Carrier 48PG20-28 specifications Typical Low Voltage Control Schematic

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Fig. 42 — Typical Low Voltage Control Schematic

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Contents Installation, Start-Up and Service Instructions Provide Unit Support InstallationRoof Curb Details Shipping Rail Removal Base Unit Dimensions Compressor Physical DataFan Motor and Drive Data Vertical Supply/Return Fan Motor and Drive Data Horizontal Supply/Return Alignment Hole Details Make Unit Duct ConnectionsConcentric Duct Details Install Flue Hood and Inlet HoodCondensate Drain Details Make Electrical ConnectionsField Power Wiring Connections Supply Optional Hacr Size Supply Optional Hacr Size Voltage Breaker Outdoor-Air Hood Details Outdoor-Air Hood Assembled Power Exhaust or Barometric Relief Damper Mounting Details PRE-START-UP Fan Performance 48PGD20 Vertical Supply/Return Units Fan Performance 48PGE20 Vertical Supply/Return Units 8500 940 Fan Performance 48PGF20 Vertical Supply/Return UnitsFan Performance 48PGD24 Vertical Supply/Return Units Fan Performance 48PGE24 Vertical Supply/Return Units 500 940 Fan Performance 48PGF24 Vertical Supply/Return Units10,500 Fan Performance 48PGD28 Vertical Supply/Return Units11,000 1310 11.76 1342 12.33 11,5001327 11.47 11,000 Fan Performance 48PGE28 Vertical Supply/Return Units1304 000 1309 1341 10.09 500Fan Performance 48PGF28 Vertical Supply/Return Units Fan Performance 48PGD20 Horizontal Supply and Return Units Fan Performance 48PGE20 Horizontal Supply and Return Units Fan Performance 48PGF20 Horizontal Supply and Return Units Fan Performance 48PGD24 Horizontal Supply and Return Units Fan Performance 48PGE24 Horizontal Supply and Return Units 1354 1391 000 1381 500 10,000 Fan Performance 48PGF24 Horizontal Supply and Return Units1328 10.37 1358 10.87 10,000 Fan Performance 48PGD28 Horizontal Supply and Return Units1308 1340 10.08 500 Fan Performance 48PGE28 Horizontal Supply and Return UnitsGeneral Notes for FAN Performance Data Tables Fan Performance 48PGF28 Horizontal Supply and Return UnitsOperation Air Quantity Limits Power Exhaust Fan Performance 48PG20-28Evaporator Fan Motor Specifications Evaporator Fan Motor Specifications Fan Rpm at Motor Pulley Settings Accessory/FIOP Static Pressure in. wg* 48PG20-28EconoMi$er IV Sensor Usage EconoMi$er IV Wiring Enthalpy Changeover Set Points Page Operating Sequence CO2 Sensor Standard SettingsSubcooler Operation Service Removing Heat Exchanger Ceramic LubricationEvaporator-Fan Motor Adjustment Belt Tension Adjustment Condenser-Fan Adjustment FigSensor Temperature/Resistance Values Unit Model Number PositionCharging Chart 48PG20 Gas Valve AdjustmentGas Valve Altitude Compensation Protective DevicesTypical Low Voltage Control Schematic Typical Power Schematic Typical Component Arrangement 48PG20,24 Typical Component Arrangement 48PG28 Cooling Service Analysis TroubleshootingBurners Will Not Ignite Gas Heating Service AnalysisIGC Control Heating and Cooling IGC Board LED Alarm Codes EconoMi$er IV TroubleshootingFlash FlashesLED Status Function Copyright 2005 Carrier Corporation Page Unit START-UP Checklist