Carrier EK Power Exhaust Default Set Points, DIP Switch Conguration, DIP Switch Factory Settings

Page 34

Table 9 Ð Power Exhaust Default Set Points

STAGE

OFFSET

DIFFERENTIAL

OFF VOLTAGE

ON VOLTAGE

OFF STATIC PRESSURE

(in. wg)

 

 

 

 

 

1

50%

3%

6.0

6.3

0.00

2

55%

3%

6.5

6.8

0.06

3

60%

3%

7.0

7.3

0.12

4

64%

3%

7.4

7.7

0.18

 

 

 

 

 

 

Table 10 Ð DIP Switch Con®guration

SETTING

1

2

3

4

5

6

7

8

 

 

 

 

 

VAV Ð

 

 

 

 

 

VAV Ð Space Sensor

 

 

Occupied

Time Guard Override

 

 

 

 

Installed

 

 

Heat

ON

 

 

OPEN

VAV

 

Expansion

Field Test

Enabled

 

Gas Heat

Heat Pump

 

Board

ON

CV Ð

IN CONJUNCTION

Operation

 

 

 

 

 

 

CV Ð CCN or Sensors

 

 

Modulated

WITH FIELD TEST

 

 

 

 

Used

 

 

Power

Ð Set Minimum

 

 

 

 

 

 

 

Exhaust

Damper Position

 

 

 

 

 

 

 

VAV Ð

 

 

 

 

 

VAV Ð No Space Sensor

 

 

Occupied

 

 

 

 

 

 

 

Heat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Base Control

Field Test

Disabled

Time Guard Override

 

Air Conditioner

CLOSED

CV

 

CV Ð

Electric Heat

 

Board Only

OFF

OFF

Operation

 

 

 

Constant

 

 

 

 

 

 

 

 

 

 

 

CV Ð Thermostat

 

 

Volume

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

Exhaust

 

 

 

LEGEND

CCN Ð Carrier Comfort Network

CV Ð Constant Volume

VAV Ð Variable Air Volume

NOTES:

1.The OPEN side of the DIP switch is marked ``OPEN.'' When the rocker switch is on the ``OPEN'' side of the switch, the switch is OPEN.

2.The con®guration of DIP switches 2 and 5 are dependent on DIP switch 1. If DIP switch 1 is set to OPEN (VAV operation), then DIP switches 2 and 5 will con®gure VAV functions.

3.When the unit is ®eld-tested (DIP switch 4 to OPEN), the function of DIP switch 6 changes and it is used to set the minimum damper position.

Table 11 Ð DIP Switch Factory Settings

UNIT

1

2

3

4

5

6

7

8

48EJ,EW

Closed

Closed

Closed

Closed

Closed

Closed

Open

Closed

48EK,EY

Open

Closed

Closed

Closed

Closed

Closed

Open

Closed

34

Image 34
Contents Installation, Start-Up Service Instructions Field Fabricate Ductwork Instructions onUnit Leveling Tolerances Dimensions Degrees and InchesRoof Curb Sizes Unit Operating WeightSize 48EJ,EKD044 Ft-in 48EJ,EKD03848EJE038 48EJE044Base Unit Dimensions, 48EW,EY024-034 Base Unit Dimensions, 48EW,EY038-048 48EJ,EK,EW,EYD034 Unit Weight 48EJ,EK,EW,EYD02448EJ,EK,EW,EYD028 48EJ,EK,EW,EYD030 48EJ,EK,EW,EYD038Physical Data Unit 48EJ,EK,EW,EY4442/4602 4668/4828 4955/5115 Air Distribution Ð Thru-the-Bottom Combustion Fan Housing Location Unit Configuration Default Cooling Default Heating VAVField Control Remote Start/Stop Make Electrical Connections SIO CCNLED RLA LRA Electrical DataFLA LRA MCA Mocp Hacr FLA LRAFLA NECHeating, Air Conditioning Qty044 Minimum Circuit AmpsGND Ð Ground Terminal BlockDIP PEC2413 or CCN Connection Approved Shielded CablesManufacturer Cable Part no 8772RED Make Outdoor-Air Inlet AdjustmentsColor Code Recommendations 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 Building Pressure Signal Level Direct Digital Controls DIP Switch ConguraPotentiometer Signal Levels VdcDIP Switch Conguration Power Exhaust Default Set PointsDIP Switch Factory Settings Airflow 18,000 16,00017,000 19,000528 572 615 656 695 733 769 805 ESP Fan Performance Ð Power ExhaustMotor Limitations Standard Efficiency MotorsSequence of Operation Air Quantity LimitsUser Dened Set Points GAS HEATING, Variable AIR Volume VAV Units COM DEG. F ResetHIR Smoke Control Modes Device Pressurization Smoke Purge Evacuation Fire ShutdownStages Cooling Capacity Staging Table, CV Units With 2 CompressorsCompressor Lubrication Manufacturer LubricantEvaporator Fan Service and Replacement Typical Gas Heating SectionEvaporator-Fan Motor Replacement Condenser-Fan AdjustmentBelt Tension Adjustment Protective DevicesGas Valve Ifcb AHAIFC 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 IGC Control Board LED Alarms Control Board LED AlarmsTerminal no Assignment I/O Channel Designations Base Module Ð CVI/O Channel Designations Base Module Ð VAV SPTPackaged Service Training START-UP Checklist General
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EW, EY024-048, EK, 48EJ specifications

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 are cutting-edge rooftop air conditioning units designed for commercial applications. These models are renowned for their reliability, energy efficiency, and innovative technologies aimed at providing optimal indoor comfort.

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In conclusion, the Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 rooftop units are engineered to offer exceptional performance, energy efficiency, and durability. With their advanced technologies and user-friendly features, they stand out as reliable solutions for meeting diverse commercial cooling and heating needs, making them a popular choice for many businesses.