t.a.c. STR Series User manual

1 (2) 0-003-2307-1(EN)
STR250
TECHNICALDATA
Subjectto modification.
Wall Module 24 Oct 2003
Ambient conditions:
Storage.......... -20 to +80 ºC (-4 to 176 ºF) max 90% RH
Operation .........0 to +50 ºC (32 to 122 ºF) max 90% RH
Mechanical
Enclosure rating........................................ IP20 / NEMA1
Enclosure material .................................PC/ABS plastic
Weight ........................................................85 g (0.19 lb)
Dimensions:
Please refer to figure overleaf
Standards:
EMC .......................................EN 50081-1, EN 50082-1
FCC part 15 class B
Safety Standard ................................. UL 916 (pending)
Flammability rating .........................................UL 94V-0
Wiring
Cable type ..................................Twisted pair, shielded
Maximum capacitance, conductor-conductor....... 30pF
Maximum capacitance, conductor-shield............. 55pF
Cable size .............................. Min 0.25 mm2 (24 AWG)
Distance ............................................. Max 30 m (100 ft)
The STR is a series of wall modules optimized for public
facilities such as office buildings, hotels, hospitals, schools
and shopping malls. Their pleasant appearance and well-
designed interface make them suitable for any
contemporary building. They are easy to operate and
install.
STR wall modules are designed to be mounted directly on
the wall or onto a variety of back-boxes/J-Boxes. The plug-
in concept makes wiring quick and easy.
Temp range/resolution .......................Controller-dependent
Temperature accuracy ................................ 0.6 ºC (1 ºF)
Sensor element .................................. 10kW Thermistor
Data communication
Serial Proprietary ............................STR250 - Controller
Power Requirements
+12V DC ................................... supplied from controller
Part number:
STR250 ........................................................ 0-046-0330
The STR250 replaces the I/STAT LCD with regard to major
functionality such as indoor and outdoor temperature
indication, setpoint adjustment, bypass mode and fan
speed commands.
The STR250 can be used with the 7728, MRs, and Xenta
102-AX controllers.

2 (2)0-003-2307-1 (EN)
Controller-Dependant
The functions of the STR250 are
controller- dependent. All local
configuration is carried out using an
M/STATmodule.
Adjusting the Room Temperature
Use the Select button to step through
the menu until the Up and Down
arrows are displayed. In this mode,
change the temperature setpoint using
the Increase/Decrease buttons.
Monitoring the Temperature
Use the Select button to step through
the menu until the symbols for indoor
or outdoor temperature are displayed.
Indoor Outdoor
Temperature Temperature
Adjusting the Fan Speed
Use the Select button to step through
the menu until the fan symbol is
displayed. If the fan is controllable, use
the Increase/Decrease buttons.
FanAuto
FanOff
Fan Speed 1
Fan Speed 2
Fan Speed 3
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116 mm (4.6 ")
59 mm (2,32")
24 mm (0.9")
84 mm (3.3")
82 mm (3.2")
DIMENSIONS
CONFIGURATION
MAINTENANCE
No maintenance is required for this
product. If necessary, the wall module
may be cleaned with a soft cloth.
All local configuration steps for the
controller are carried out using an
M/STAT module plugged into the core
panel of the STR250.
Bypass Button
The Bypass button is used to
force the controller into
occupied mode for a
predefined duration.
Select Button
The Select button is used to
step through the menu.
Increase Button
The Increase button is used
to increase values, when
available.
Decrease Button
The Decrease button is used
to decrease values, when
available.
MOUNTING
The STR250 can be mounted directly
onto the wall or fitted onto a wide
variety of back-boxes/J-boxes.
WIRING
The wall module uses a three-wire
installation. The wiring is easily
accessible thanks to the plug-in
concept.
USER INTERFACE
Front-panel
Core-panel