Carrier 48EZ(N)-A Remove and Store in Job Files, Preliminary Information Model no, Temperatures

Page 41

START-UP CHECKLIST

(Remove and Store in Job Files)

I. PRELIMINARY INFORMATION MODEL NO.:

SERIAL NO.:

DATE:

TECHNICIAN:

II. PRESTART-UP (Insert check mark in box as each item is completed)

( ) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

( ) REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS

( ) CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

( ) CHECK GAS PIPING FOR LEAKS (WHERE APPLICABLE)

( ) CHECK THAT INDOOR (EVAPORATOR) AIR FILTER IS CLEAN AND IN PLACE

( ) VERIFY THAT UNIT INSTALLATION IS LEVEL

( ) CHECK FAN WHEEL, AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS

III.START-UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS

INDOOR (EVAPORATOR) FAN AMPS

TEMPERATURES

OUTDOOR (CONDENSER) AIR TEMPERATURE

DB

RETURN-AIR TEMPERATURE

 

 

 

 

 

 

 

 

DB

 

 

 

WB

COOLING SUPPLY AIR

 

 

 

DB

 

 

WB

HEAT PUMP SUPPLY AIR__________________

 

 

 

GAS HEAT SUPPLY AIR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRESSURES

 

 

 

 

 

 

 

 

 

 

 

 

 

GAS INLET PRESSURE

 

 

IN. W.C.

 

 

 

GAS MANIFOLD PRESSURE

 

 

 

 

 

 

IN. W.C.

 

 

 

REFRIGERANT SUCTION

 

 

 

 

PSIG, SUCTION LINE TEMP*

 

REFRIGERANT DISCHARGE

 

 

 

 

 

 

 

PSIG, LIQUID TEMP{

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( ) VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS GAS HEAT TEMPERATURE RISE

TEMPERATURE RISE (See Literature) RANGE MEASURED TEMPERATURE RISE

* Measured at suction inlet to compressor

{Measured at liquid line leaving condenser.

48EZ -- A

Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231

Edition Date: 09/10

Catalog No: 48EZ---08SI

 

 

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Replaces: 48EZ--- 07SI

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Contents Safety Considerations Table of ContentsIntroduction Receiving and InstallationCheck Equipment Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Number Roof Curb DimensionsProvide Clearances Field Fabricate DuctworkRig and Place Unit InspectionInstall Gas Piping Install Flue HoodConnect Condensate Drain Rigging/Lifting of Unit See FigSediment Trap Fire or Explosion HazardConfiguring Units for Downflow Vertical Discharge Install Duct ConnectionsPhysical Data Unit 48EZ-A Heating Inputs Physical Data Unit 48EZ-A Cont’dMaximum Gas Flow Capacity Special Procedures for 208-V Operation Install Electrical ConnectionsHigh-Voltage Connections Unit Component Damage HazardPRE-START-UP Balance Point Setting-Thermidistat or Hybrid ThermostatControl Voltage Connections Transformer ProtectionSTART-UP Start-up Heating and Make Adjust- mentsCheck for Refrigerant Leaks Unit Sequence of OperationUnit Damage Hazard Adjust Gas InputCheck Gas Input Start-up Cooling and Make Adjust- ments Indoor Airflow and Airflow Adjustments Checking and Adjusting Refrigerant ChargeGas Heating Fan Speed Set-up Unit Operation HazardColor Coding for Indoor Fan Motor Leads Two Cooling Fan Speeds Set-up Dehumidification feature usedContinuous Fan Operation Range Speed Color Dry Coil Air Delivery* Horizontal Unit 48EZ-A24-60Unit Heating Rise Motor Dry Coil Air Delivery* Horizontal Discharge Unit 48EZ-A24-60 1354 1290 1226 1158 1102 1046 981 918 843 55oF Heating Rise Medium1 48EZ ---,NA48090 48EZ ---,NA48130 Unit Heating Rise Motor Wire Unit Standard CFM Scfm Size Horizontal and Downflow Filter Pressure Drop Table IN. W.CDownflow Cooling Standard CFM Scfm Economizer + Tons Cooling Standard CFM Scfm48EZ a 208/230-1-60 Ladder Wiring Diagram, Unit 48EZ-A 208/230-3-60 Connection Wiring Diagram, Unit 48EZ-A Cont. 208/230-3-60 Ladder Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Cleaning the Blower Motor and Wheel MaintenanceAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchBurner Ignition Main BurnersRefrigerant Circuit Electrical Controls and WiringOutdoor Fan Loss of Charge Switch Pressure SwitchesGas Input Indoor AirflowExplosion Hazard High-Pressure SwitchCopeland Scroll Compressor Puron Refrigerant Compressor Oil Unit Operation and Safety HazardRefrigerant System Puronr R-410A Quick Reference Guide TroubleshootingSTART-UP Checklist Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating ModeLED OFF Troubleshooting Guide-HeatingTroubleshooting Guide-LED Error Codes Remove and Store in Job Files TemperaturesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor Amps