Stulz CyberOne EC DX, Installation, Operation And Maintenance Manual

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CyberOne EC DX IOM Manual
Table of Contents
1.0 Introduction .................................................... 1
1.1 General. ............................................................................... 1
1.2 Product Description ....................................................... 1
1.3 Safety .................................................................................. 1
1.3.1 General. ............................................................................... 1
1.3.2 Safety Summary ............................................................... 2
1.4 General Design ................................................................. 3
1.4.1 Electrical Compartment ................................................ 3
1.4.2 Circuit Breakers/Motor Start Protectors ................ 5
1.4.3 Heaters (Optional) ........................................................... 5
1.4.3.1 Hot Gas Re-heat. ............................................................. 5
1.4.3.2 Hot Water Re-heat ......................................................... 5
1.4.4 Coil(s) ................................................................................... 5
1.4.5 EC Fan ................................................................................. 5
1.4.6 Temperature/Humidity Sensor................................... 5
1.5 Optional Equipment ........................................................ 5
1.5.1 Humidifier........................................................................... 5
1.5.2 Condensate Pump .......................................................... 5
1.5.3 Water Detector ................................................................. 5
1.5.4 Smoke Detector ............................................................... 5
1.5.5 Firestat ................................................................................ 5
1.6 Free-cooling Operation ................................................. 6
1.7 AWS Operation ................................................................ 7
2.0 Installation ..................................................... 8
2.1 Receiving the Equipment .............................................. 8
2.2 Moving the Equipment ................................................... 8
2.2.1 Conditioned Space.......................................................... 9
2.3 Mounting/Placement ..................................................... 9
2.3.1 Precision A/C Unit........................................................ 10
2.3.2 Outdoor Equipment ..................................................... 10
2.4 Air Distribution Connection ....................................... 10
2.4.1 Downflow Configuration Air Patterns .................... 10
2.4.2 Upflow Configuration Air Patterns .......................... 11
2.5 Optional Equipment (Field Installed) ...................... 12
2.5.1 Floor Stand ..................................................................... 12
2.5.2 Remote Display ............................................................. 12
2.5.3 Transformer (For 277 Volt Applications) ............... 12
2.5.4 Remote Temperature/Humidity Sensor ..................... 12
2.5.5 Remote Water Detector ............................................. 13
2.5.6 Plenum Box Assembly ................................................ 13
2.6 Piping Connections ...................................................... 13
2.6.1 Refrigerant Piping ........................................................ 13
2.6.1.1 Self-Contained Systems ............................................ 13
2.6.1.2 Split Systems ................................................................. 13
2.6.1.3 Remote Air Cooled Condensers (AR) ..................... 15
2.6.1.4 Remote Air Cooled Condensing Units (AHU) ....... 15
2.6.2 Water/Glycol ...................................................................... 15
2.6.3 Condensate Drain ......................................................... 15
2.6.3.1 Gravity Drain ................................................................... 15
2.6.3.2 Condensate Pump........................................................ 15
2.6.4 Humidifier ........................................................................ 15
2.7 Utility Connections ....................................................... 16
2.7.1 Main Power ..................................................................... 16
2.7.1.1 Single-Phase Units 208/230V ............................... 17
2.7.1.2 Single-Phase Units 277V .......................................... 17
2.7.1.3 Single-Phase Units (208/230V) with 277/230V
Buck/Boost Transformer Applications .................. 17
2.7.1.4 Three-Phase Units ....................................................... 18
2.7.2 Controls ........................................................................... 18
2.7.3 Optional Equipment ..................................................... 18
2.7.3.1 Remote Temperature/Humidity Sensor ................ 18
2.7.3.2 Remote Water Detector ............................................. 18
2.7.4 Air-Cooled Split Systems ........................................... 18
2.7.4.1 Remote Condenser (AR Models) ............................. 19
2.7.4.2 Remote Condensing Unit (AHU Models) ............... 20
2.7.5 Glycol Systems (G Models) ........................................ 20
2.8 System Charging Procedures ................................... 21
2.8.1 Water/Glycol Systems................................................. 21
2.8.1.1 Pump................................................................................. 22
2.8.2 DX Unit Charging Requirements .............................. 22
2.8.3 Remote Air-Cooled Systems (AR/AHU) ................ 22
2.8.4 R407C Refrigerant ..................................................... 22
2.8.5 Estimating Refrigerant Charge ....................................... 22
2.8.6 Preparing System For Charging ............................... 23
2.8.7 Refrigerant Charging Procedures .................................. 24
2.8.7.1 0 ºF Fan Cycling and -20 ºF Variable Speed
Control .............................................................................. 25
2.8.7.2 -30 °F Flooded Head Pressure Control ................ 25
2.8.8 Refrigerant Characteristics ....................................... 26
2.8.8.1 Pressure/Temperature Settings .............................. 26
2.8.8.2 Saturated Refrigerant Pressure Tables .................... 26
2.9 System Settings and Adjustments .......................... 26