Installing the WRZ Series Sensor - Johnson Controls - WRZ-THJ - WRZ-THN - WRZ-TTJ - WRZ-TTK - WRZ-TTP - WRZ-TTR - WRZ-TTS - Wireless Device - WRZ one-to-one Wireless Room Sensing System

WRZ Series Wireless Room Sensors Installation Guide

Brand
Johnson Controls
Product name
WRZ one-to-one Wireless Room Sensing System
Document type
Installation Guide
Part number
24-10332-2
Document revision
V
Revision date
2020-07-09
Language
English

About this task

Use the factory-installed double-sided adhesive foam tape on the back of the device to surface mount the WRZ Series Sensor. To mount the sensor base with adhesive foam tape, complete the following steps :

Procedure

  1. Clean the mounting surface to ensure that the adhesive foam tape sticks to the surface.
    Note: The mounting surface, mounting base, and ambient temperature must be at least 10°C (50°F) when you mount the sensor base with adhesive foam tape.
  2. Remove the sensor housing from its mounting base as shown in the following figure.
  3. Peel off the protective paper from the factory-installed strips of adhesive foam tape on the back of the mounting base.
  4. When positioned correctly, the arrow between the terminal slots on the inside of the mounting base points up. Ensure that the mounting base is upright, tamper-resistant set screw on top, and press the base firmly onto the clean mounting surface.
    During normal operation, the WRZ Series Sensor is in a suspended sleep mode to conserve battery life. The sensor periodically wakes up, reads its sensor values, and sends the sensor data to the associated controller. The wake-up time varies, depending on the sensor type and changes in value. When you adjust the setpoint dial or press the manual occupancy override button, the sensor wakes up immediately and sends its data. See Preparing the WRZ Series Sensor for Operation
    Figure 1. Removal of the Sensor housing from its mounting base

    Important: Do not turn on the WRZ Series Sensor until an installed receiver or controller operates in the same RF range. If this condition is not met, the sensor uses a higher-than-normal battery current as it attempts to find a receiver or controller in range, resulting in reduced battery life.
    Important: During start up and commissioning or in a power-outage situation, the associated controller may be shut down for extended periods of time. To further conserve on battery life, the WRZ Series Sensor adjusts its rejoin attempt time to much longer periods, 6 times every 2 minutes for the first 10 minutes, then once every 30 minutes for 72 hours, and then once for each day thereafter. This may cause the sensor to be offline to the system until it rejoins. When you adjust the setpoint or press the manual occupancy override button, the sensor wakes up and begins its normal update sequence.