Table of Contents
Advertisement
Quick Links
Controls Operation and Troubleshooting
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
• HIGH-VOLTAGE RELAY MODULES (DSIO1 AND
• KEYPAD AND DISPLAY MODULE (HSIO)
• ECONOMIZER ACTUATORS
• VARIABLE FREQUENCY DRIVES
• INLET GUIDE VANES
• MODULATING POWER EXHAUST
• THERMISTORS AND REFRIGERANT PRESSURE
• FAN STATUS PRESSURE SWITCH
• CHECK FILTER PRESSURE SWITCH
Optional and Accessory Control
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
• RELATIVE HUMIDITY (RH) SENSORS
• HUMIDIFIER DEVICES
• HYDRONIC COIL AND CONTROL VALVE
CONTROLS AND FUNCTIONS . . . . . . . . . . . . . . . . . 8-34
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
(HSIO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• STANDBY/RUN MODE
• SUMMARY DISPLAY
• 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
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1
PC 111
Catalog No. 534-738
Tab 1a 1b
CONTENTS
Page
2
Printed in U.S.A.
50FB,FP,JB,JP,NB,NP034-104
Single-Package Heating/Cooling Units
With Product Integrated Controls
• TIMED DISCRETE OUTPUT
• TIMED OVERRIDE
• OPTIMAL START
• OPTIMAL STOP (CV Units Only)
Economizer and Power Exhaust Group. . . . . . . . . . 20
• ECONOMIZER
• MODULATING POWER EXHAUST
Smoke Control Group . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
• PRESSURIZATION
• EVACUATION
• SMOKE PURGE
• FIRE SHUTDOWN
Special Ventilation Group . . . . . . . . . . . . . . . . . . . . . . . 25
• IAQ (Pre-Occupancy) PURGE
• OUTDOOR AIR CONTROL (OAC)
• IAQ/OAQ REHEAT
Dehumidification and Humidifier Group . . . . . . . . . 28
• HUMIDIFIER CONTROL
• SUPPLY-AIR SET POINT RESET FROM
SPACE TEMPERATURE (VAV Units Only)
Remote Controls Group . . . . . . . . . . . . . . . . . . . . . . . . . 31
• REMOTE START
Special Systems Group . . . . . . . . . . . . . . . . . . . . . . . . . 31
• HYDRONIC HEATING
• FREEZESTAT
• LEAD/LAG OPERATION
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
Form 48/50F,J-2T
Pg 1
48FP,JP,NP034-074
50/60 Hz
Page
7-99
Replaces: 48/50F,J,N-1T
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Carrier JB
Summarization of Contents
MAJOR CONTROL COMPONENTS
General Components
Lists standard components like processor, relay, and display modules.
Optional and Accessory Control Components
Details sensors and additional modules for enhanced control.
CONTROLS AND FUNCTIONS
Basic System Functions
Covers fundamental operations like Standby, Supply Fan, Cooling, and Heating control.
Economizer and Power Exhaust Group
Details economizer operation, free cooling, and modulating power exhaust functions.
Smoke Control Group
Describes functions for pressurization, evacuation, smoke purge, and fire shutdown modes.
Special Ventilation Group
Covers Indoor Air Quality (IAQ) and Outdoor Air CFM control strategies.
Dehumidification and Humidifier Group
Explains dehumidification, reheat, and humidifier control functionalities.
Service Group
Provides access to alerts, alarms, and diagnostic tests for troubleshooting.
INSTALLATION INFORMATION
Control Wiring
Provides guidance on wiring connections for unit devices and sensors.
Remote START/UNOCCUPIED Control
Explains controlling unit occupancy mode remotely via timeclock or switch.
START-UP
Initial Check
Pre-start-up verification of unit installation and component wiring.
Set Fan Status and Check Filter Switches
Procedures for setting fan status and filter check switches.
Adjusting Set Points
SET POINT FUNCTION
Allows users to view and change unit set point values.
UNIT OPERATION
Status Function
Provides access to unit status, alarms, alerts, modes, and set points.
Alarms
Displays fault codes indicating system failures or abnormal conditions.
TROUBLESHOOTING
Checking Display Codes
Guides on interpreting unit displays and diagnostic codes.
Unit Standby
Instructions for placing the unit in standby mode for servicing.
DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSES
Detailed list of alarm codes, their causes, and troubleshooting steps.
Transducer Troubleshooting
Refrigerant Pressure Transducer Replacement and Calibration
Steps for replacing and calibrating refrigerant pressure transducers.
Service Function
Factory configuration
Allows configuration of unit size, type, options, and other factory settings.
START-UP CHECKLIST
I. PRE-START-UP
Pre-start-up checks including unit level, packing removal, and shipping bolts.
II. PRELIMINARY CHECKLIST ITEMS
Control settings and requirements before configuring the system.
CONTROL CONFIGURATION
CONSTANT VOLUME CONTROL CONFIGURATION
Steps for configuring fan mode and economizer settings for CV units.
Need help?
Do you have a question about the JB and is the answer not in the manual?
Questions and answers