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Heating System
Carrier
48PG20-28
specifications
Typical Power Schematic
Models:
48PG20-28
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Troubleshooting
Install
Charging Chart 48PG20
IGC Board LED Alarm Codes
Field Power Wiring Connections
Dimension
Belt Tension Adjustment
CO2 Sensor Standard Settings
Checklist
Service
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Fig. 43 — Typical Power Schematic
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Contents
Installation, Start-Up and Service Instructions
Installation
Provide Unit Support
Roof Curb Details
Shipping Rail Removal
Base Unit Dimensions
Physical Data
Compressor
Fan Motor and Drive Data Vertical Supply/Return
Fan Motor and Drive Data Horizontal Supply/Return
Make Unit Duct Connections
Alignment Hole Details
Install Flue Hood and Inlet Hood
Concentric Duct Details
Make Electrical Connections
Condensate Drain Details
Field 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
Fan Performance 48PGF20 Vertical Supply/Return Units
8500 940
Fan Performance 48PGD24 Vertical Supply/Return Units
Fan Performance 48PGE24 Vertical Supply/Return Units
Fan Performance 48PGF24 Vertical Supply/Return Units
500 940
11,000
Fan Performance 48PGD28 Vertical Supply/Return Units
10,500
1310 11.76 1342 12.33 11,500
1304 000
Fan Performance 48PGE28 Vertical Supply/Return Units
1327 11.47 11,000
1309 1341 10.09 500
Fan 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
Fan Performance 48PGF24 Horizontal Supply and Return Units
1354 1391 000 1381 500 10,000
Fan Performance 48PGD28 Horizontal Supply and Return Units
1328 10.37 1358 10.87 10,000
Fan Performance 48PGE28 Horizontal Supply and Return Units
1308 1340 10.08 500
Fan Performance 48PGF28 Horizontal Supply and Return Units
General Notes for FAN Performance Data Tables
Power Exhaust Fan Performance 48PG20-28
Evaporator Fan Motor Specifications
Operation Air Quantity Limits
Evaporator Fan Motor Specifications
Accessory/FIOP Static Pressure in. wg* 48PG20-28
Fan Rpm at Motor Pulley Settings
EconoMi$er IV Sensor Usage
EconoMi$er IV Wiring
Enthalpy Changeover Set Points
Page
CO2 Sensor Standard Settings
Operating Sequence
Subcooler Operation
Service
Lubrication
Removing Heat Exchanger Ceramic
Evaporator-Fan Motor Adjustment
Sensor Temperature/Resistance Values
Condenser-Fan Adjustment Fig
Belt Tension Adjustment
Unit Model Number Position
Gas Valve Adjustment
Charging Chart 48PG20
Gas Valve
Protective Devices
Altitude Compensation
Typical Low Voltage Control Schematic
Typical Power Schematic
Typical Component Arrangement 48PG20,24
Typical Component Arrangement 48PG28
Troubleshooting
Cooling Service Analysis
Gas Heating Service Analysis
Burners Will Not Ignite
IGC Control Heating and Cooling
Flash
EconoMi$er IV Troubleshooting
IGC Board LED Alarm Codes
Flashes
LED Status Function
Copyright 2005 Carrier Corporation
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Unit START-UP Checklist
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