York YCRS Series Installation, Operation And Maintenance Manual page 4

Customer Wiring Data .......................................... 27
Connection Diagram Legend and Notes ................. 28
SECTION 5 COMMISSIONING
Commissioning ...................................................... 29
Preparation ........................................................... 29
Preparation - Power Off ....................................... 29
First Time Start-up ................................................ 31
SECTION 6 UNIT OPERATION
Unit Operation ........................................................ 32
General Description .............................................. 32
Start-up ................................................................... 32
Normal Running and Cycling ................................ 32
Shutdown ................................................................ 32
SECTION 7 MICROPANEL
1. Introduction and Descriptions ................................ 33
1.1 System Switches 1-2 ...................................... 33
1.2 Internal Clock & Memory Backup Battery .... 33
1.3 Power Supply Board ...................................... 33
1.4 Input / Output Expansion Board ................... 33
1.5 Relay Output Board ....................................... 33
1.6 Circuit Breakers .............................................. 34
1.7 Current Transformers (C.T.) ........................... 34
1.8 Transformers ................................................. 34
1.9 Motor Protector Modules .............................. 34
1.10 Logic Section ................................................. 34
1.11 Remote Start / Stop ........................................ 35
1.12 Remote Current Reset .................................... 35
1.13 Remote Setpoint Reset .................................. 36
1.14 Control Panel ................................................. 37
1.15 Remote Emergency Stop Device ................... 37
1.16 Common Input Power Section
Voltage Free Contacts .................................... 37
1.17 Alarm Contacts .............................................. 37
1.18 Chilled Liquid Pump Contact ......................... 37
1.19 Run Contact ................................................... 37
1.20 Anti-Recycle Timer ........................................ 37
1.21 Anti-Coincidence Timer ................................. 38
1.22 Compressor Heater Control ............................ 38
1.23 Pumpdown (LLSV) Control ............................ 38
1.24 Lead / Lag Compressor Selection ................... 38
2. CONTROL PANEL PROGRAMMING AND
DATA ACCESS ....................................................... 39
2.1 Display and Status Keys .............................. 39
2.2 Program and Setup Keys .............................. 39
3. STATUS KEYS ......................................................... 40
3.1 General ........................................................... 40
3.2 General Status Messages .............................. 40
3.3 Unit Warnings ............................................... 41
3.4 Anticipation Control Status Messages ........ 42
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TABLE OF CONTENTS (CONT'D)
3.5 Unit Fault Status Messages .......................... 43
3.6 System Fault Status Messages .................... 44
3.7 Printout on Fault Shutdown .......................... 47
4. DISPLAY KEYS ....................................................... 48
4.1 General ........................................................... 48
4.2 Chilled Liquid Temps Key .............................. 48
4.3 System Data Keys ......................................... 48
4.4 Ambient Temp Key ........................................ 49
4.5 Motor Current Key ........................................ 49
4.6 Operating Hrs / Start Counter Key ................ 50
4.7 Options Key and Dip Switch Settings ........... 50
4.8 DIP Switch Settings ....................................... 51
4.9 Function Key ................................................. 51
5. PRINT KEYS ............................................................ 52
5.1 General ........................................................... 52
5.2 Oper Data Key ............................................... 52
5.3 Oper Data - Local Display Messages ........... 52
5.4 Oper Data - Remote Printout ......................... 54
5.5 History Key ................................................... 55
5.6 History - Local Display Messages ............... 55
5.7 History - Remote Printout ............................. 58
5.8 Local Printer Option ....................................... 59
6. ENTRY KEYS ........................................................... 61
6.1 General ........................................................... 61
6.2 Numerical Keypad ......................................... 61
6.3 Enter Key ....................................................... 61
6.4 Cancel Key .................................................... 61
6.5 Keys ...................................................... 61
7. SETPOINT KEYS AND CHILLED
LIQUID CONTROL ................................................. 62
7.1 General ........................................................... 62
7.2 Chilled Liquid Temperature Control ............... 62
7.3 Slide Valve Control ........................................ 63
7.4 Load Timers ................................................... 63
7.5 Slide Valve Position ....................................... 63
7.6 Compressor Starting and Loading Sequence 63
7.7 Compressor Loading ..................................... 64
7.8 Loading Limiting ............................................ 64
7.9 Compressor Unloading and
Shutdown Sequence ...................................... 64
7.10 Local Cooling Setpoints Key ......................... 64
7.11 Remote Cooling Setpoints Key ..................... 65
8. CLOCK KEYS .......................................................... 66
8.1 General ........................................................... 66
8.2 Set Time / Date Key ....................................... 66
8.3 Set Schedule / Holiday Key ........................... 67
8.4 Manual Override Key .................................... 68
9. PROGRAM KEYS .................................................... 69
9.1 General ........................................................... 69
9.2 User Programmable Values ............................. 69
9.3 Input /Output Display Routine ...................... 72
FORM 201.25-NM1 (302)
YORK INTERNATIONAL