Carrier 39L - Manual

Installation, Operation, and
Start-Up Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
Service Area Requirements . . . . . . . . . . . . . . . . . . . 2
Remote Control Box Option . . . . . . . . . . . . . . . . . . 2
• REMOTE CONTROL BOX CONDENSATE
PREVENTION
Make Electrical Connections . . . . . . . . . . . . . . . . . . 3
Variable Frequency Drives . . . . . . . . . . . . . . . . . . . 38
Water Valve Assemblies . . . . . . . . . . . . . . . . . . . . . 38
• VALVE WIRING
Duct Static Pressure Probe (VAV Units) . . . . . . 39
Space Temperature Sensor . . . . . . . . . . . . . . . . . . 40
Outdoor-Air Temperature Sensor . . . . . . . . . . . . . 42
Mixed-Air Temperature Sensor . . . . . . . . . . . . . . . 42
Enthalpy Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
• CONTROL RANGES
Supply-Air Temperature Sensor . . . . . . . . . . . . . . 44
Return-Air Temperature Sensor . . . . . . . . . . . . . . 44
Heat Interlock Relay . . . . . . . . . . . . . . . . . . . . . . . . . 45
Fan Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Duct High Humidity Switch . . . . . . . . . . . . . . . . . . 45
Wall-Mounted Relative Humidity Sensor . . . . . . 46
Duct-Mounted Relative Humidity Sensor . . . . . . 47
• LOCATION FOR OUTSIDE AIR RELATIVE
HUMIDITY
• LOCATION FOR RETURN AIR RELATIVE
HUMIDITY
Mixing Box Linkage . . . . . . . . . . . . . . . . . . . . . . . . . 47
Airflow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Low-Temperature Thermostat . . . . . . . . . . . . . . . . 48
Outdoor-Air Thermostat . . . . . . . . . . . . . . . . . . . . . 48
Filter Status Switch . . . . . . . . . . . . . . . . . . . . . . . . . 49
High-Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . 49
Air Quality Sensors . . . . . . . . . . . . . . . . . . . . . . . . . 49
Constant Outside Air (OAC) Control . . . . . . . . . . 50
• PROBE INSTALLATION
• OAC CALIBRATION
• USING OAVP VALUES TO DETERMINE DUCT
AIRFLOW
• FIELD-SUPPLIED OR HIGH-VELOCITY
PRESSURE TRANSDUCERS
Field Wiring Connections . . . . . . . . . . . . . . . . . . . . 52
• REMOTE LOCAL INTERFACE DEVICE (HSIO)
• RETURN-AIR TEMPERATURE SENSOR,
OUTDOOR-AIR TEMPERATURE SENSOR,
ENTHALPY SWITCH, AND MIXED-AIR
TEMPERATURE SENSOR
• SPACE TEMPERATURE SENSOR (SPT)
• DAMPER ACTUATORS
• SMOKE CONTROL OPTION
• ANALOG DEVICE FOR ANALOG OUTPUT
TEMPERATURE CONTROL
• DEVICE UNDER DISCRETE OUTPUT
TEMPERATURE CONTROL
• DISCRETE OUTPUT DEVICE UNDER
TIMECLOCK CONTROL
• HUMIDIFICATION DEVICES
• AIR QUALITY SENSOR
• OUTSIDE AIR VELOCITY PRESSURE (OAVP)
SENSOR
• FAN VOLUME CONTROL
• ELECTRIC HEATER
• CARRIER COMFORT NETWORK INTERFACE
• OUTDOOR-AIR THERMOSTAT
CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 64-68
Processor (PSIO Master) and Option (PSIO Slave)
Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Relay (DSIO) Module . . . . . . . . . . . . . . . . . . . . . . . 65
Local Interface Device (HSIO) . . . . . . . . . . . . . . . 67
CONTROL OPERATION . . . . . . . . . . . . . . . . . . . 69-91
Accessing Functions and Subfunctions . . . . . 69
Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 69
• SUMMARY DISPLAY
• STATUS FUNCTION
• HISTORY FUNCTION
• TEST FUNCTION
Programming Functions . . . . . . . . . . . . . . . . . . . 81
• SERVICE FUNCTION
• SET POINT FUNCTION
• SCHEDULE FUNCTION
CONTROL OPERATING SEQUENCE . . . . . . . 92-102
Constant Volume and Variable Air
Volume Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Constant Volume Units Only . . . . . . . . . . . . . . . . 96
Variable Air Volume Units Only . . . . . . . . . . . . . 99
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103-108
Initial Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Electronic Valve Actuator Field Test . . . . . . . . 108
CONTROL LOOP CHECKOUT . . . . . . . . . . . . 108,109
To Check Operation of Analog Outputs . . . . . 108
VALVE TROUBLESHOOTING . . . . . . . . . . . . . 109-111
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
All 1 ⁄
2
-in. Through 1 1 ⁄
4
-in. Electric Hot Water/Steam
Valve Assemblies . . . . . . . . . . . . . . . . . . . . . . . 109
All 1 1 ⁄
2
-in. Through 3-in. Valve Assemblies . . 110
CONTROL MODULE
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 111,112
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Module Replacement (PSIO, DSIO) . . . . . . . . . 112
UNIT TROUBLESHOOTING . . . . . . . . . . . . . . . 113-115
METRIC CONVERSION CHART . . . . . . . . . . . . . 116
39L,NX
Central Station Air-Handling Units
With Product Integrated Controls (PIC)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 3
Tab
1b
PC 201 Catalog No. 533-913 Printed in U.S.A. Form 39L,NX-2SI Pg 1 3-96 Replaces: 39L,NX-1SI