Contents
Introduction.................................................................................................................................................................. 1
What is the WSHP Open controller? ..................................................................................................................1
Safety considerations & handling warning.......................................................................................................3
Wiring inputs and outputs........................................................................................................................................... 4
Communications wiring .............................................................................................................................................. 6
Protocol overview..................................................................................................................................................6
BACnet MS/TP ......................................................................................................................................................7
To set up the WSHP Open for BACnet MS/TP ..................................................................................... 7
Adjusting BACnet MS/TP properties using an Equipment Touch ....................................................... 9
Troubleshooting BACnet MS/TP communication ..............................................................................11
BACnet ARC156................................................................................................................................................. 11
To set up the WSHP Open for BACnet ARC156 .................................................................................11
Troubleshooting ARC156 communication .........................................................................................13
Modbus................................................................................................................................................................ 13
To set up the WSHP Open for Modbus...............................................................................................13
Troubleshooting Modbus ....................................................................................................................15
Johnson N2 ......................................................................................................................................................... 16
To set up the WSHP Open for N2 .......................................................................................................16
Troubleshooting N2.............................................................................................................................17
LonWorks ............................................................................................................................................................ 18
To set up the WSHP Open for the LonWorks Option Card (Part #LON-OC) ......................................19
Commissioning the controller for LonWorks communication...........................................................20
Troubleshooting LonWorks .................................................................................................................20
Start-up.......................................................................................................................................................................22
Sequence of Operation .............................................................................................................................................23
Scheduling .......................................................................................................................................................... 23
Fire/Smoke detector input............................................................................................................................... 24
Shutdown input .................................................................................................................................................. 24
Indoor fan............................................................................................................................................................ 24
Cooling................................................................................................................................................................. 25
Reverse cycle heating ....................................................................................................................................... 26
Auxiliary heat...................................................................................................................................................... 27
Indoor air quality (IAQ) and demand control ventilation (DCV) .................................................................. 28
Dehumidification ............................................................................................................................................... 28
Waterside economizer ...................................................................................................................................... 29
Demand limiting ................................................................................................................................................ 30
Power failure restart delay............................................................................................................................... 30
Alarms ................................................................................................................................................................. 30
Troubleshooting the WSHP Open .............................................................................................................................32
LED's .................................................................................................................................................................... 32
Compliance ................................................................................................................................................................34
FCC Compliance................................................................................................................................................. 34
CE Compliance ................................................................................................................................................... 34
BACnet Compliance........................................................................................................................................... 34
Appendix A: Network Points List for WSHP Open ..................................................................................................35
Third party access to BACnet points in a controller ..................................................................................... 35
Network points list for BACnet and Modbus ................................................................................................. 38
Network points list for N2 and LonWorks...................................................................................................... 42
Appendix B: BACnet Protocol Implementation Conformance Statement ...........................................................45
Appendix C: Modbus Protocol Implementation Conformance Statement...........................................................46
