Johnson Controls WRZ-7860-0 Installation Instructions Manual

WRZ-7860-0 Receiver for One-to-One Wireless Room
Sensing Systems
Installation Instructions
WRZ-7860 0
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Applications
The WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems is designed to receive wireless Radio
Frequency (RF) temperature and humidity data from WRZ Series Wireless Room Sensors, and to provide single
zone control data to specified Metasys® 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 NS-BTP7001-0, but eliminates communications wiring (that is usually placed inside the wall) between
the room sensor and receiver.
Like a network sensor, the WRZ-7860-0 Receiver is designed to communicate over a Sensor Actuator (SA) Bus
interface via Master-Slave/Token-Passing (MS/TP) BACnet® protocol with Johnson Controls® Variable Air Volume
(VAV) Modular Assembly (VMA) 16 Series Controllers and Field Equipment Controllers (FECs). The receiver
supplies the sensed zone temperature and humidity, temperature setpoint, and occupancy override data.
In a typical application, one WRZ Series Wireless Room Sensor reports to one WRZ-7860-0 Receiver; however, up
to five WRZ Series Wireless Room Sensors can be associated with a single WRZ-7860-0 Receiver. In multi-sensor
applications, the receiver passes all the room sensors' data to the controller. The VMA16 Series Controller or FEC
can be configured to either average the room sensors' 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 commissioning the WRZ-7860-0 Receiver and configuring 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.
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems
Refer to the QuickLIT website
Installation Instructions
1
24- 10563- 47, Rev . E
Part No. 24-10563-47, Rev. E
Issued January 2017
for the most up-to-date version of this document.