Orion System SA E-BUS Controller - Manual (Page 3)

SA E-BUS Controller Technical Guide 3
Table of Contents
INPUTS AND OUTPUTS ................................................................................................................ 38
SA E-BUS Controller Inputs and Outputs ..............................................................................................................................38
SA Expansion Module Inputs and Outputs ............................................................................................................................39
SEQUENCE OF OPERATION .......................................................................................................... 41
Operation Modes ......................................................................................................................................................................41
Occupied/Unoccupied Mode of Operation .........................................................................................................................41
HVAC Modes of Operation ................................................................................................................................................41
Vent Mode Operation .........................................................................................................................................................41
Cooling Mode Operation ....................................................................................................................................................41
Stage Control Window .......................................................................................................................................................42
Modulating Cooling ............................................................................................................................................................42
DX Cooling .......................................................................................................................................................................42
Air Cooled Condenser Fan Operation ...............................................................................................................................43
Water Side Economizer Operation (Valves 1 & 2) .............................................................................................................43
Water Cooled Condenser (Valve 3) ...................................................................................................................................43
Chilled Water Cooling ........................................................................................................................................................44
External Cooling ................................................................................................................................................................44
Dehumidifi cation Mode ......................................................................................................................................................44
Coil Temperature Reset .....................................................................................................................................................44
Reheat Control ..................................................................................................................................................................45
Coil Temperature Offset .....................................................................................................................................................45
Heating Mode ...................................................................................................................................................................46
Stage Control Window .......................................................................................................................................................46
Modulating Hot Water or Steam Heating ...........................................................................................................................46
External Heat .....................................................................................................................................................................46
Air to Air Heat Pump Operation .........................................................................................................................................46
Water Source Heat Pump Operation .................................................................................................................................47
Morning Warm-Up Mode ...................................................................................................................................................47
Off Mode ............................................................................................................................................................................47
Supply Air Temperature Setpoint Reset .............................................................................................................................47
Supply Fan Control ............................................................................................................................................................48
Duct Static Pressure Control .............................................................................................................................................48
Pre-Heater Operation ........................................................................................................................................................49
Entering Air Lockouts .........................................................................................................................................................49
Supply Air Cutoffs ..............................................................................................................................................................49
SA E-BUS Controller Alarms .............................................................................................................................................50
VAV/Zone Controller Alarms ..............................................................................................................................................51
Scheduling .........................................................................................................................................................................52
Internal Trend Logging .......................................................................................................................................................52
Force Modes or Overrides .................................................................................................................................................53
VAV Terminal Unit Controller Compatibility ........................................................................................................................53
VAV/Zone System & Zoning System .................................................................................................................................53
TROUBLESHOOTING ..................................................................................................................... 54
LED Diagnostics .......................................................................................................................................................................54
Diagnostic LED Operation .......................................................................................................................................................55
APPENDIX ..................................................................................................................................... 56
System Confi gurations ............................................................................................................................................................56
Stand-Alone System Layout ..............................................................................................................................................57
Interconnected System Layout ..........................................................................................................................................58
Networked System Layout .................................................................................................................................................59
Temperature Sensor Testing ...................................................................................................................................................60
OE265 Series RH Sensor Testing .....................................................................................................................................61
OE271 Pressure Sensor Testing .......................................................................................................................................62
OE275-01 Suction Pressure Transducer Testing for R410A Refrigerant ...........................................................................63
INDEX ............................................................................................................................................ 64