YORK INTERNATIONAL
2
1. INTRODUCTION & PHYSICAL DESCRIPTION .............................. 57
1.1 General ..................................................................................... 57
1.2 Keypad & Display ...................................................................... 57
1.3 Chiller On (Auto) / Off Switch .................................................... 58
1.4 Microprocessor Board ............................................................... 58
1.5 Ancillary Circuit Boards ............................................................. 58
1.6 Current Transformers ................................................................ 59
1.7 EMS/BAS Connections ............................................................. 59
1.8 Microprocessor Board Layout ................................................... 61
1.9 Logic Section Layout ................................................................. 63
2. STATUS KEY & FAULT MESSAGES................................................ 66
2.1 General ..................................................................................... 66
2.2 General Status Messages ......................................................... 66
2.3 Anticipation Control Status Messages ...................................... 68
2.4 Chiller Fault Status Messages .................................................. 69
2.5 System Fault Status Messages................................................. 70
2.6 Printout on Fault Shutdown ....................................................... 73
3. DISPLAY KEYS & OPTION SWITCHES .......................................... 74
3.1 General ..................................................................................... 74
3.2 Chilled Liquid Temperatures Key .............................................. 74
3.3 Ambient Temperature Key......................................................... 75
3.4 System Pressures / Temperatures Keys ................................... 75
3.5 Percentage Motor Current Key ................................................. 76
3.6 Operating Hours / Start Counter Key ........................................ 76
3.7 Options Key & Dip Switch Settings ........................................... 76
4. PRINT KEYS .................................................................................... 80
4.1 General ..................................................................................... 80
4.2 Operating Data Key................................................................... 80
4.3 Operating Data Local Display Messages ............................... 80
4.4 Operating Data Remote Printout ............................................ 84
4.5 Fault History Key ....................................................................... 84
4.6 Fault History Data Local Display Messages .......................... 85
4.7 Fault History Data Remote Printout ....................................... 89
5. ENTRY KEYS ................................................................................... 91
5.1 General ..................................................................................... 91
5.2 Numerical Keypad ..................................................................... 91
5.3 Enter Key................................................................................... 91
5.4 Cancel Key ................................................................................ 91
5.5 AM / PM Key ............................................................................. 91
5.6 Advance Day Key ...................................................................... 91
6. SETPOINTS KEYS ........................................................................... 92
6.1 General ..................................................................................... 92
6.2 Chilled Liquid Temperature Control........................................... 92
6.3 Chilled Liquid Temp / Range Key .............................................. 96
6.4 Remote Reset Temp / Range Key............................................. 97
7. CLOCK KEYS ................................................................................... 98
7.1 General ..................................................................................... 98
7.2 Set Time Key ............................................................................. 98
7.3 Set Schedule / Holiday Key....................................................... 98
7.4 Manual Override Key ................................................................ 99
8. PROGRAM KEY ............................................................................... 100
8.1 General ..................................................................................... 100
8.2 Program Key User Programmable Values ............................. 101
8.3 Programming Default Values .................................................. 107
8.4 Compressor Motor Full Load Amps Data.................................. 109
8.5 Design Condensing Temperature Data ..................................... 110
TABLE OF CONTENTS
