Johnson Controls WRZ-7860-0 User manual

WRZ-7860-0 Receiver for One-to-One Wireless
Room Sensing Systems Installation Guide
Applications
Use the WRZ-7860-0 Receiver for 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
NS-BTP7001-0, but eliminates 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 a MS/TP BACnet® protocol with Johnson
Controls® Controllers. The receiver supplies the sensed
zone temperature and humidity, temperature setpoint,
and occupancy override data.
In a normal 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 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 about how to commission the WRZ-7860-0
Receiver and configure 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.
North American emissions
compliance
United States
Compliance Statement (Part 15.19)
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(s)
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.
Installation
To install the WRZ-7860-0 Receiver, follow these guidelines:
• Transport the WRZ-7860-0 Receiver in the original
container to avoid vibration and shock damage to the
receiver.
• Verify that all the parts shipped with the receiver.
• Do not drop the receiver or subject it to physical shock.
*241056347G*
Part No. 24-10563-47 Rev. G
2020-07-09
WRZ-7860-0, WRZ-Mx0100-x, WRZ-RMT10K-2, WRZ-
STR0000-2, WRZ-THx100-0, WRZ-TTx100-0

Use the following procedure to mount, wire, and prepare
the receiver for operation:
1. Mount the mounting base. See Mounting.
2. Set the DIP switches. See Setup and Adjustments.
3. Align the tabs on the edge of the mounting base
with the slots on the edge of the receiver housing,
and rotate the assembly onto its mounting base as
illustrated in Figure 3.
4. Use a 1/16 in. (1.5 mm) Allen wrench or Johnson
Controls T-4000-119 Allen-Head Adjustment Tool to
tighten the tamper-resistant set screw and fasten the
receiver enclosure to the mounting base.
Note: To avoid damage to the unit, do not
overtighten the set screw.
5. Connect the SA bus cable from the controller to the
WRZ-7860-0 Receiver. See Wiring.
Parts included
• One WRZ-7860-0 Receiver with factory-installed double-
sided adhesive foam tape on the back of the unit
• One installation guide sheet
Dimensions
See the following figure for dimensions and physical
features of the WRZ-7860-0 Receiver.
Figure 1: WRZ-7860-0 Receiver physical features and
dimensions, in. (mm)
Mounting
Location considerations
To locate a WRZ-7860-0 Receiver, follow these guidelines:
• Locate the receiver so that it is easily accessible in
the proximity of the field controller, on a Variable Air
Volume (VAV) duct, or just above or just below the
ceiling tiles.
Note: Communication cables of various lengths
are available to connect the receiver SA bus. See
Table 4 for more details.
• Locate the receiver up to 100 ft (30 m) from the WRZ
Series Wireless Room Sensor in a building environment.
• Locate the receiver near the center of the associated
room sensor layout in multi-sensor applications.
• Locate the receiver on the same floor or building level
as the associated room sensor.
• Locate the receiver in the direct line-of-sight with the
room sensor whenever possible. Signal transmission is
best if the path between the room sensor and receiver
is as direct as possible. Line-of-sight is preferred but
not required, as long as the path is not blocked by large
metal objects.
• Mount the receiver so that the antenna symbol on the
cover near the LEDs is in a vertical orientation, up or
down. The antenna symbol indicates the approximate
location of the receiver’s internal onboard antenna.
Figure 2: Correct mounting orientation
• If you mount the receiver on duct work, such as a
VAV box, ideally the antenna portion of the receiver,
approximately 1/3 of the enclosure, hangs below the
duct work. Avoid pipes, duct work, or other metal
obstructions in the direct line-of-sight to the room
sensor.
• Avoid large metal obstructions, including equipment
rooms and elevator shafts, and concrete or brick walls
between the receiver and the room sensor.
• Do not mount the receiver in recessed areas or shelving
units.
