*24107240D*
24-10724-0, Rev. D
(barcode for factory use only)
WRZ-TTB0000-5 Handheld Temperature Room Sensor
Installation Guide
WRZ-TTB0000-5
Refer to the QuickLIT website for the most up-to-date version of this document.
Part No. 24-10724-0, Rev. D
Issued March 2019
Application
The WRZ Handheld Temperature Room Sensor is
designed to sense the temperature of a room or zone
and transmit wireless temperature control data.
In a mesh application, the WRZ sensor is compatible
with both the ZFR1810 and ZFR1820 Pro Series
Wireless Field Bus Systems. The sensors
communicate with FAC26 Series, FEC16 Series,
FEC26 Series, and VMA16 Series Controllers through
the ZFR18xx Router (ZFR or ZFR Pro Series Router).
Up to nine WRZ Series Sensors can be associated
with a single Controller.
In wired field bus applications, the sensors
communicate with a WRZ-78xx Wireless Receiver. The
WRZ-78xx 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-78xx Receiver, but up to five
WRZ Series Sensors can be associated with a single
WRZ-78xx Receiver for multi-sensor averaging or
high/low temperature selection.
The WRZ Handheld Temperature Room Sensor comes
with an LCD. The WRZ Sensor can transmit sensed
temperature, setpoint temperature, occupancy status,
and low battery conditions to an associated router or
receiver. The WRZ Sensor is designed for indoor,
intra-building applications only.
The WRZ Sensor 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.
IMPORTANT: The WRZ Sensor is intended to
provide an input to equipment under normal
operating conditions. Where failure or malfunction of
the sensor 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 sensor.
IMPORTANT : Le WRZ Sensor est destiné à
transmettre des données entrantes à un équipement
dans des conditions normales de fonctionnement.
Lorsqu'une défaillance ou un dysfonctionnement du
sensor 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 sensor.
WRZ-TTB0000-5 Handheld Temperature Room Sensor Installation Guide 1
North American Emissions Compliance
Figure 1: WRZ Handheld Temperature Room
Sensor - Physical Features and Dimensions,
in. (mm)
LCD
Tamper-Resistant
Set Screw
4-23/32
(120)
3-5/32
(80)
1-1/2
(38)
Back of Base to
Front of Setpoint
Control Dial
FIG:wrz_ttb _frnt
Manual Occupancy
Override Button
Temperature
Increase Button
Temperature
Decrease Button
United States
Compliance Statement (Part 15.19)
• one DIP switch overlay for a mesh network
application using a ZFR or ZFR Pro Series Router
• one DIP switch overlay for a One-to-One
application using a WRZ-78xx Receiver
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference,
and
2. This device must accept any interference
received, including interference that may cause
undesired operation.
Warning (Part 15.21)
Changes or modifications not expressly approved by
the party responsible for compliance could void the
user’s authority to operate the equipment.
Canada
Industry Canada Statement
The term IC before the certification/registration
number only signifies that the Industry Canada
technical specifications were met.
Le terme « IC » précédant le numéro d'accréditation/
inscription signifie simplement que le produit est
conforme aux spécifications techniques d'Industry
Canada.
• one installation instructions sheet
• two AA alkaline batteries
Dimensions
See Figure 1 for dimensions and physical features of
the WRZ Handheld Temperature Room Sensor.
Installation
Follow these guidelines when installing the WRZ
Sensor:
• Transport the sensor in the original container to
minimize vibration and shock damage.
• Verify that all the parts shipped with the sensor.
• Do not drop the sensor or subject it to physical
shock.
• Do not attempt to remove or repair the circuit board
from the sensor housing. Other than battery
replacement, the sensor is not user-serviceable.
