Specifications

Table Of Contents
FORM 150.72-NM1 (908)
9
JOHNSON CONTROLS
CHECKING INPUTS AND OUTPUTS .......................................................................................................161
Digital Inputs ......................................................................................................................................161
Analog Inputs – Temperature ...........................................................................................................161
Outside Air Sensor ............................................................................................................................161
Liquid & Refrigerant Sensor Test Points ........................................................................................162
Analog Inputs – Pressure .................................................................................................................163
Digital Outputs ...................................................................................................................................164
OPTIONAL PRINTER INSTALLATION .....................................................................................................165
Parts ....................................................................................................................................................165
The following parts are required: .....................................................................................................165
Assembly and Wiring ........................................................................................................................165
Obtaining a Printout ..........................................................................................................................165
TROUBLESHOOTING ..............................................................................................................................166
SECTION 10 – MAINTENANCE ......................................................................................................................169
IMPORTANT ..............................................................................................................................................169
COMPRESSORS .......................................................................................................................................169
Oil Level check ..................................................................................................................................169
Oil Analysis ........................................................................................................................................169
CONDENSER FAN MOTORS ...................................................................................................................169
CONDENSER COILS ................................................................................................................................169
OPERATING PARAMETERS ....................................................................................................................169
ON-BOARD BATTERY BACK-UP ............................................................................................................169
PLATE AND FRAME HEAT EXCHANGER (EVAPORATOR) HEATER ...................................................169
OVERALL UNIT INSPECTION..................................................................................................................169
ISN CONTROL ..........................................................................................................................................170
Received Data (Control Data) ...........................................................................................................170
Transmitted Data ...............................................................................................................................170
ISN Operational and Fault Codes .....................................................................................................172
BACNET AND MODBUS DATA COMMUNICATION ................................................................................173
Serial Communication Analog Value Data ......................................................................................176
Serial Communication Binary Value Data .......................................................................................176
Serial Communication Analog Input Data .......................................................................................176
Serial Communication Binary Input Data ........................................................................................178
TEMPERATURE CONVERSION CHART .................................................................................................179
R410APRESSURE TEMPERATURE CHART ..........................................................................................180
TABLE OF CONTENTS (CONT’D)