Manuals / Brands / Household Appliance / Air Conditioner / Carrier / Household Appliance / Air Conditioner

Carrier 39L - page 101

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LEGEND

OA — Outside Air

OAC — Constant Outside Air

OAVP — Outside Air Velocity Pressure

VAV — Variable Air Volume

Fig. 79 — Constant Outside Air (OAC) Control Operation

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Contents

Main Installation, Operation, and Start-Up Instructions CONTENTS 39L,NX Central Station Air-Handling Units With Product Integrated Controls (PIC) SAFETY CONSIDERATIONS GENERAL INSTALLATION Service Area Requirements Remote Control Box Option Make Electrical Connections Page Fig. 2 PIC Option Order Number Page LEGEND (Fig. 5-12, Table 2) Page Page Page Page Table 1 Input and Output Points Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Table 2 Junction Box Connections for Optional Remote Control Box V ariable-Frequency Drives W ater V alve Assemblies Duct Static Pressure Probe (V A V Units) Space T emperature Sensor (Fig. 18) NEMA National Electrical Manufacturers Association Fig. 18 Space Temperature Sensor (P/N HH51BX001) Outdoor-Air Temperature Sensor (Fig. 19) Mixed-Air T emperature Sensor Enthalpy Switch (Fig. 23) Supply-Air T emperature Sensor (Fig. 25) Return-Air T emperature Sensor (Fig. 25) Heat Interlock Relay (Fig. 27) NC Fan Relay Duct High Humidity Switch (Fig. 28) SDA 202 0 COIL Wall-Mounted Relative Humidity Sensor (Fig. 30) Duct-Mounted Relative Humidity Sensor Mixing Box Linkage Airow Switch Low-T emperature Thermostat (Fig. 36 ) Outdoor-Air Thermostat (Fig. 37) Filter Status Switch High-Pressure Switch (Fig. 38) Air Quality Sensors (Fig. 39) Constant Outside Air (OAC) Control Page Field Wiring Connections Page Page Page Fig. 49 Smoke Control Option Wiring Schematic (39L) Fig. 50 Smoke Control Option Wiring Schematic (39NX) NC SDA 202 0 COIL 1 COM NO Page Page Page Page Page CONTROL SYSTEM Processor (PSIO Master) and Option (PSIO Slave) Modules (Fig. 71) Relay (DSIO) Module (Fig. 72) Page Local Interface Device (HSIO) (Fig. 74) Table 11 Functions and Subfunctions CONTROL OPERATION Accessing Functions and Subfunctions Display Functions Table 13 Keyboard Directory Page Page OAVP Outside Air Velocity Pressure Page Page Page Page Page Page Page Programming Functions Table 16 Service Conguration Ranges and Defaults Table 16 Service Conguration Ranges and Defaults (cont) Page Page of fan tracking. See Example 13. Used to read or change factory congura- tion of humidity control. Used to read or change factory congura- tion of alarm limits. See Example 14. of analog temperature control. See Example 15. of discrete temperature control. See Example 16. Page Page Page Example 24 Using the Schedule Function Page CONTROL OPERATING SEQUENCE Constant Volume and Variable Air Volume Units Page Page Page Constant Volume Units Only Page Page Variable Air Volume Units Only Page Page Page START-UP Initial Check Quick T est Table 18 Test of Input Signals Table 18 Test of Input Signals (cont) Table 19 Test of Output Signals Table 20 Test of Output Options Using Option Module Table 21 Electric Heater Test Electronic V alve Actuator Field T est CONTROL LOOP CHECKOUT T o Check Operation of Analog Outputs VALVE TROUBLESHOOTING General -in. Through 1 All -in. Electric Hot Water/ Steam V alve Assemblies All 1 -in. Through 3-in. Valve Assemblies (See Fig. 82) CONTROL MODULE TROUBLESHOOTING General Module Replacement (PSIO, DSIO) UNIT TROUBLESHOOTING Page UNIT TROUBLESHOOTING (cont) or

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