Carrier WeatherExpert 48N2 User Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480114-01 Printed in U.S.A. Form 48/50N-2T Pg 240 7-14 Replaces: 48/50N-1T
© Carrier Corporation 2014
INDEX
Accessory control components 149
Accessory installation 6
Accessory Navigator™ display 4
Actuators 32
Adjustments 155
Airflow control during
Fire/smoke modes 82
Alarm output 39
Alarms and alerts 115
Alert limit configuration 91
Auto view of run status 102
BACnet communication option 223-233
Basic control usage 4, 5
Building pressure control 80
Carrier Comfort Network
®
(CCN) 91
CCN tables and display 5, 188-207
CCN/Linkage display table 114, 115
Cleaning 158
ComfortLink controls 4
Complete unit stoppage 99
Compressor removal 173
Compressor replacement 173
Compressor run hours display table 114, 115
Compressor starts display table 114, 115
Configuring the humidifier actuator 86
Control circuit, 115 v 172
Control circuit, 24 v 172
Controls 6
Controls operation 4, 41-97
Controls quick start 27-29
Controls set point and configuration
log CL-1 to CL-7
Conventions used in this manual 5
Cool mode diagnostic help 52
Cool mode selection process 50
Cooling 32
Cooling control 46
Cooling information 112, 113
Crankcase heaters 6
Dehumidification and reheat 87
Demand limit control 39, 55
Dirty filter switch 72
Discrete switch logic configuration 93
Display configuration 94
Economizer 73
Economizer changeover select 76
Economizer configurations 27
Economizer diagnostic help 80
Economizer integration with
mechanical cooling
61
Economizer operation 76, 79
Economizer run status 112, 113
Economizer/outdoor air damper control 40
Electronic expansion vavle (EXV) 159
Evacuation mode 82
Evaporator fan 6
Exhaust configurations 28
Exhaust fan VFD configuration 95
Factory-installed components 127
Fan status monitoring 72
Fans 29
Filter drier 172
Fire shutdown mode 82
Fire-smoke inputs 82
Forcing inputs and outputs 102
Gas heat (48N only) 6, 172
Gas system adjustment (48P only) 171
Generics table 5
Head pressure control 55
Heat mode diagnostic help 63
Heat mode selection process 62
Heating 33
Heating control 61
Hot gas bypass 97
Humidification 86
Humidi-MiZer
®
system 32, 88
Humidi-MiZer troubleshooting 96
HVAC modes 42
Hydronic heating control 63
Independent outputs 29
Indoor air quality control 83
Indoor air quality configurations 28
Internal wiring 5
Liquid line service valve 172
Local display tables 174-187
Lubrication 159
Major system components 127-151
Mode selection process 221, 222
Mode trip helper 114
Modes 41
Modulating gas heat control 64
Moisture/liquid indicator 171
Motormaster control 234-237
Multi-stage constant volume and staged air
volume units with mechanical
thermostat 27
Multi-stage constant volume and staged air
volume units with space sensor 27
Optional airflow station 85
Outdoor air cfm control 79
Pre-occupancy purge 85
Pressurization mode 82
Programming operating schedules 29
Protective devices 172
Refrigerant feed components 159
Refrigeration circuits 159
Relief devices 172
Remote control switch input 96
Remote switch 39
Restart procedure 99
Run status menu 102
Safety considerations 2, 3
SCR electric heat control 64
Sensor trim configuration 93
Service 152-173
Service access 152
Service analysis 99
Service component tests 33-39
Service test 29-33
Service test mode logic 29
Set clock on VFD (if installed) 28
Single circuit stoppage 99
Smoke control modes 82
Smoke purge mode 82
Software version numbers
display table 114, 115
Space temperature offset 97
Start-up 5-26
Static pressure control 69
Static pressure reset 71
SUMZ cooling algoritm 52
Supply air reset 39
Supply fan status monitoring logic 72
Supply fan VFD configuration 95
System modes 41
System Pilot™ 5
Temperature compensated start 89
Temperature compensated start logic 90
Temperature relief devices 172
Tempering mode 69
Thermistor troubleshooting 99
Thermostat 39
Third party control 39-41
Time clock configuration 97-99
Transducer troubleshooting 102
Troubleshooting 99-127
Two-stage gas and electric heat control 63
Unit configuration (unit) submenu 44
Unit preparation 5
Unit staging tables 208-210
Unit start-up checklist CL-8
Unoccupied economizer free cooling 79
Variable air volume units using return air
sensor or space temperature sensor 27
VFD configurations 95
VFD control 39
VFD information 114, 211-220

Carrier WeatherExpert 48N2 Specifications

General

Brand	Carrier
Model	WeatherExpert 48N2
Category	Air Conditioner
Language	English