Carrier EW I/O Channel Designations Base Module Ð CV, I/O Channel Designations Base Module Ð VAV

Page 61

Tables 24-26 show the input and output channel designations.

Table 24 Ð I/O Channel Designations Base Module Ð CV

TERMINAL NO.

ASSIGNMENT

TERMINAL NO.

 

ASSIGNMENT

T1-2

SPT (CCN) Ð 10K V Thermistor

T23-25

Compressor 2 Safety Ð DI (24 vac)

T3-4

STO (CCN) Ð 10K V Thermistor

T24-25

Outside Air Enthalpy Ð DI (24 vac)

T5-6

OAT Ð 5K V Thermistor

T26-27

Economizer Pos. Ð AO (4-20 mA)

T7-8

SAT Ð 5K V Thermistor

T28-29

Heat 1 Relay Ð DO (24 vac)

T9-10

Ð

T30-29

Heat 2 Relay Ð DO (24 vac)

T11-12

SAT Reset Ð AI (4 to 20 mA)

T31-32

CV Power Exhaust 1/Modulating Power Exhaust Ð DO (115 vac)

T13-14

Ð

T33-32

CV Power Exhaust 2 Ð DO (115 vac)

T15-16

Ð

T34-35

Condenser Fan Ð DO (115 vac)

T17-25

Y1 or Remote Start/Stop Ð DI (24 vac)

T36-35

OFC2 Ð DO (115 vac)

T18-25

Y2 Ð DI (24 vac)

T37-38

 

Ð

T19-25

W1 Ð DI (24 vac)

T39-38

 

Ð

T20-25

W2 Ð DI (24 vac)

K1

Indoor Fan Relay Ð DO (LV)

T21-25

G Ð DI (24 vac)

K2

Compr. 1 Ð DO

(HV)

T22-25

Compressor 1 Safety Ð DI (24 vac)

K3

Compr. 2 Ð DO

(HV)

 

 

 

 

 

Table 25 Ð I/O Channel Designations Base Module Ð VAV

TERMINAL NO.

ASSIGNMENT

TERMINAL NO.

ASSIGNMENT

T1-2

SPT (CCN) Ð 10K V Thermistor

T23-25

Compressor 2 Safety Ð DI (24 vac)

T3-4

RAT Ð 5K V Thermistor

T24-25

Outside Air Enthalpy Ð DI (24 vac)

T5-6

OAT Ð 5K V Thermistor

T26-27

Economizer Pos. Ð AO (4-20 mA)

T7-8

SAT Ð 5K V Thermistor

T28-29

Heat 1 Relay − DO (24 vac)

T9-10

Ð

T30-29

Heat Interlock Relay Ð DO (24 vac)

T11-12

SAT Reset Ð AI (4 to 20 mA)

T31-32

Modulated Power Exhaust Ð DO (115 vac)

T13-14

Ð

T33-32

Ð

 

T15-16

Ð

T34-35

Condenser Fan Ð DO (115 vac)

T17-25

Remote Start/Stop Ð DI (24 vac)

T36-35

OFC2 Ð DO (115 vac)

 

T18-25

Ð

T37-38

Unloader 1 Ð DO (115

vac)

T19-25

Ð

T39-38

Unloader 2 Ð DO (115

vac)

T20-25

Ð

K1

Indoor Fan Relay Ð DO (LV)

T21-25

Ð

K2

Compr. 1 (HV)

 

T22-25

Compressor 1 Safety Ð DI (24 vac)

K3

Compr. 2 Ð DO (HV)

 

Table 26 Ð I/O Channel Designations Expansion Module (Field-Installed) Ð CV and VAV

TERMINAL NO.

ASSIGNMENT

TERMINAL NO.

ASSIGNMENT

 

T1-2

Ð

T23-25

Fire Ð Evacuation Ð DI (24 vac)

 

T3-4

Ð

T24-25

Fire Ð Smoke Purge Ð DI (24 vac)

 

T5-6

Ð

T26-27

Ð

 

T7-8

Ð

T28-29

Ð

 

T9-10

Ð

T30-29

Alarm Light Indicator Ð DO (24 vac)

 

T11-12

IAQ Indoor Ð AI (4 to 20 mA)

T31-32

Power Exhaust Fire No. 1 Ð DO (115

vac)

T13-14

IAQ Outdoor Ð AI (4 to 20 mA)

T33-32

Power Exhaust Fire No. 2 Ð DO (115

vac)

T15-16

Ð

T34-35

Power Exhaust Fire No. 3 Ð DO (115

vac)

T17-25

Fan Status Ð DI (24 vac)

T36-35

Power Exhaust Fire No. 4 Ð DO (115

vac)

