Honeywell TB7200 series User Manual page 7

ZIGBEE WIRELESS SURVEY TOOLKIT FOR TB7200/TB7300/TB7600 SERIES THERMOSTATS
At the Job Site
1. Begin by positioning one of the wireless survey
tools in the proposed location for the WEBs-AX con-
troller.
2. Find the coverage radius for the controller at its pro-
posed location. This coverage radius is the first hop
from the controller. Any thermostat or repeater
should be installed NO FARTHER than 5 hops to
and from the WEBs-AX controller with the wireless
communication card. This is due to the nature of the
ZigBee stack in the wireless controllers. Walk about
WIRELESS THERMOSTAT
4. Next test the signal strength at each location where
a thermostat is to be installed. The signal strength
at each location can be anywhere from 10% to
100%. Testing each proposed thermostat location
ensures no unexpected obstacles or unforeseen
sources of interference will affect each wireless
thermostat at the time of installation.
5. Once all thermostats within the radius have been
tested, place one of the wireless survey tools at the
first cluster of thermostats tested, go to another
cluster of thermostats extending outward from the
radius of the first hop. Locate the boundary where
the signal strength is about 20%. This represents
C
PROPOSED WEBs-AX CONTROLLER WITH WIRELESS COMMUNICATION CARD
Fig. 10. Measuring the radius of the first hop.
the floor where a cluster of thermostats are to be
installed. Locate the boundary where the signal
strength is about 20%.
3. Move to another cluster of thermostats at different
points to determine the radius. This represents the
maximum radius of the first hop where connectivity
is possible based on the building environment and
partition construction. Please note that this distance
can be anywhere from 0 to hundreds of feet (Fig.
10). It's possible that another location may improve
your network performance or that you may require
an additional controller with a wireless communica-
tion card or additional wireless repeaters.
65%
24%
28%
the maximum radius of the second hop where con-
nectivity is possible based on the building environ-
ment and partition construction.
6. Next test the signal strength at each location where
a thermostat is to be installed. The signal strength
at each location can be anywhere from 10% to
100%. Testing each proposed thermostat location
ensures no unexpected obstacles or unforeseen
sources of interference will affect each wireless
thermostat at the time of installation. Fig. 11 shows
the Proposed Site Floor Plan Example with three
hops as indicated by the gray arc (hop 1), the
dashed line arc (hop 2) and the dotted line (hop 3).
7
23%
35%
C
58%
MCR32618
62-2024—03