Note:
Not all features shown on Figure 1 are available on all models.
Special tools needed
• 1.6 mm (1/16 in.) Allen wrench or Johnson Controls
®
T-4000-119 Allen-Head Adjustment
Tool (order separately) for the tamper-resistant set screw that secures the transmitter to the
mounting base
• straight-blade screwdriver (or coin) for unlocking the sensor housing from the mounting base
locking tab
Mounting
The FX-WRZ Series Sensors can be surface-mounted using the adhesive tape pieces affixed to the
back of the sensors.
Location considerations
Temperature sensor considerations
When locating an FX-WRZ Series Sensor, follow the same best practices used to locate a hard-wired
temperature control, sensor, or thermostat:
• Mount the sensor on an interior wall where it is easily accessible, at least 1.4 m (55 in.) above the
floor, in an area where the temperature is representative of the entire controlled space.
• Avoid enclosed or recessed locations and locations behind curtains, doors, or other obstructions
to the controlled space.
• Avoid locations near entry foyers, doors, windows, supply air ducts, and pipes.
• Avoid locations that are exposed to drafts, direct sunlight, and other sources of heat or cooling.
• Avoid locations where the sensor could be exposed to excessive vibration.
Wireless transmission considerations
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 FX-ZFR18xx Series Router or FX-
WRZ7860 Receiver.
• For best signal transmission, locate the sensor at least 51 mm (2 in.) away from any metal
obstructions.
• Wherever possible, locate the sensor in the direct line of sight to the FX-ZFR18xx Series Router or
FX-WRZ7860 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 FX-ZFR18xx Series Router or FX-WRZ7860 Receiver.
• Do not locate the sensor in recessed areas or metal enclosures.
• In mesh network applications, install the sensors within range of two or more FX-ZFR18xx Series
Routers. Redundancy in the layout provides the best reliability in wireless installations.
• Do not mount the sensor closer than 0.61 m (2 ft) or farther than 30 m (100 ft) from the FX-
ZFR18xx Series Router or 45 m (150 ft) from the FX-WRZ7860 Receiver.
3
Temperature and Relative Humidity FX-WRZ Series Wireless Room Sensors Installation Instructions
