Carrier 50PSW036-360 Wire Electrical Connections, 50PSW Electrical Data, Min/Max Rla Lra Qty Fla

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Step 6 — Wire Electrical Connections

WARNING

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation. Install lockout tag.

CAUTION

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors. Failure to heed this warning could result in equipment damage.

All field-installed wiring, including the electrical ground, MUST comply with the National Electrical Code (NEC) as well as applicable local codes. In addition, all field wiring must conform to the Class II temperature limitations described in the NEC.

Operating voltage must be the same voltage and phase as shown in Table 3.

Refer to unit wiring diagrams Fig. 4-8 for a schematic of the field connections which must be made by the installing (or electrical) contractor.

Consult the unit wiring diagram located on the inside of the compressor access panel to ensure proper electrical hookup. The installing (or electrical) contractor must make the field connections when using field-supplied disconnect.

Make all final electrical connections with a length of flexi- ble conduit to minimize vibration and sound transmission to the building.

POWER CONNECTION — Line voltage connection is made by connecting incoming line voltage wires to L1, L2, and L3 on the power distribution block.

SUPPLY VOLTAGE — Operating voltage to unit must be within voltage range indicated on unit nameplate.

Voltages between phases must be balanced within 2%. Use the following formula to determine the percentage voltage imbalance:

% Voltage Imbalance

= 100 x

max voltage deviation from average voltage

 

average voltage

Example: Supply voltage is 380-3-50.

AB = 372 volts

BC = 376 volts

AC = 384 volts

Average Voltage =

372 + 376 + 384

3

 

= 1132 3

= 377

Determine maximum deviation from average voltage:

(AB) 372 – 377 = 5 v (BC) 376 – 377 = 1 v (AC) 384 – 377 = 7 v

Maximum deviation is 7 v. Determine percent voltage imbalance.

% Voltage Imbalance =

100 x

 

7

 

377

=

1.86%

 

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electri- cal components.

NOTE: If more than 2% voltage imbalance is present, contact local electric utility.

Table 3 — 50PSW Electrical Data

50PSW UNIT

VOLTAGE

 

VOLTAGE RANGE

COMPRESSOR

 

TOTAL

MCA

MOCP*

 

SIZE

(V-Ph-Hz)

 

MIN/MAX

RLA

LRA

 

QTY

FLA

 

 

 

 

 

 

036

220/240-1-50

 

198/264

13.5

67

 

1

13.5

16.9

30

 

380/420-3-50

 

342/462

5.4

38

 

1

5.4

6.8

15

 

 

 

 

 

060

220/240-1-50

 

198/264

24.5

153

 

1

24.5

30.6

50

 

380/420-3-50

 

342/462

9.6

74

 

1

9.6

12.0

20

 

 

 

 

 

120

220/240-1-50

 

198/264

24.5

153

 

2

49.0

55.1

80

 

380/420-3-50

 

342/462

9.6

74

 

2

19.2

21.6

30

 

 

 

 

 

180

220/240-1-50

 

198/264

44.9

273

 

1

44.9

56.1

100

 

380/420-3-50

 

342/462

18.6

118

 

1

18.6

23.3

40

 

 

 

 

 

360

220/240-1-50

 

198/264

44.9

273

 

2

89.8

101.0

125

 

380/420-3-50

 

342/462

18.6

118

 

2

37.2

46.6

60

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

FLA

— Full Load Amps

 

 

 

 

 

 

 

 

HACR — Heating, Air Conditioning, and Refrigeration

 

 

 

 

 

 

 

LRA — Locked Rotor Amps

 

 

 

 

 

 

 

 

MCA — Minimum Circuit Amps

 

 

 

 

 

 

 

 

MOCP — Minimum Overcurrent Protection

 

 

 

 

 

 

 

 

RLA

— Rated Load Amps

 

 

 

 

 

 

 

 

*Time-delay fuse or HACR circuit breaker.

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Contents Safety Considerations ContentsGeneral Installation50PSW Unit Physical Data HWG Unit Size Electric Access PlugsOverall Cabinet 50PSW50PSW180,360 Unit Teflon* tape thread sealant is recommended to minimize Condition Closed Open Loop and Recirculating Well Water Quality GuidelinesRECIRCULATING† 50PSW Electrical Data Wire Electrical ConnectionsMIN/MAX RLA LRA QTY FLA LED FP1FP2 JW1Hpws AstatComp DTSJumper Wire for Alarm Field Low Voltage Wiring Alarm Relay Contacts Motor SwitchCompressor Field Wiring Terminal Block Compressor Contactor Hot Water Generator Field Line Voltage WiringTypical Aquazone 50PSW360 Deluxe D Control Wiring, 3-Phase PRE-START-UP Wire Low Voltage ConnectionsAccessory DIP Switch Position Relay Options Complete C Control Jumper Settings See FigDeluxe D Control Jumper Settings See Fig DIP Switch Block S2 Accessory 1 Relay OptionsUnit Start-Up DIP Switch Block S2 Accessory 2 Relay OptionsSTART-UP Operating Limits See TableUnit Size Heat Exchanger Pressure DropSystem Test OperationUnits with Aquazone Complete C Control Units with Aquazone Deluxe D ControlAquazone Deluxe D Control LED Indica Complete C Control LED Code Fault DescriptionsLED Status Description Alarm Relay Operation LED Fault Description CodeDescription Status LED Test LED ServiceESD Refrigerant Charging TroubleshootingFP1 and FP2 Thermistor Location Fault Heating Cooling Possible Cause Solution TroubleshootingCopyright 2010 Carrier Corporation II. START-UP 50PSW START-UP ChecklistHTG Heating and Cooling Cycle AnalysisDescription Heating Cooling CLG

50PSW036-360 specifications

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