Wireless signal transmission considerations
Line-of-sight transmission ranges between a WRZ Series
Wireless Room Sensor and a WRZ-7860-0 Receiver can
be less than the maximum distances shown in Table 1.
The effective transmission range for indoor applications
varies because of RF signal absorption and reflection due
to metal obstructions, walls or floors, and furniture found
in building interiors.
Table 1: Indoor line-of-sight transmission ranges
Range type Transmission distance
Practical
average
100 ft (30 m)
Maximum 150 ft (45 m)
Use the manual occupancy override button on the WRZ
Series Wireless Room Sensor to test the RF signal strength
between an installed room sensor and receiver. Refer
to the WRZ-7860-0 Receiver for One-to-One Wireless Room
Sensing Systems Technical Bulletin (LIT-12011641) for
more information about how to determine the signal
strength between a WRZ Series Wireless Room Sensor
and a WRZ-7860-0 Receiver. If the RF signal path provides
unsatisfactory results, use a Johnson Controls ZFR18xx
Series Wireless Field Bus Router as a repeater and locate it
between the room sensor and the receiver.
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide2

Surface mounting the base with double-
sided adhesive foam tape
About this task:
To surface mount the WRZ-7860-0 Receiver, use the
factory-installed double-sided adhesive foam tape on the
back of the unit.
To mount the receiver base with the adhesive foam tape,
complete the following steps:
1. Remove the receiver housing from its mounting
base.
Figure 3: Removing the receiver housing from its mounting
base
2. Peel off the protective paper from the adhesive
foam tape on the back side of the mounting base.
3. Ensure that the base is oriented in the preferred
mounting position, note where the set screw is
because that is the antenna side, and press the
base firmly onto the clean mounting surface.
Surface mounting the base with screws
About this task:
Mount the WRZ-7860-0 Receiver:
• to a wall; use two or more wall anchor molly bolts,
provided in the field
• to a metal duct, such as a VAV box; use two or more
sheet metal screws, provided in the field
To mount the receiver base with screws, complete the
following steps:
1. Remove the receiver housing from its mounting
base as illustrated in Figure 3.
2. Use the mounting base as a template and mark
the location for the screw holes on the mounting
surface as illustrated in Figure 4.
3. Drill a pilot hole at each of the marked locations. If
you mount to a wall, install the molly anchors.
4. Secure the mounting base to the surface with the
screws.
Figure 4: Mounting the receiver’s mounting base with
screws
Wiring
The WRZ-7860-0 Receiver has a modular jack on the edge
of the enclosure, opposite the side with the tamper-
resistant set screw. This modular jack for the SA bus
requires a straight-through, one-to-one connection cable,
not a crossover, to the SENSOR jack on a Controller.
Important: Configure the field controller as if
connected to a wired network sensor. Configuring
the field controller for use with a WRZ Series Wireless
Room Sensor causes incompatibility with the
WRZ-7860-0 Receiver.
Note: The SA bus cable supplies power to the
WRZ-7860-0 Receiver when the Controller is turned
on.
For more details on wiring the MS/TP Communication Bus,
refer to the MS/TP Communications Bus Technical Bulletin
(LIT-12011034).
Setup and adjustments
About this task:
Before you reinstall the WRZ-7860-0 Receiver to its
mounting base, set the DIP switches according to the job
plans. See Figure 5. When you set the DIP switches, ensure
to set the AREA and TRANSMITTER I.D. switches on the
WRZ-7860-0 Receiver and the WRZ Series Wireless Room
Sensor to the same value.
Follow these steps:
1. Disconnect the SA bus cable before you set the DIP
switches.
2. Set the AREA and TRANSMITTER I.D. DIP switches.
Note: To use a ZFR18xx Series Wireless
Field Bus Router as a repeater, set the
AREA DIP switches and the most significant
TRANSMITTER I.D. bit (128) on the WRZ-7860-0
Receiver to the OFF position. Then set the
ZFR18xx Series Wireless Field Bus Router DIP
switches to the same address as the lower 7 bits
of the TRANSMITTER I.D. on the WRZ-7860-0
Receiver.
