Transmission Variables; Wireless Sensor Specifications - Trane BCHE Installation, Operation And Maintenance Manual

Then the receiver and sensor begin operation at the
appropriate channel and power level (see
Receiver for Readiness," p.
Address set from 001 to 999 (and not changed since
most recent power-up) and receiver is associated with
a sensor
• LED5 is constantly On, indicating power is applied and
the receiver is functional.
• Zone temperature and setpoint default to 72.5°F. WDS
only: Heating setpoint defaults to 70.5°F, Fan = Auto,
System = Off.
• The receiver waits for a broadcast transmission from its
associated sensor. When a transmission is received,
the receiver positions its zone temperature and setpoint
outputs appropriately.
• If the receiver does not receive a communicated signal
from its associated sensor within 35 minutes, zone
temperature and setpoint outputs fail, generating a unit
controller alarm.
Note: Once a receiver communicates to a WZS sensor,
the receiver disables (opens) its zone setpoint
output indefinitely.

Transmission Variables

Sensor transmission time variables are as follows:

Wireless Sensor Specifications

Table 23. Wireless sensor specifications
Component
Sensor operating temperature
Receiver operating temperature
Storage temperature
Storage and operating humidity range
Accuracy
Resolution
Setpoint functional range (WDS only)
Receiver voltage
Receiver power consumption
Housing
Mounting
Sensor battery
(a)
Range
Output power
Radio frequency
BCX-SVX002A-EN
"Observing
74).
Type
32°F to 122°F
-40°F to 158°F
-40°F to 185°F
5% to 95%, non-condensing
0.5°F over a range of 55ºF to 85°F
0.125°F over a range of 60°F to 80°F. 0.25°F when outside this range
50°F to 89.6°F
24 V nominal ac/dc ±10%
<1 VA
Polycarbonate/ABS blend, UV protected, UL 94-5VA flammability rating, suitable for application in a
plenum
3.24 in (8.26 cm) for 2 mounting screws (supplied)
(2) AA, 1.5 V, 2800 mAh, lithium, 5-year life, UL listed
Open range: 2,500 ft (762 m) (packet error rate = 2 percent)
Usable: 200 ft (61 m)
Typical: 75 ft (23 m)
100 mW
2.4 GHz (IEEE Std 802.15.4-2003 compliant)
(2405 to 2480 MHz, 5 MHz spacing)
• The maximum time between sensor temperature
transmissions is 15 minutes.
• The minimum time between sensor temperature
transmissions is 30 seconds.
• The minimum time for transmitting temperature setpoint
changes is 10 seconds.
Note: If a sensor transmits a message to the receiver and
the receiver does not reply, the sensor will
retransmit the message to the receiver every 30
seconds until communication to the receiver is re-
established.
Sensor temperature time variables are as follows:
• The minimum change in zone temperature required to
force a sensor transmission is:
– 0.2°F when the temperature range is between 60°F
and 80°F
– 0.5°F when the temperature range is between 32°F
and 60°F or between 80°F and 122°F
• The minimum change in temperature setpoint required
to force a sensor transmission is: 0.1°C for a model
WDS sensor
Installation - Controls
77