York YLAA0260HE - Page 9

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JOHNSON CONTROLS
FORM 150.72-NM3 (1020)
ISSUE DATE 10/05/2020
SECTION 10 – MAINTENANCE .................................................................................................................... 189
IMPORTANT .............................................................................................................................................189
COMPRESSORS .....................................................................................................................................189
Oil Level check ..................................................................................................................................189
Oil Analysis ........................................................................................................................................189
CONDENSER FAN MOTORS .................................................................................................................189
CONDENSER COILS ..............................................................................................................................189
OPERATING PARAMETERS .................................................................................................................. 189
ON-BOARD BATTERY BACK-UP .......................................................................................................... 189
PLATE AND FRAME HEAT EXCHANGER (EVAPORATOR) HEATER .............................................189
OVERALL UNIT INSPECTION ...............................................................................................................189
MICROCHANNEL COIL CLEANING .....................................................................................................190
BACNET, MODBUS AND YORKTALK 2 COMMUNICATIONS ...........................................................191
BACnet and Modbus Communications ...........................................................................................194
Communications Data Map Notes: ..................................................................................................194
YORKTALK 2 COMMUNICATIONS .......................................................................................................198
Received Data (Control Data) ...........................................................................................................198
Transmitted Data ...............................................................................................................................198
TEMPERATURE CONVERSION CHART ..............................................................................................202
R410APRESSURE TEMPERATURE CHART .......................................................................................203
TABLE OF CONTENTS (CONT’D)