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39L
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116 pages, 2.2 Mb
Fig. 10 — Unit Wiring Schematic, 39NX Sizes 07-21 (1
15 v
, T
ypical) (cont)
21
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
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Fig. 2 PIC Option Order Number
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LEGEND (Fig. 5-12, Table 2)
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Table 1 Input and Output Points
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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
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Field Wiring Connections
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Fig. 49 Smoke Control Option Wiring Schematic (39L)
Fig. 50 Smoke Control Option Wiring Schematic (39NX)
NC
SDA 202 0
COIL
1
COM NO
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CONTROL SYSTEM
Processor (PSIO Master) and Option (PSIO Slave) Modules (Fig. 71)
Relay (DSIO) Module (Fig. 72)
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Local Interface Device (HSIO) (Fig. 74)
Table 11 Functions and Subfunctions
CONTROL OPERATION Accessing Functions and Subfunctions
Display Functions
Table 13 Keyboard Directory
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OAVP Outside Air Velocity Pressure
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Programming Functions
Table 16 Service Conguration Ranges and Defaults
Table 16 Service Conguration Ranges and Defaults (cont)
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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.
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Example 24 Using the Schedule Function
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CONTROL OPERATING SEQUENCE Constant Volume and Variable Air Volume Units
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Constant Volume Units Only
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Variable Air Volume Units Only
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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
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UNIT TROUBLESHOOTING (cont)
or