Johnson Controls WRZ Series Wireless Room Sensors

Description

The WRZ Series Wireless Room Sensors are designed to sense room or zone temperature

and transmit wireless temperature control data. Some models also sense and transmit

relative humidity (RH).

Several models include an onboard passive infrared (PIR) occupancy sensor that detects

motion to determine if a space is occupied.

This feature maximizes up to 30% energy savings in high-energy usage environments

such as schools, dormitories, offices, and hospitals by adjusting the temperature of the

space based on the occupancy status. In addition, the PIR occupancy sensor facilitates

trending of floor space usage in these environments.

In a ZFR1800 Series Wireless Field Bus System application, the sensors communicate

with FAC26 Series, FEC16 Series, FEC26 Series, and VMA16 Series Controllers by

means of the ZFR18xx Series Router.

In wired field bus applications, the sensors communicate with a WRZ-7860 Wireless

Receiver. The WRZ-7860 Receiver transfers data to the controller by means of the Sensor

Actuator (SA) communication bus. In a typical application, one WRZ Series Sensor reports

to one WRZ-7860 Receiver, but up to five WRZSeries Sensors can be associated with a

single WRZ-7860 Receiver for multi-sensor averaging or high/low temperature selection.

The WRZ Series Wireless Room Sensors include models with either a temperature

setpoint dial or the setpoint adjustment pushbuttons and LCD that allows occupants

to view the zone temperature, Relative Humidity (RH), and view and adjust the zone

temperature setpoint. Some temperature and humidity models include a %RH pushbutton

to toggle between temperature and RH on the display. These models also have the capability

to set the desired default display to either temperature or RH. Some models also include

a °F/°C button, which provides a choice between degrees Fahrenheit (F) and degrees

Celsius (C).

Models are available with or without an LCD.

Depending on the sensor model, the WRZSeries Sensor can transmit sensed temperature,

setpoint temperature, sensed humidity, occupancy status, and low battery conditions to

an associated router or receiver. The WRZ Series Sensors are designed for indoor, intra-building

applications only.

The WRZ Series Sensors use direct-sequence, spread-spectrum RF technology, and operate 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.

Refer to the WRZ Series Wireless Room Sensors Product Bulletin (LIT-12011653) for important

product application information.

Features

• Wireless RF Design

• Integral Wireless Signal Strength Testing Built into the Sensor

• Easy Installation and Relocation

• Easily Applicable Data Types

• Simple, Field-Adjustable DIP Switches

• Wireless Signal Strength and Low Battery Condition Mapping

• Optional, Battery-Powered WRZ-SST-120 Wireless System Survey Tool

• High Resistance to RF Interference from Other Radio Devices or RF Noise Sources

• Onboard PIR Occupancy Sensor Available on Some Models

• User-Selectable Default Display for Humidity Models

• Display Models

• Three Temperature Setpoint Range Options

• Blinking Red LED Light to Indicate Firmware Version