Applications - Johnson Controls - LIT-12011640 - WRZ-7860-0 - Wireless Device - WRZ One-to-One wireless room sensing system

WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Product Bulletin

Johnson Controls
Product name
WRZ One-to-One wireless room sensing system
Document type
Product Bulletin
Document number
Revision date

Use the WRZ-7860-0 Receiver for a One-to-One Wireless Room Sensing Systems to receive wireless Radio Frequency (RF) temperature and humidity data from WRZ Series Wireless Room Sensors, and to provide single zone control data to the specified system digital controllers in building HVAC systems. The WRZ Series Wireless Room Sensor and WRZ-7860-0 Receiver combination is a functional equivalent to a network sensor, such as an NS8000 Network Sensor, but eliminates the requirement for communications wiring usually placed inside the wall between the room sensor and receiver.

Like a network sensor, the WRZ-7860-0 Receiver communicates over a Sensor Actuator (SA) bus interface through MS/TP BACnet® protocol with Johnson Controls® field controllers. The receiver supplies the sensed zone temperature and humidity, temperature setpoint, and occupancy override data.

In an application, one WRZ Series Wireless Room Sensor reports to one WRZ-7860-0 Receiver. However, up to five WRZ Series Wireless Room Sensors can associate with a single WRZ-7860-0 Receiver. In multi-sensor applications, the receiver passes all the room sensors data to the controller. Configure the controller to either average the room sensor temperature and humidity input, or select the highest or lowest sensed temperature and humidity for control of the target zone.

The WRZ-7860-0 Receiver uses direct-sequence, spread-spectrum RF technology, and operates on the 2.4 GHz Industrial, Scientific, and Medical (ISM) band. The receiver meets the IEEE 802.15.4 standard for low-power, low-duty cycle RF transmitting systems. A WRZ-7860-0 Receiver operates as a transceiver, to create a bidirectional association with a WRZ Series Wireless Room Sensor.

Refer to the WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Technical Bulletin (LIT-12011641) for information on how to commission the WRZ-7860-0 Receiver and configure a one-to-one wireless room sensing systems.

Important: The WRZ-7860 Receiver is intended to provide an input to equipment under normal operating conditions. Where failure or malfunction of the receiver could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the WRZ-7860 Receiver.
Important : Le WRZ-7860 Receiver est destiné à transmettre des données entrantes à un équipement dans des conditions normales de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du receiver risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou de protection en cas de défaillance ou de dysfonctionnement du WRZ-7860 Receiver.