Dunham-Bush ACDS - Default Chapter; Table of Contents

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MANUAL INDEX
Description Page Description Page
1.0 INTRODUCTION .............................................. 3
1.1 Physical Specifications ....................................... 4
2.0 INSTALLATION
2.1 General ..................................................................... 6
2.2 Inspection ................................................................ 6
2.3 Rigging ..................................................................... 6
2.3.1 General ............................................................. 6
2.3.2 Rigging and Moving ......................................... 6
2.4 Space Requirements And Clearance ............... 7
2.4.1 General ............................................................. 7
2.4.2 ACDS ................................................................ 7
2.5 Foundation ............................................................ 18
2.5.1 Air Cooled Units .............................................. 18
2.6 Vibration Isolation ............................................... 18
2.7 Piping Connection .............................................. 21
2.7.1 Water Connections Chilled Water
Piping .............................................................. 21
2.7.2 Water Connections Multiple Packaged
Chillers ............................................................ 21
2.7.3 Water Quality .................................................. 23
2.8 Electrical Connections ....................................... 23
2.9 Request For Start-Up Representative ........... 23
3.0 OPERATION
3.1 General ........................................................... 24
3.2 Unit Piping ..................................................... 24
3.3 Air Cooled Package Start-Up ....................... 24
3.4 System Start-Up ............................................
24
3.5 Lubrication .................................................... 24
3.5.1 Oil Level .......................................................... 24
3.5.2 Oil Type ........................................................... 30
3.6 System Flow Rate ................................................ 30
3.7 System Control .................................................... 30
3.7.1 Capacity Control .............................................. 30
3.7.2 Solid-State operating Thermostat ................... 30
4.0 ELECTRICAL
4.1 Electrical Data ...................................................... 33
4.2 IR32 Electronic Thermostat Front Panel ...... 34
4.2.1 Typical Control Sequence With 2 Stage
Operating Thermostat At 10°C Return Water
Setpoint, 3.0°C Differential .............................. 34
4.2.2 Keypad Operation ........................................... 35
4.2.3 IR32 Electronic Thermostat Parameter List ... 35
4.2.4 IR32 Electronic Thermostat Troubleshooting .. 37
4.3 Vision 2020i Controller and Terminal ............ 38
4.3.1 DBG1 Operator Keypad .................................. 38
4.3.2 Status Reading ................................................ 39
4.3.3 Authorization ................................................... 41
4.3.4 Advanced user key and menu ......................... 41
4.3.5 Technician Key and Menu ............................... 41
4.3.6 Control Functions ............................................ 44
4.4 Condenser Fan Control Logic.......................... 47
4.4.1 Air-Cooled Condenser Control Setpoints ........ 47
4.4.2 Increasing Condenser Pressure ...................... 48
4.4.3 Decreasing Condenser Pressure .................... 48
4.5 Master/ Slave Control Sequence ..................... 48
4.5.1 Principle of Operation VIA DBLAN
Communication Bus ........................................ 49
4.5.2 Sequence of Operation ................................... 50
4.6 Vision 2020i Local Area Network (DBLAN) .. 50
4.7 Network Connection Diagram .......................... 51
4.8 Hardware Setting ................................................. 51
4.8.1 Addressing the Vision 2020i Controller ........... 51
4.8.2 Addressing the Vision 2020i DBG1 Terminal .. 52
4.8.3 Vision 2020i Controller LED Status ................. 53
4.9 TYPICAL WIRING SCHEMATIC ........................ 54
5.0 MAINTENANCE
5.1 General ................................................................... 88
5.2 Periodic Inspection ............................................. 88
5.3 Monthly Inspection .............................................. 88
5.4 PHE Maintenance ................................................ 88
5.4.1 General ............................................................ 88
5.4.2 Evaporator Cleaning ....................................... 88
5.5 Air Cooled Condenser Cleaning ..................... 89
5.6 Electrical Malfunction ......................................... 89
5.7 Refrigerant Charging .......................................... 89
5.7.1 General ........................................................... 89
5.7.2 Air Cooled Package ........................................ 89
5.8 Trouble Shooting ................................................. 91
5.9 Sample Log Sheet ............................................... 92