Installation and Maintenance Manual

Diagnostics
UNT-SVX07D-EN 119
shown in Tab l e 49, p. 119 .
• On model WDS, push the Test button on the sensor
(see location
on Figure 43, p. 117 ). In response, a
battery test symbol appears on the display. The
symbol show
n indicates battery life expectancy (see
Tab l e 50).
24 V Power Status Indicator (Wireless Controls
LED5 on the receiver of all models (Figure 42, p. 117) lights
and stays constantly On when 24 V power is normal.
Using the Wireless Sensor System to Check
Signal Strength on a Site (Wireless Controls)
Follow these steps to check the signal strength on a site:
1. Power up a receiver with a 24 V transformer (user
supplied)
2. Associate the sensor to a receiver of the same model
intended for the
job
3. Place the receiver at the desired location
4. Place or hold the sensor at th
e desired location
5. Press the Test button (S5) on the sensor and observe
the signal
strength as indicated by LED1, LED2, and
LED3 on model WZS, and on the display on model
WDS (Figure 43, p. 11 7 ).
For more information on interpreting the LEDs
and the
display symbols that indicate signal strength, see “Testing
Signal Strength (Wireless Controls),” p. 118.
Replacing Sensor Batteries (Wireless Controls)
Sensor battery type, length of life, and installation are
addressed in this section.
Battery Type (Wireless Controls)
Use two non-rechargeable 1.5 V lithium AA batteries in the
sensor. To maintain UL rating, use only UL-listed lithium
batteries. The sensor ships with Energizer
®
L91 batteries
already installed. Replacement batteries are available at
Trane Service Parts Centers (p/n X13770035010) or other
local suppliers.
Battery Life (Wireless Controls)
Battery life is five years under normal conditions. If the
sensor is not used for an extended period of time, do one
of the following:
• Set the sensor address to 000
to place the sensor into
a low-power hibernation mode.
• Remove the batteries
Notes:
• If lith
ium batteries are temporarily unavailable,
alkaline batteries can be used. However, alkaline
battery life is very short by comparison.
• The battery life for a model WDS may decrease with
extended LCD display activity.
Battery Installation (Wireless Controls)
Table 49. Battery status: LED5 on model WZS sensors
(wireless controls)
User
action LED state (WZS) Indicates...
Press
Test
button
Solid green for 5 seconds Battery is adequate for proper
operation.
Solid red for 5 seconds 25% battery life left. Batteries should
be replaced.
No light Batteries life expired or not installed
properly, or sensor is defective.
None Blinking red: 1-blink
pattern
(a)
repeated 5
times. Cycle repeats
every 15 minutes.
(a) Blink pattern is On for 1/4 s, Off for 3/4 s, with 2 s Off between repe-
titions.
Approximately 14 days of operation
remain before the battery is too weak
to power the sensor.
Table 50. Battery status: Battery symbol on model WDS
sensor display (wireless controls)
User
action
Battery
test
symbol Indicates...
Press Test
button
Full battery power.
50% battery life left.
25% battery life left. Replace batteries.
Flashing symbol indicates that approximately 14
days of operation remain before the battery is too
weak to power the sensor.
NOTICE:
Equipment Damage!
The batteries are manufactured in a ready-to-use state.
They are not designed for recharging. Recharging can
cause battery leakage or, in some cases, can cause the
safety release vent to open.
NOTICE:
Equipment Damage!
Do not attempt to hook up the sensor to a power
supply. Equipment damage may result.
WARNING
Prevent Injury!
Batteries can explode or leak and cause burns if
installed backwards, disassembled, charged, or
exposed to water, fire, or high temperature.
UNT-SVX07_-EN.book Page 119 Friday, April 27, 2012 9:40 AM