Parts Included
• one WRZ Handheld Temperature Room Sensor
• tether cable with aluminum sleeves
Special Tools Needed
• 1/16 in. (1.6 mm) Allen-head adjustment tool
(Johnson Controls® T-4000-119; order separately)
for the tamper-resistant set screw that secures the
sensor to the mounting base
• coin for unlocking the sensor housing from the
mounting base locking tab
• tool to crimp the aluminum sleeves to the tether
cable
• wire cutter to cut the tether cable
• Phillips screwdriver for accessing battery holder
WRZ-TTB0000-5 Handheld Temperature Room Sensor Installation Guide2
Preparing to Install and Mount the Sensor
Figure 2: Measuring the Distance from the Head
Wall System to the Hospital Bed
FIG:Diemsions
FIG:cut cable
Figure 3: Cutting the Cable
1. Determine the sensor placement.
In addition to the typical thermostat and
temperature control location considerations, follow
these guidelines for locating a sensor in wireless
applications:
• Locate the sensor on the same building level
as the nearest ZFR or ZFR Pro Series Router or
WRZ-78xx Receiver.
• For best signal transmission, locate the sensor at
least 2 in. (51 mm) away from any metal
obstructions.
• Wherever possible, locate the sensor in the
direct line of sight to the ZFR or ZFR Pro Series
Router, or WRZ-78xx Receiver. Signal
transmission is best if the path between the sensor
and the router or receiver is as direct as possible.
Line of sight is desirable but not required, as long
as the path is not blocked by large metal objects.
• Avoid metal obstructions (including equipment
rooms and elevator shafts) and concrete or brick
walls between the sensor and the ZFR or ZFR Pro
Series Router, or WRZ-78xx Receiver.
• Do not locate the sensor in recessed areas or
metal enclosures.
• In mesh network applications, install the sensor
within range of two or more ZFR or ZFR Pro Series
Routers. Redundancy in the layout provides the
best reliability in wireless installations.
2. Measure the distance from the head wall system to
the desired location of the sensor placed on the
hospital bed.
Note: Be sure the cable is long enough to be able
to attach the sensor to the wall. See Attaching the
Tether Cable to the WRZ Handheld Temperature
Room Sensor and Mounting the WRZ Handheld
Temperature Room Sensor for more information.
Attaching the Tether Cable to the WRZ Handheld Temperature Room Sensor
1. Cut the tether cable to the desired length using the
measurement taken in Preparing to Install and
Mount the Sensor for more information.
• Do not mount the sensor closer than 2 ft (0.61 m)
or farther than 100 ft (30 m) from the ZFR or ZFR
Pro Series Router or 150 ft (45 m) from the
WRZ-78xx Receiver.
• The recommended indoor line-of-sight
transmission range between the sensor and the
ZFR or ZFR Pro Series Router is 50 ft (15 m).
2. Remove the temperature sensor cover from its
base by loosening the set screw. See Figure 1.
3. Remove the temperature sensor housing from its
mounting base.
WRZ-TTB0000-5 Handheld Temperature Room Sensor Installation Guide 3
4. Slide the aluminum sleeve onto the tether cable.
Figure 4: Placing the Aluminum Sleeve on the
Tether Cable
FIG:sleeve 1
Figure 5: Tether Cable Placement
FIG:insert cable
Figure 6: Temperature Sensor Base Secured to the
Tether Cable
FIG:secure cable
5. Feed the tether cable through the holes at the top
of the base, and then insert the tether cable into
the second opening in the aluminum sleeve.
6. Slide the aluminum sleeve toward the temperature
sensor base, providing enough space to allow you
to hang the cable on a hook (Figure 7).
7. Crimp the aluminum sleeve to secure the
temperature sensor base to the tether cable.
Note: Use a soft cloth to protect the sleeve from
being marred or damaged while crimping the
sleeve.
8. 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.
IMPORTANT: Do not power up the WRZ Handheld
Temperature Room Sensor until a receiver or
controller is installed and operating within 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 within range,
resulting in reduced battery life.
9. Align the tabs on the bottom edge of the mounting
base with the slots on the bottom edge of the
sensor housing, and rotate the sensor assembly
onto its mounting base.
10. Use a 1/16 in. (1.6 mm) Allen wrench or a
Johnson Controls T-4000-119 Allen-Head
Adjustment Tool to tighten the tamper-resistant set
screw and secure the temperature sensor
assembly onto its mounting base.
WRZ-TTB0000-5 Handheld Temperature Room Sensor Installation Guide4
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