Carrier’s WSHP Open controller is an integrated component of a Carrier water source heat pump. The WSHP Open controller continuously monitors and regulates water source heat pump operation with reliability and precision. This advanced controller features a sophisticated, factory-engineered control algorithm that provides optimum performance and energy efficiency. The WSHP Open controller also features plug-and-play connectivity to the Carrier i-Vu System. The Carrier i-Vu System combines state-of-the-art Carrier equipment, plug-and-play controllers, and the powerful, web-based i-Vu user interface to form a cohesive, intuitive, and fully-integrated BACnet® Building Automation System.
For added flexibility, the WSHP Open controller is capable of stand-alone operation. Or, it can be integrated with any Building Automation System utilizing the BACnet, Modbus, or N2 protocols.
Product Integrated Controller
| BACnet Support | Advanced Application Controller (B-AAC), as defined in BACnet 135-2001 Annex L |
| Communication Ports |
Network Comm port: EIA-485 port for BACnet MS/TP, Modbus RTU, or N2 communications (protocol and baud rate are DIP switch selectable); Comm Option port: For connecting a LON Option Card; Local Access port: For system start-up and troubleshooting (115.2 kbps); Rnet port: For connecting Carrier communicating room sensors and Carrier’s touchscreen user interface |
| Inputs |
4 analog inputs: Dedicated to Relative Humidity, Indoor Air Quality, Supply Air Temperature, and Leaving Condenser Water Temperature. AI’s have 10 bit A/D resolution. 4 binary inputs: Stage 1 Compressor Status, Condensate Overflow, Fire/Smoke Detector, and Fan Status (optional) |
| Outputs |
2 analog outputs: 1 dedicated to Outside Air Damper, and 1 configurable for either Auxiliary Reheat or Waterside Economizer. AO’s have 10 bit D/A resolution. 8 binary outputs: Supply Fan (low, medium, and high), Compressor Stage 1, Compressor Stage 2, Reversing Valve, Auxiliary Heat/2-position Waterside Economizer, and Dehumidification. Relay contacts rated at 3A max @ 24VAC, configured normally open |
| Real Time Clock | Battery-backed real time clock keeps track of time in event of power failure |
| Battery | 10-year Lithium CR2032 battery provides a minimum of 10,000 hours of trend data & time retention during power outages |
| Protection | Incoming power and network connections are protected by non-replaceable internal solid-state polyswitches that reset themselves when the condition that causes a fault returns to normal. The power, network, input, and output connections are also protected against voltage transient and surge events. |
| Status Indicators | LED status indicators for network communications, run status, error, power, and all digital outputs |
| Controller Addressing | Rotary dip switches set BACnet MS/TP, Modbus, or N2 address of controller |
| Listed by | UL-873, FCC Part 15-Subpart B-Class A, CE EN50082-1997 |
| Environmental Operating Range |
Operating: -40 to 158ºF (-40 to 70ºC) 10 to 95% RH, non-condensing Storage: -40 to 158ºF (-40 to 70ºC) 10 to 95% RH, non-condensing |
| Power Requirements | 24VAC +/- 10%, 50-60Hz, 14 VA power consumption, 26VDC (25V min, 30V max), single class 2 source only, 100 VA or less |
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