTART-UP PRE-START-UP FIRE, EXPLOSION, Electrical Shock HazardUnit Start-Up Status Code 44, Motor Communication Fault Status Code 45, Control Board Test FaultStatus Code 37, Heater Output Sensed on When not Energized Verify Motor Winding SectionStatus Code 16, System Communication Fault Status Code 36, Heater Output not Sensed When EnergizedStatus Code 41, Blower Motor Fault Status Code 25, Invalid Motor / Model SelectionSequence of Operation Start-Up AdjustmentsCheck for Refrigerant Leaks Typical Heat Pump Operation, Cooling Mode Defrost Control Electric Heat Pressure Drop Table Small Cabinet Personal Injury and Unit Damage Hazard MaintenanceUnit Operation Hazard Outdoor Coil, Indoor Coil, and Condensate Drain Pan Air FilterIndoor Blower and Motor Outdoor FanIndoor Airflow Pressure SwitchesMetering Devices-TXV & Accurater Piston EXPLOSION, FIRE, Electrical Shock Hazard High-Pressure SwitchPersonal INJURY, Unit Operation Hazard START-UP Checklist LOSS-OF-CHARGE SwitchTroubleshooting System InformationObserve all warnings, cautions, and bold text Troubleshooting Chart Troubleshooting Chart Cont’d Head pressure too lowSTART-UP Checklist