Carrier 48FP - User Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 534-738 Printed in U.S.A. Form 48/50F,J-2T Pg 1 7-99 Replaces: 48/50F,J,N-1T
Book 1 1
Tab 1a 1b
Controls Operation and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . 2
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Carrier Comfort Network System
Architecture
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PIC Rooftop Information
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Digital Air Volume (DAV) Linkage
. . . . . . . . . . . . . . . . . 4
MAJOR CONTROL COMPONENTS
. . . . . . . . . . . . . 4-8
General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• PROCESSOR MODULE NO . 1 (Standard)
• CONTROL OPTIONS MODULE
• HIGH-VOLTAGE RELAY MODULES (DSIO1 AND
DSIO2)
• KEYPAD AND DISPLAY MODULE (HSIO)
• ECONOMIZER ACTUATORS
• VARIABLE FREQUENCY DRIVES
• INLET GUIDE VANES
• MODULATING POWER EXHAUST
• THERMISTORS AND REFRIGERANT PRESSURE
TRANSDUCERS
• FAN STATUS PRESSURE SWITCH
• CHECK FILTER PRESSURE SWITCH
Optional and Accessory Control
Components
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
• SPACE TEMPERATURE SENSOR (T-55)
• SPACE TEMPERATURE SENSOR (T-56)
• RELATIVE HUMIDITY (RH) SENSORS
• INDOOR AIR QUALITY (CO
2
) SENSORS
• OUTDOOR AIR VOLUME CONTROL
• HUMIDIFIER DEVICES
• HYDRONIC COIL AND CONTROL VALVE
CONTROLS AND FUNCTIONS
. . . . . . . . . . . . . . . . . 8-34
Definitions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessing the Control System
(HSIO)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• KEYPAD AND DISPLAY MODULE (HSIO)
• STANDBY/RUN MODE
• SUMMARY DISPLAY
• ACCESSING FUNCTIONS AND SUBFUNCTIONS
• OPERATING MODE DISPLAY
• LOGON AND LOGOFF/PASSWORD
•DATA RESET
• CHANGING DISPLAY FOR METRIC UNITS
Basic System Functions
. . . . . . . . . . . . . . . . . . . . . . . . 12
•BASIC SYSTEMS
•STANDBY
• SUPPLY FAN
• COOLING
• HEATING
Service Group
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
• ALERTS AND ALARMS
• QUICK TEST
Schedules Group
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
• TIME SCHEDULES
Page
• TIMED DISCRETE OUTPUT
• TIMED OVERRIDE
•OPTIMAL START
• OPTIMAL STOP (CV Units Only)
Economizer and Power Exhaust Group
. . . . . . . . . . 20
•ECONOMIZER
• NIGHTTIME/UNOCCUPIED FREE COOLING
• MODULATING POWER EXHAUST
Smoke Control Group
. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
• PRESSURIZATION
•EVACUATION
• SMOKE PURGE
• FIRE SHUTDOWN
Special Ventilation Group
. . . . . . . . . . . . . . . . . . . . . . . 25
• INDOOR AIR QUALITY (IAQ)
• IAQ (Pre-Occupancy) PURGE
• OUTDOOR AIR CONTROL (OAC)
• IAQ/OAQ REHEAT
Dehumidification and Humidifier Group
. . . . . . . . . 28
• DEHUMIDIFICATION AND REHEAT
• HUMIDIFIER CONTROL
Supply Fan Duct Pressure and
VAV Control Group
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
• SUPPLY FAN DUCT PRESSURE CONTROL
(VAV Only)
• SUPPLY-AIR SET POINT RESET FROM
SPACE TEMPERATURE (VAV Units Only)
• SUPPLY-AIR SET POINT RESET
(External Signal)
Remote Controls Group
. . . . . . . . . . . . . . . . . . . . . . . . . 31
• REMOTE START
• SPACE TEMPERATURE OFFSET (CV Only)
Special Systems Group
. . . . . . . . . . . . . . . . . . . . . . . . . 31
• HYDRONIC HEATING
• FREEZESTAT
• LEAD/LAG OPERATION
• HEAD PRESSURE/FAN CYCLING CONTROL
(Motormaster® Head Pressure Control)
• TRANSDUCERS AND SUCTION THERMISTORS
Carrier Comfort Network (CCN) Group
. . . . . . . . . . 33
• DEMAND LIMIT
• DIGITAL AIR VOLUME (DAV)
INSTALLATION INFORMATION
. . . . . . . . . . . . . . . 34-43
Control Wiring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Smoke Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Heat Interlock Relay (HIR)
Function Wiring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Remote SASP Reset
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Remote START/OCCUPIED Control
. . . . . . . . . . . . . . 35
Timed Discrete Output
. . . . . . . . . . . . . . . . . . . . . . . . . . 41
Air Pressure Tubing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Space Temperature Sensors
. . . . . . . . . . . . . . . . . . . . 41
Humidity Sensors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
48FP,JP,NP034-074
50FB,FP,JB,JP,NB,NP034-104
Single-Package Heating/Cooling Units
With Product Integrated Controls
50/60 Hz

Carrier 48FP Specifications