Carrier 50PEC09-18 Wire Low Voltage Connections, Electrical Data 50PEC Units, A50-7467tf

Page 30

Table 2 — Electrical Data — 50PEC Units

50PEC

 

VOLTAGE

 

V-PH-Hz

MIN/MAX

COMPRESSOR

FAN MOTOR

TOTAL UNIT

MIN CIRCUIT

MAX

UNIT SIZE

 

CODE

 

VOLTAGE

QTY

RLA

LRA

FLA

FLA

AMPS

FUSE/HACR

 

 

 

 

 

 

1

 

115-1-60

104/126

1

8.1

46.5

0.6

8.6

10.7

15

09

 

 

3

 

208/230-1-60

197/254

1

4.5

23.0

0.4

4.9

6.0

15

 

 

 

4

 

265-1-60

239/292

1

3.1

24.0

0.4

3.5

4.3

15

 

 

 

1

 

115-1-60

104/126

1

10.6

55.8

1.0

11.6

14.3

25

12

 

 

3

 

208/230-1-60

197/254

1

5.2

24.0

0.6

5.8

7.1

15

 

 

 

4

 

265-1-60

239/292

1

4.2

25.0

0.4

4.6

5.7

15

15

 

 

3

 

208/230-1-60

197/254

1

6.1

30.0

0.8

6.9

8.4

15

 

 

4

 

265-1-60

239/292

1

4.7

28.5

0.6

5.3

6.5

15

 

 

 

 

18

 

 

3

 

208/230-1-60

197/254

1

6.8

38.0

0.7

7.5

9.2

15

 

 

4

 

265-1-60

239/292

1

6.2

29.0

0.6

6.8

8.4

15

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

FLA

Full Load Amps

 

 

 

 

 

 

 

 

 

HACR — Heating, Air Conditioning and Refrigeration

 

 

 

 

 

 

 

LRA

Locked Rotor Amps

 

 

 

 

 

 

 

 

RLA

Rated Load Amps

 

 

 

 

 

 

 

 

Step 5 — Wire Low Voltage Connections

WATER FREEZE PROTECTION — The Aquazone™ con- trol allows the field selection of source fluid freeze protection points through jumpers. The factory setting of jumper JW3 (FP1) is set for water at 30 F. In earth loop applications, jumper JW3 should be clipped to change the setting to 10 F when using antifreeze in colder earth loop applications. See Fig. 30.

a50-7467tf

AQUAZONE CONTROL (Complete C Control Shown)

Fig. 30 — Typical Aquazone Control Board

Jumper Locations

ACCESSORY CONNECTIONS — Terminal labeled A on the control is provided to control accessory devices such as water valves, electronic air cleaners, humidifiers, etc. This signal operates with the compressor terminal. See Fig. 31. Refer to the specific unit wiring schematic for details.

NOTE: The A terminal should only be used with 24-v signals

— not line voltage signals.

Terminal Strip

C

Typical

24 VAC Water

Valve

A

Fig. 31 — Typical Aquazone Accessory Wiring

WATER SOLENOID VALVES — An external solenoid valve(s) should be used on ground water installations to shut off flow to the unit when the compressor is not operating. A slow closing valve may be required to help reduce water hammer. Figure 31 shows typical wiring for a 24-vac external solenoid valve. Figures 32 and 33 illustrate typical slow closing water control valve wiring for Taco 500 Series and Taco ESP Series valves. Slow closing valves take approximately 60 sec. to open (very little water will flow before 45 sec.). Once fully open, an end switch allows the compressor to be energized (only on valves with end switches). Only relay or triac based electronic thermostats should be used with slow closing valves. When wired as shown, the slow closing valve will operate properly with the following notations:

1.The valve will remain open during a unit lockout.

2.The valve will draw approximately 25 to 35 VA through the “Y” signal of the thermostat.

