Carrier 48/50AJ specifications Index, 183

161-169

Accessory control components								124
Accessory installation					7
Accessory Navigator™ display								4, 124
Airflow control during
fire-smoke modes					66
Alarm output			31
Alarms and alerts				93
Alert limit configuration						72
Auto view of run status						90
Basic control usage					3-6
Building pressure configuration 63
Building pressure control						63
Carrier Comfort Network® (CCN) System 71
CCN tables and display						5
CCN tables		148-160
Cleaning	128
ComfortLink™ controls						3
Complete unit stoppage						77
Compressor run hours display table									91
Compressor starts display table								91
Condenser-fan adjustment							132
Controls	7
Controls operation				4, 32-75
Controls quick start					27-29
Controls set point and configuration
log CL-1 to CL-5
Conventions used in this manual									3
Cool mode selection process								40
Cooling	30
Cooling control				37
Cooling mode diagnostic help								46
Crankcase heaters				7
Dehumidification and reheat								69
Demand controlled ventilation control 31
Demand limit control					31, 48
Dirty filter switch				60
Discrete switch logic configuration									74
Display configuration					74
Economizer		60
Economizer diagnostic help							63
Economizer integration with
mechanical cooling					50
Economizer operation					61
Economizer options					28
Economizer run status					90
Evacuation mode				66
Evaporator fan			7, 130, 131
Exhaust options				29
Factory-installed components								101
Fan status monitoring					59
Fans 30
Filter drier	139
Fire shutdown mode					66
Fire-smoke inputs				66
Four-inch filter replacement							132
Forcing inputs and outputs							90
Gas heat (48A only)					7
Gas valve adjustment (48A only)									132
Generics table			5
Head pressure control					49
Heat mode diagnostic help							52
Heat mode selection process								51
Heating	30
Heating control			50
Hot gas bypass			75
HVAC modes			33
Independent outputs					30
Indoor air quality control						67
Indoor air quality options						29

INDEX

Internal wiring			7
Local display tables				140-147
Lubrication		130
Main burners		139
Major system components						101-127
Mode selection			170
Mode trip helper			91
Modes	32
Multi-stage constant volume units with
mechanical thermostat					28
Multi-stage constant volume units
with space sensor				28
Power failure		132
Pressurization mode				66
Programming operating schedules							29
Refrigerant charge				132
Remote control switch input						74
Remote switch			31
Replacement parts				139
Restart procedure 77
Run status menu			90
Safety considerations				2
Scrolling marquee				4, 122
Sensor trim configuration						73
Service	128-139
Service access			128
Service analysis			77
Service test		29, 30
Service test mode logic					29
Single circuit stoppage					77
Smoke control modes					66
Smoke purge mode				66
Software version numbers
display table			91
Space temperature offset					75
Staged gas heating control						54-56
Start up	7-27
Static pressure control					57
Static pressure reset				58,59
SumZ cooling algorithm					46
Supply air reset			31
Supply fan status monitoring logic							60
System modes			33
System Pilot™ interface					5
Temperature compensated start 71
Temperature compensated start logic							71
Thermistor troubleshooting						77
Thermostat		31

Thermostatic expansion valve (TXV)						132
Third party control				31,32
Time clock configuration 75-77
Transducer troubleshooting					78
Troubleshooting			77-101
Two-stage constant volume units
with mechanical thermostat					27
Two-stage constant volume units
with space sensor				27
Unit Configuration submenu					35
Unit preparation			7
Unit setup		7
Unit staging tables				43-45
Unit start-up checklist CL-6
Unoccupied economizer free cooling						62
UPC Open controller				171-182
Variable air volume units using return
air sensor or space temperature
sensor	28
VFD control		31

VFD information

183