Carrier 50PG20-28 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Download Controls, start-up, operation, service and troubleshooting instructions of Carrier 48PG20---28 Air Conditioner, Furnace for Free or View it Online on All-Guides.com.

Brand: Carrier

Category: Air Conditioner , Furnace , Gas Heater , Heating System

Type: Controls, start-up, operation, service and troubleshooting instructions

Model: Carrier 48PG20---28 , Carrier 50PG20-28 , Carrier start-up and

Pages: 112 (8.63 Mb)

Download Carrier 48PG20---28 Controls, start-up, operation, service and troubleshooting instructions

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48/50PG20-28
Single Package Rooftop Units
with COMFORTLINK TMControls
and PURON® (R-410A) Refrigerant
Controls, Start-Up, Operation, Service and
Troubleshooting Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ............................... 2
GENERAL .................................................. 2
BASIC CONTROL USAGE ................................ 2-5
ComfortLink TM Control ..................................... 2
Scrolling Marquee ......................................... 3
Accessory Navigator TM Display ............................ 3
Operation .................................................. 3
System Pilot TM ............................................. 4
CCN Tables and Display ................................... 4
Conventions Used in this Manual .......................... 4
START-UP ............................................... 6-35
Unit Preparation ........................................... 6
Compressor Mounting ..................................... 6
Refrigerant Service Ports .................................. 6
Crankcase Heater(s) ....................................... 6
Corn pressor Rotation ...................................... 6
Internal Wiring ............................................. 6
Subcooler Heat Exchanger (SHX) .......................... 6
Evaporator Fan ............................................ 6
Condenser Fans and Motors ............................... 6
Retu m-Air Filters .......................................... 6
Outdoor-Air Inlet Screens .................................. 6
Gas Heat (48PC Only) ...................................... 6
Orifice Change (48PC Only) ................................ 7
Power Supply .............................................. 7
Air Baffles ................................................. 7
Accessory Installation ..................................... 7
CONTROLS QUICK START ............................. 35,36
Thermostat Control ....................................... 35
Space Temperature Sensor Control --
Direct Wired (%55 or T-56) .............................. 35
Space Temperature Sensor Control -- CCN (T-58) ......... 35
Space Temperature Sensor Control -- CCN Linkage ...... 35
Space Humidity Control -- Humidistat .................... 35
Space Humidity Control -- Thermidistat TM ................ 35
Space Humidity Control -- Relative Humidity Sensor ..... 35
CCN Communication ...................................... 35
Accessories .............................................. 35
Service Test .............................................. 35
Control Configuration Checklist .......................... 36
Programming Operating Schedules ....................... 36
SERVICE TEST ......................................... 36-38
THIRD PARTY CONTROL ............................... 38,39
Thermostat ............................................... 38
Humidistat ................................................ 38
Humidity Sensor .......................................... 38
Remote Occupancy ....................................... 38
Fire Shutdown ............................................ 38
Alarm Output ............................................. 38
Outdoor Enthalpy ......................................... 38
lAG Switch ................................................ 39
IAQ Sensor ............................................... 39
OAQ Sensor .............................................. 39
CONTROLS OPERATION ............................... 39-52
Display Configuration ..................................... 39
Modes .................................................... 39
Unit Configuration ........................................ 39
Occupancy Determination ................................ 40
Indoor Fan ................................................ 41
Cooling ................................................... 41
THERMOSTAT (ONTROL
Page
SPA(E SENSOR CONTROL
OUTDOOR FANS
Gas Heating (48PC Units) ................................ 42
THERMOSTAT CONTROL
SPA(E SENSOR ( ONTROL
SUPPLY AIR TEMPERATURE (SAT) SENSOR
Electric Heat (50PG Units) ................................ 44
THERMOSTAT CONTROL
SPA(E SENSOR ( ONTROL
SUPPLY AIR TEMPERATURE (SAT) SENSOR
Economizer .............................................. 44
THERMOSTAT CONTROL
SPA(E SENSOR ( ONTROL
ECONOMIZER ACTUATOR ( OMMUNICATIONS
E%_OC(UPIED FREE COOLING
POWER EXHAUST
Optional Humdi-MiZer Dehumidification System ......... 45
SETTING UP THE SYSTEM
REHEAT MODE SELECTION PROCESS
REHEAT MODE DIAGNOSTIC HELP
AIR BAFFLES
indoor Air Quality ........................................ 49
Temperature Compensated Start ......................... 51
Carrier Comfort Network@ (CCN) Configuration .......... 5;
Alarm Handling ........................................... 52
TROUBLESHOOTING .................................. 52-67
Complete Unit Stoppage ................................. 52
Restart Procedure ........................................ 54
Control Module Communication .......................... 54
Alarms and Alerts ........................................ 54
VIEWING AND CLEARING UNIT ALARMS
DIAGNOSTI( ALARM (ODES AND POSSIBLE (AUSES
Cooling Troubleshooting ................................. 57
Humidi-MiZer Troubleshooting ........................... 57
Economizer Troubleshooting ............................. 57
Heating Troubleshooting ................................. 60
Phase Loss Protection ................................... 60
Thermistor Troubleshooting .............................. 61
Transducer Troubleshooting ............................. 64
Forcing Inputs and Outputs .............................. 64
MAJOR SYSTEM COMPONENTS ...................... 67-84
General ................................................... 67
Main Base Board (MBB) .................................. 67
Economizer Control Board (ECB) ........................ 67
Integrated Gas Control (IGC) Board ...................... 67
Low Voltage Terminal Strip (TB2) ......................... 67
Scrolling Marquee Display ................................ 80
Accessory Navigator TM Display ........................... 80
Carrier Comfort Network@ Interface ...................... 8O
Subcooler Heat Exchanger ............................... 80
Field-Installed Accessories ............................... 82
SPA(E TEMPERATURE SENSOR (T-55)
SPA(E TEMPERATURE SENSOR (T-56)
SPACE TEMPERATURE SENSOR (T-58)
SPA(E TEMPERATURE SENSOR AVERAGING
ECONOMIZER
POWER EXHAUST
TWO-POSITION DAMPER
INDOOR AIR QUALITY
OUTDOOR AIR QUALITY
SMOKE DETE( TORS
FILTER STATUS
FAN STATUS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No 04-53480028-01 Printed io U.SA Form 48/50PG-5T Pg 1 6-06 Replaces: 48/50PG-2T