IMPORTANT: Connecting a water solenoid valve can overheat the anticipators of electromechanical thermo- stats. Only use relay based electronic thermostats.

C

Y1

a50-8441

 

2

AMV

1

3

TACO VALVE

 

HEATER SWITCH

 

C

Y1

 

THERMOSTAT

 

Fig. 32 — AMV Valve Wiring

a50-8442

Fig. 33 — Taco SBV Valve Wiring

30

Image 30
Contents Contents Safety ConsiderationsInstallation General50PEC Physical Data Condensate OUTWater OUT A50-8335A50-8337 Water22.2 OD A50-8338A50-8339 Damper Opening50PEC18 Bottom Return Cabinet Dimensions Right Hand Piping 50PEC09-15 Bottom Return Cabinet Dimensions Left Hand Piping 50PEC18 Bottom Return Cabinet Dimensions Left Hand Piping 50PEC09-15 Front Return Cabinet Dimensions Right Hand Piping 50PEC18 Front Return Cabinet Dimensions Right Hand Piping 50PEC09-15 Front Return Cabinet Dimensions Left Hand Piping A50-834550PEC18 Front Return Cabinet Dimensions Left Hand Piping A50-8347 50PEC09-15 Chassis Dimensions Front Return Optional Autoflow Valve MotorizedOptional Motorized Optional FusedOptional Disconnect Box Autoflow Water Valve Optional Autoflow50PEC18 Chassis Dimensions Front Return Wire Electrical Connections Mount UnitA50-8452 09-18A50-8327.eps A50-8328 Sensor, Water Coil Freeze ProtectionNight Low Limit Switch A50-8329Return Air Sensor Blower Motor Wiring NLL PremierLink Controller Applications with Complete C Control A50-8355 A50 8354LWT 8353 A50-8380 Wshp Open ControlA50-7467tf Wire Low Voltage ConnectionsElectrical Data 50PEC Units A50-8441Recommended Thermostat Wire Sizes Field-Supplied Sensors for Wshp Open ControllerSPT Sensors Rnet Wiring Install Supply and Return PipingRnet Wiring Specifications A50-8443PRE-START-UP Temporary Connection for Flushing System PipingMin Entering Air Rated Entering Air, dry bulb/wet bulb Air and Water LimitsMin Ambient Air Rated Ambient Air Max Ambient Air Max Entering Air, dry bulb/wet bulbWater Quality Guidelines DIP Switch Block S2 Accessory 1 Relay Options Complete C Control Jumper Settings See , 18,Deluxe D Control Jumper Settings See , 20, Field Selectable InputsUnit Start-Up/Cooling DIP Switch Block S2 Accessory 2 Relay OptionsSTART-UP Operating LimitsUnit Start-Up with Wshp Open Controls BACview6 Display InterfaceCoaxial Water Pressure Drop GPMOperation Approximate Fluid Volume gal Per 100 ft of PipeAntifreeze Percentages by Volume Units with Aquazone Complete C ControlUnits with Wshp Open Multiple Protocol Page Complete C and Deluxe D Board System Test Complete C Control LED Code and Fault Descriptions Aquazone Deluxe D Control LED IndicaService Gravity Flow Method Air Coil Fan Motor Removal TroubleshootingRefrigerant Charging Replacing the Wshp Open Controller’s BatTroubleshooting Fault Heating Cooling Possible Cause SolutionUnit Does Not Operate Status Appendix a Wshp Open Screen ConfigurationAlarm Status SensorSystem Settings Appendix a Wshp Open Screen ConfigurationMaintenance ConfigurationOptimal Start ScheduleAppendix a Wshp Screen Open Configuration ServiceTest Configuration Service Point Name Password Editable Range Default LevelHigh Alarm Limit AlarmPage Page Copyright 2009 Carrier Corporation 50PEC Unit START-UP Checklist II. START-UPA50-8453 Heating Cycle AnalysisCooling Cycle Analysis A50-8454