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide 3

3. Connect the SA bus cable.
Five seconds after you applied power, the red
LED flashes to indicate the firmware revision.
For example, the LED flashing three times
during the startup process indicates firmware
revision 3.
Result
For each WRZ-7860-0 Receiver, record the following:
• the AREA and TRANSMITTER I.D. DIP switch settings
• the location or identification of the controller that the
WRZ-7860-0 Receiver connects to with the SA bus cable
Use this information to adjust the DIP switch settings of
the WRZ Series Wireless Room Sensor assigned to the
WRZ-7860-0 Receiver, and to associate the room sensor
and receiver with the correct controller.
Figure 5: WRZ-7860-0 Receiver, back view
Refer to the WRZ-7860-0 Receiver for One-to-One Wireless
Room Sensing Systems Technical Bulletin (LIT-12011641) for
more information about how to determine the settings for
the AREA and TRANSMITTER I.D. DIP switches for a WRZ
Series Wireless Room Sensor and a WRZ-7860 Receiver.
Troubleshooting
Use the status LEDs illustrated in Figure 1 with the
information in the following table to troubleshoot the
WRZ-7860-0 Receiver.
Table 2: Status LEDs
Name Color Normal Description
Flickering = SA bus
activity
SA bus Green Flickering
Off steady = no SA
bus activity
Green = good
room sensor
battery
1 blink = marginal
RF signal strength
2 blinks = good RF
signal strength
3 blinks = excellent
RF signal strength
RF
wireless
signal
strength
and
power
status
Green
or red
bi-color
1Green – On,
blinks signal
strength every
60 seconds1
Red = weak room
sensor battery
1 Pressing the occupancy override button on the associated
WRZ Series Wireless Room Sensor causes the RF LED on the
WRZ-7860-0 Receiver to blink.
Repair information
If The WRZ-7860-0 Receiver fails to operate in its
specifications, replace the unit. For a replacement
receiver, contact the nearest Johnson Controls
representative.
Ordering information
To order a WRZ Receiver, contact the nearest Johnson
Controls representative. Specify the required product
code number from Table 3 and accessories from Table 4.
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide4

Table 3: Selection chart
Product code number Product description
WRZ-TTB0000-0 Temperature Sensor with display, °F/°C button, manual occupancy override button, and Warmer/Cooler
(+/-) setpoint dial adjustment or scaled setpoint dial adjustment: 55°F to 85°F (13°C to 29°C)
WRZ-TTB0000-5 Temperature Sensor with display, setpoint adjustment buttons, Warmer/Cooler (+/-) setpoint dial
adjustment or scaled setpoint dial adjustment: 55°F to 85°F (13°C to 29°C), manual occupancy override
button, fully sealed for sanitary hospital use
WRZ-TTD0000-0 Temperature Sensor with display, °F/°C button, manual occupancy override button, fan speed control,
and Warmer/Cooler (+/-) setpoint dial adjustment or scaled setpoint dial adjustment: 55°F to 85°F (13°C to
29°C)
WRZ-TTS0000-0 Wireless Room Temperature Sensor with setpoint dial adjustment scale: 55°F to 85°F (13°C to 29°C),
battery level/signal strength LED, and manual occupancy override button
WRZ-TTS0000-2 WRZ Wireless Room Sensor, temperature, manual occupancy override button, setpoint dial adjustment,
ZFR183x compatible
WRZ-TTR0000-0 Wireless Room Temperature Sensor with battery level/signal strength LED, manual occupancy override
button, without setpoint adjustment
WRZ-TTR0000-2 WRZ Wireless Room Sensor, temperature, manual occupancy override button, without setpoint dial
adjustment, ZFR183x compatible
WRZ-TTP0000-0 Wireless Room Temperature Sensor with Warmer/Cooler (+/-) setpoint dial adjustment, battery level/
