ZFR1800 Series Wireless Field Bus System Technical Bulletin 15
• All ZFR1811 Routers/Repeaters should be located in the same plane. For
example, if you are mounting the routers/repeaters above a dropped ceiling, all
routers/repeaters must be mounted above the dropped ceiling.
• Avoid configurations where a microwave oven is located between two wireless
devices. Avoid locating the ZFR1810 Coordinator near areas that may contain
a microwave oven, such as an employee break area or cafeteria. At a minimum,
ensure that no microwave ovens are within 6 m (20 ft) of a
ZFR1810 Coordinator.
• For best signal transmission on ZFR1810 Coordinators, which have an external
antenna, vertically orient the external antenna with at least 50 mm (2 in.)
exposed below and clear of any pipes, duct work, or other metal obstructions.
• For best signal transmission on ZFR1811 Routers and WRZ sensors, which
have internal antennas, vertically mount these products.
• Do not mount the wireless Metasys product in recessed areas, metal
enclosures, or shelving units unless the antenna can be positioned outside of
the recessed area or enclosure.
• Locate the wireless Metasys products that are within a wireless network on the
same floor or building level as the associated wireless products in the same
wireless network. For example, locate ZFR1810 Coordinators, ZFR1811
routers, and WRZ sensors on the same floor.
Guidelines for Locating Thermostats and Wireless Sensors
For best temperature sensing and control, follow the same best practices used to
locate a hard-wired temperature control, sensor, or thermostat when locating
wireless sensors:
• 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 wireless products could be exposed to excessive
vibration.
• Locate the wireless products on an interior wall where it is easily accessible, at
least 1.4 m (54 in.) above the floor, in an area where the temperature is
representative of the entire zone.
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