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appropriate action. In addition, a
twenty-four minute timer is initiated. If a
new zone temperature value is not
received within this time, a sensor
failure indicator is generated.
If all the averaging sensors have failed
and a backup zone sensor serial
number was programmed into the
UCM, the zone temperature value, set
point, and On/Cancel status from that
sensor will then be used for control. The
UCM will continue to monitor the link
for the averaging sensor information. If
received, normal operation is restored
and the sensor failure indicator cleared.
While in many cases a single sensor
and backup sensor are programmed in
the UCM, it is also possible to define up
to three additional optional zone sensor
serial numbers. The UCM will then use
the average of all of the programmed
sensors (except the backup sensor) as
the value representing the space
temperature. Values from sensors that
have been flagged as not reporting
within the last fifteen minutes will not
be used in the calculation. While an
averaging scheme is used to determine
the space temperature when multiple
sensors are used, a weighted average
scheme is used to determine the set
point. This scheme allows the user to
select the relative priority of each zone
sensor for the purpose of determining
the desired set point. However, any of
the sensors may be used to initiate On/
Cancel requests.
Wireless System Installation
Building Location
The receiver should be located centrally
to all of the zone sensors. Large
ductwork, metal covered walls or
reinforced concrete can block the signal
and should be avoided. Elevator shafts
are typically sources of interference and
therefore should also be avoided.
Maximum range is 1000 feet (304.8 m)
line of sight indoors (a maximum of 500
feet (152.4 m) total is recommended).
Setting the Receiver Address
The address is set using the DIP
switches mounted on the receiver. The
receiver is a "COM 4" master and does
not replace a UCM address. Up to 6
receivers may reside on a Communica-
VAV-SVX01B-EN
Wireless VAV
Systems
tion Link when using a CCP and up to 31 receivers may reside on a Communication
Link when using a Tracer Summit.
DIP switches 6 and 7 are not used and should be set to their "ON" position. DIP
switch 8 is the setup/normal switch and is only used when the unit is being assigned
sensors using the set-up tool. When assigning zone sensors to the receiver using the
set-up tool, set DIP switch 8 to the Off (Down) position. During normal operation, DIP
switch 8 should be in the ON (Up) position. The following chart shows the switch
positions for addresses 1 through 31.
Table 5 – VAV Wireless Receiver DIP Switch Settings
UCM
VAV Wireless Receiver DIP Switch Settings
Address DIP 1
DIP 2
1
OFF
ON
2
ON
OFF
3
OFF
OFF
4
ON
ON
5
OFF
ON
6
ON
OFF
7
OFF
OFF
8
ON
ON
9
OFF
ON
10
ON
OFF
11
OFF
OFF
12
ON
ON
13
OFF
ON
14
ON
OFF
15
OFF
OFF
16
ON
ON
17
OFF
ON
18
ON
OFF
19
OFF
OFF
20
ON
ON
21
OFF
ON
22
ON
OFF
23
OFF
OFF
24
ON
ON
25
OFF
ON
26
ON
OFF
27
OFF
OFF
28
ON
ON
29
OFF
ON
30
ON
OFF
31
OFF
OFF
Power Checkout
The receiver has three (3) LEDs.
— Green (Power/operational)
— Yellow (Radio communication activity)
— Red (VAV Link activity)
The green LED will remain on to indicate steady power. The yellow LED will flash to
indicate the receiver is receiving radio communication for the sensors. The red LED
will flash to indicate the receiver has passed the information to the VAV link.
The zone sensor has one (1) LED. It is located next to the service tool connection at
the bottom of the sensor. Pressing the ON or Cancel buttons causes a transmission
to occur and the green LED should flash. This indicates the sensor has power and
should be transmitting.
DIP 3
DIP 4
DIP 5
DIP 6
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
DIP 7
DIP 8
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
ON
ON
ON*
33
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