T18-25

Filter Status − DI (24 vac)

T37-38

Ð

 

T19-25

Field Applied Status Ð DI (24 vac)

T39-38

Ð

 

T20-25

Demand Limit Ð DI (24 vac)

K1

Ð

 

T21-25

Fire Ð Unit Shutdown Ð DI (24 vac)

K2

Ð

 

T22-25

Fire Ð Pressurization Ð DI (24 vac)

K3

Ð

 

 

LEGEND (Tables 24-26)

KV

Ð Kilo-Ohms

AI

Ð Analog Input

LV

Ð Low Voltage

AO

Ð Analog Output

OAT Ð Outdoor-Air Temperature

CCN Ð Carrier Comfort Network

OFC Ð Outdoor Fan Contactor

CV

Ð Constant Volume

RAT

Ð Return-Air Temperature

DI

Ð Direct Input

SAT

Ð Supply-Air Temperature

DO

Ð Direct Output

SPT

Ð Space Temperature

HV

Ð High Voltage

STO

Ð Space Temperature Offset

IAQ

Ð Indoor Air Quality

T

Ð Terminal

 

 

VAV

Ð Variable Air Volume

NOTE: For 4 to 20 mA signals, all even numbered terminals are negative (−) polarity, and all odd numbered terminals are positive (+) polarity.

61

Image 61
Contents Installation, Start-Up Service Instructions Instructions on Field Fabricate DuctworkDegrees and Inches Unit Leveling Tolerances DimensionsRoof Curb Sizes Unit Operating WeightSize 48EJE038 Ft-in 48EJ,EKD03848EJ,EKD044 48EJE044Base Unit Dimensions, 48EW,EY024-034 Base Unit Dimensions, 48EW,EY038-048 48EJ,EK,EW,EYD028 48EJ,EK,EW,EYD030 Unit Weight 48EJ,EK,EW,EYD02448EJ,EK,EW,EYD034 48EJ,EK,EW,EYD038Unit 48EJ,EK,EW,EY Physical Data4442/4602 4668/4828 4955/5115 Air Distribution Ð Thru-the-Bottom Combustion Fan Housing Location VAV Unit Configuration Default Cooling Default HeatingField Control Remote Start/Stop Make Electrical Connections SIO CCNLED RLA LRA Electrical DataFLA LRA MCA Mocp FLA FLA LRAHacr NEC044 QtyHeating, Air Conditioning Minimum Circuit AmpsTerminal Block GND Ð GroundPEC DIPManufacturer Cable Part no CCN Connection Approved Shielded Cables2413 or 8772Color Code Recommendations Make Outdoor-Air Inlet AdjustmentsRED WhiteAdding Seal Strip to Top of Hood Sides Adding Foam Strip to Hood Side Mounting Angle With Tabs Attached to Filter Track Assembly Psychrometric Chart for Enthalpy Control Barometric Relief Damper and Power Exhaust Mounting Details Pressure Transducer Locations START-UP Pressure Control VFD VFD Supply Air Pressure Set PointSET Point Potentiometer Signal Levels Direct Digital Controls DIP Switch ConguraBuilding Pressure Signal Level VdcDIP Switch Conguration Power Exhaust Default Set PointsDIP Switch Factory Settings Airflow 17,000 16,00018,000 19,000528 572 615 656 695 733 769 805 Motor Limitations Fan Performance Ð Power ExhaustESP Standard Efficiency MotorsAir Quantity Limits Sequence of OperationUser Dened Set Points GAS HEATING, Variable AIR Volume VAV Units COM DEG. F ResetHIR Device Pressurization Smoke Purge Evacuation Fire Shutdown Smoke Control ModesStages Cooling Capacity Staging Table, CV Units With 2 CompressorsCompressor Manufacturer Lubricant LubricationTypical Gas Heating Section Evaporator Fan Service and ReplacementCondenser-Fan Adjustment Evaporator-Fan Motor ReplacementProtective Devices Belt Tension AdjustmentGas Valve IFC AHAIfcb TranTypical Power Schematic 48EJ,EK,EW,EY024-034 208/230-3-60 Typical VAV 115-v Control Circuit Typical CV 115-v Control Circuit Typical VAV 24-v Control Circuit Typical CV 24-v Control Circuit Troubleshooting Typical Refrigerant Circuiting 48EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 48EJ,EK,EW,EY048 IGC Control Heating and Cooling Control Board LED Alarms IGC Control Board LED AlarmsI/O Channel Designations Base Module Ð VAV I/O Channel Designations Base Module Ð CVTerminal no Assignment SPTPackaged Service Training START-UP Checklist General
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