CyberOne EC DX IOM Manual
2.9.1
Low/High Pressure Limit Switch ............................ 26
2.9.2
Head Pressure Controls-Air Cooled Systems..... 27
2.9.2.1
Condenser Fan Cycling (Condenser Model SCS-
AA, 0 °F ) .......................................................................... 27
2.9.2.2
Condenser Multi-Speed Fan Switch (Model HES-
CAA , 0 °F ) ...................................................................... 27
2.9.2.3
Variable Condenser Fan Speed (Condenser Model
SCS-SA, -20 °F) ........................................................... 27
2.9.2.4
Intelligent Control (Condenser Model SCS-EC
only, -20 °F) ................................................................... 27
2.9.2.5
Flooded Head Pressure Control (Condenser
Model SCS-AA with Fan Cycling, -30 °F)............. 27
2.9.2.6
Flooded Head Pressure Control (Condenser
Model HES-CAA , -30 °F) ......................................... 28
2.9.3
Head Pressure Controls-Water/Glycol Cooled
Systems ........................................................................... 28
2.9.4
Humidifier Adjustment ................................................ 28
2.9.5
EC Fan ............................................................................. 28
2.9.6
Thermal Expansion Valve ........................................... 28
2.9.7
Hot Gas Reheat (Optional) ........................................ 28
2.9.8
Hot Gas Bypass (Optional) ........................................ 29
2.9.8.1
Snap Acting .................................................................... 29
2.9.8.2
Full Floating .................................................................... 29
3.0
Commissioning, Operation and
Decommissioning ........................................ 30
3.1
Commissioning .............................................................. 30
3.1.1
Start-Up .......................................................................... 30
3.1.2
Microprocessor Controller Programming ........... 30
3.2
Decommissioning the Unit ........................................ 30
3.2.1
Recovering Refrigerant .............................................. 31
3.2.2
Labeling the Decommissioned Unit ....................... 31
4.0
Maintenance ................................................ 32
4.1
Periodic General Maintenance................................. 32
4.1.1
CyberOne EC DX A/C Unit ........................................ 32
4.1.1.1
Air Filter ........................................................................... 32
4.1.1.2
EC Fan ............................................................................. 32
4.1.1.3
Drain Pan......................................................................... 32
4.1.1.4
Coils .................................................................................. 32
4.1.1.5
Heat/Reheat ................................................................. 32
4.1.1.6
Humidifier ....................................................................... 32
4.1.1.7
Condensate Pump ....................................................... 33
4.1.2
Condenser ...................................................................... 33
4.2
Troubleshooting ........................................................... 33
4.3
Field Service .................................................................. 38
4.3.1
Leak Detection .............................................................. 38
4.3.2
Leak Repair .................................................................... 38
4.3.3
Refrigerant Piping ........................................................ 38
4.3.4
General Common Repairs/Component
Replacement ................................................................. 38
4.3.4.1
Compressor Failure ..................................................... 38
4.3.4.2
Standard Cleanout Procedure ................................. 39
4.3.4.3
Burn-Out/Acidic Cleanup Procedure .................... 39
4.3.4.4
Humidifier Cylinder Replacement. .......................... 39
5.0
Product Support ........................................... 41
5.1
Technical Support ........................................................ 41
5.2
Obtaining Warranty Parts .......................................... 41
5.3
Obtaining Spare/Replacement Parts .................... 41
Installation Checklist ............................................ 42
Glossary ................................................................. 45
Figures
Figure 1.
Typical Internal Layout- Downflow
Configuration............................................................. 4
Figure 2.
Typical Internal Layout- Upflow
Configuration............................................................. 4
Figure 3.
Free Cooling Diagram ............................................. 6
Figure 4.
Alternate Water Source Diagram. ....................... 7
Figure 5.
Recommended Installation Clearance .............. 8
Figure 6.
Typical Installation .................................................... 9
Figure 7.
Downflow Configuration Typical Air
Patterns .................................................................... 10
Figure 8.
Upflow Configuration Typical Air Patterns .... 11
Figure 9.
Optional Floor Stand Installation ...................... 12
Figure 10.
Condensate Pump ................................................ 16
Figure 11.
Sample Nameplate ............................................... 16
Figure 12.
Transformer Schematic ....................................... 18
Figure 13.
Interconnecting Field Wiring Remote
Condenser ............................................................... 19
Figure 14.
Interconnecting Field Wiring Remote
Condensing Unit .................................................... 20
Figure 15.
Interconnecting Field Wiring Glycol
Systems .................................................................... 21
Tables
Table 1.
Weight of Refrigerant (lb/100 ft of
type L tubing) .......................................................... 23
Table 2.
Weight of Refrigerant For A/C Units (lb) ........ 23
