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YORK INTERNATIONAL
FORM 100.50-NOM1 (604)
SECTION
5
UNIT SEQUENCE OF OPERATION
Compressor Staging ...................................................................................................................51
Compressor Average Run Times................................................................................................52
Supply Fan Operation ................................................................................................................52
Timeouts and Delays..................................................................................................................53
Constant Volume Sequence of Operation ..................................................................................53
Variable Air Volume Sequence of Operation .............................................................................58
Economizer Operation ...............................................................................................................63
Ventilation Option Operation .....................................................................................................64
Area and K Factor ......................................................................................................................66
Low Ambient Operation ............................................................................................................70
Controlling Excessive Supply Air Temperature (SAT)..............................................................72
Power Exhaust Operation ..........................................................................................................72
Time Clock/Scheduling..............................................................................................................75
Changeover Relay Operation.....................................................................................................75
High Pressure Unloading ...........................................................................................................75
Comfort Ventilation Operation...................................................................................................75
Hot Water Freeze Protection Using RA Operation ....................................................................76
Smoke Purge Operation .............................................................................................................76
Return Fan Operation.................................................................................................................77
Modulating Gas Heat .................................................................................................................80
Compressor Operating Controls ................................................................................................81
Refrigerant Safety Operation .....................................................................................................82
Flexsys VAV Operation..............................................................................................................82
SECTION
6
MENU NAVIGATION AND DISPLAY DESCRIPTIONS
OptiLogic Control Center ..........................................................................................................85
Navigating The Menus...............................................................................................................85
History Menu Navigation ..........................................................................................................85
“Unit Status” Navigation ...........................................................................................................85
“Operation Data” Navigation.....................................................................................................89
“Setpoints” Navigation ..............................................................................................................92
“Unit Setup” Navigation ............................................................................................................92
“Con
Þ
guration” Navigation .......................................................................................................94
“Service” Navigation .................................................................................................................95
“History” Navigation .................................................................................................................98
SECTION
7
PARAMETER DESCRIPTIONS AND OPTIONS (SETPOINTS)
Parameter Description and Options (Setpoints).......................................................................100
Status Key Parameters .............................................................................................................100
Setpoint Key Parameters..........................................................................................................100
Unit Setup Key Parameters......................................................................................................102
General Setup...........................................................................................................................102
Heat/Cool System ....................................................................................................................103
VAV System .............................................................................................................................104
Econo/Exhaust System.............................................................................................................105
Ventilation ................................................................................................................................106
Warm-Up Purge........................................................................................................................106
Con
Þ
guration Key Parameters.................................................................................................107
General.....................................................................................................................................107
Run Test ...................................................................................................................................107
Panel Test .................................................................................................................................108
Heat/Cool System ....................................................................................................................108
Excessive SAT..........................................................................................................................108
Econo/Exhaust Vent .................................................................................................................109
Service Key Parameters ...........................................................................................................110
Changing Setpoints ..................................................................................................................110
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