signal strength LED, and manual occupancy override button
WRZ-TTP0000-2 WRZ Wireless Room Sensor, temperature, manual occupancy override button, Warmer/Cooler (+/-)
setpoint dial adjustment, ZFR183x compatible
WRZ-TTK0000-0 Temperature Sensor with display, up/down setpoint adjustment buttons, °F/°C button, fan speed control
button, and occupancy button
WRZ-TTK0000-2 WRZ Wireless Room Sensor, temperature, LCD display, °F/°C, fan speed control, manual occupancy
override button, button setpoint adjustment, ZFR183x compatible
WRZ-TTJ0000-0 Temperature Sensor with display, up/down setpoint adjustment buttons, °F/°C Button, and occupancy
button
WRZ-TTJ0000-2 WRZ Wireless Room Sensor, temperature, LCD display, °F/°C, manual occupancy override button, button
setpoint adjustment, ZFR183x compatible
WRZ-THB0000-0 Temperature/Humidity Sensor with display, Warmer/Cooler (+/-) setpoint dial adjustment or scaled
setpoint dial adjustment: 55°F to 85°F (13°C to 29°C),°F/°C button, RH button, and manual occupancy
override button
WRZ-THN0000-0 Wireless Room Temperature and Humidity Sensor with battery level/signal strength LED, manual
occupancy override button, and without display
WRZ-THN0000-2 WRZ Wireless Room Sensor, temperature, RH 3% accuracy, manual occupancy override button, without
setpoint dial adjustment, ZFR183x compatible
WRZ-THJ0000-0 Temperature/Humidity Sensor with display, up/down setpoint adjustment buttons, °F/°C Button, RH
button, and occupancy button
WRZ-THJ0000-2 WRZ Wireless Room Sensor, temperature, RH 3% accuracy, LCD display, °F/°C, manual occupancy override
button, button setpoint adjustment, ZFR183x compatible
WRZ-THP0000-0 Temperature/Humidity Sensor with Warmer/Cooler (+/-) setpoint dial adjustment and manual occupancy
override button, and battery level/signal strength LED
WRZ-STR0000-0 Wireless Refrigerator/Freezer Temperature Transmitter with Probe Assembly, non-NIST certified, display,
°F/°C button, and manual occupancy override button
WRZ-STR0000-2 WRZ Wireless Refrigerator or Freezer Temperature Transmitter with probe assembly, temperature, LCD
display, °F/°C, manual occupancy override button, without setpoint dial adjustment, ZFR183x compatible
WRZ-RMT10K-2 WRZ Wireless Remote Temperature Transmitter, temperature, LCD display, °F/°C, manual occupancy
override button, without setpoint dial adjustment, ZFR183x compatible
WRZ-MTJ0100-2 WRZ Wireless Room Sensor, temperature, LCD display, °F/°C, manual occupancy override button, passive
infrared (PIR) occupancy sensor, button setpoint adjustment, ZFR183x compatible
WRZ-MHN0100-2 WRZ Wireless Room Sensor, temperature, RH 3% accuracy, manual occupancy override button, PIR
occupancy sensor, without setpoint dial adjustment, ZFR183x compatible
WRZ-STRNIST-2 Wireless Refrigerator or Freezer Temperature Transmitter and NIST certified probe assembly, LCD display,
°F/°C button, and manual occupancy override, ZFR183x compatible
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide 5

Accessories
Table 4: Accessories
Product code number Product description
WRZ-SST-120 Wireless System Survey tool
CBL-NETWORK6-0 6 ft (1.8 m) SA bus interface cable to connect WRZ-7860-0 Receiver to the Controller
CBL-NETWORK25-0 25 ft (7.6 m) SA bus interface cable to connect WRZ-7860-0 Receiver to the Controller
CBL-NETWORK50-0 50 ft (15.2 m) SA bus interface cable to connect WRZ-7860-0 Receiver to the Controller
CBL-NETWORK75-0 75 ft (22.9 m) SA bus interface cable to connect WRZ-7860-0 Receiver to the Controller
CBL-NETWORK100-0 100 ft (30.5 m) SA bus interface cable to connect WRZ-7860-0 Receiver to the Controller
MS-ZFR1811-0 Wireless Field Bus Router
MS-ZFRRPT-0 Power supply for optional MS-ZFR1811-0 Wireless Field Bus Router
Technical specifications
Table 5: WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems technical specifications
Specification Description
Field controller interface Power and SA bus interface between WRZ-7860-0 Receiver and Controller
Supply voltage Nominal 15 VDC through the SA bus; 6.7 VDC to 16.5 VDC required
Current consumption 10 mA maximum
Addressing DIP switches, field adjustable for up to 4,096 unique RF addresses
Ambient limits Operating: 32°F to 122°F (0°C to 50°C), 5% RH to 95% RH, noncondensing
Storage: -40°F to 160°F (-40°C to 71°C), 5% RH to 90% RH, noncondensing
RF band Direct-sequence, spread-spectrum, 2.4 GHz ISM bands
Transmission power 10 mW maximum
Transmission range 150 ft (45 m) maximum indoor line-of-sight;
100 ft (30 m) practical average indoor
Receiver outputs One RJ-12 Port for SA Communication Bus output sensed zone temperature and humidity,
temperature setpoint, and occupancy override data
Temperature sensor accuracy 1.0°F (0.6°C) over the range of 55°F to 85°F (13°C to 29°C);
1.5°F (0.9°C) over the range of 32°F to 55°F (0°C to 13°C) and 85°F to 110°F (29°C to 43°C)
Temperature sensor type Internal 10k ohm Negative Temperature Coefficient (NTC) thermistor
Humidity measurement range Full range 0% RH to 100% RH; calibrated range 10% RH to 90% RH at 74°F (23°C)
Humidity sensor accuracy ±3% RH across the range of 20% RH to 80% RH; ±6% RH across the ranges of 10% RH to 20% RH
and 80% RH to 90% RH in the temperature range of 55°F to 85°F (13°C to 29°C)
Humidity sensor type Planar capacitive polymer sensor
Materials NEMA 1 white plastic housing; UL94-5VB and V-0 Plenum flammability rated
Compliance United States:
Transmission complies with FCC Part 15.247 regulations for low power unlicensed transmitters;
transmitter FCC identification: TBF-MATRIXL or OEJ-WRZRADIO
Canada:
Industry Canada IC:5969A-MATRIXL or 279A-WRZRADIO
Europe:
CE Mark – Johnson Controls declares that this product is in compliance with the essential
requirements and other relevant provisions of the RED, EMC, LVD, and RoHS Directives.
Australia and New Zealand (NZ):
Australia/NZ emissions compliant;Regulatory Compliance Mark [RCM].
Shipping weight 0.2 lb (0.09 kg)
The performance specifications are nominal and conform to acceptable industry standard. For application at conditions
beyond these specifications, consult the local Johnson Controls office. Johnson Controls shall not be liable for damages
resulting from misapplication or misuse of its products.
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide6

Product warranty
This product is covered by a limited warranty, details of which can be found at www.johnsoncontrols.com/
buildingswarranty.
Software terms
Use of the software that is in (or constitutes) this product, or access to the cloud, or hosted services applicable to
this product, if any, is subject to applicable terms set forth at www.johnsoncontrols.com/techterms. Your use of
this product constitutes an agreement to such terms.
Patents
Patents: https://jcipat.com
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Contact information
Contact your local branch office: www.johnsoncontrols.com/locations
Contact Johnson Controls: www.johnsoncontrols.com/contact-us
WRZ-7860-0 Receiver for One-to-One Wireless Room Sensing Systems Installation Guide 7

© 2020 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision and
are subject to change without notice.
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