Installation Instructions
Document No. 540-742
January 5, 2012
Series 1000 Room Temperature Sensors,
10KΩ Thermistor (TEC and LTEC)
Item Number 540-742+3, Rev. FA Page 1 of 4
Product Description
These sensors work with the Terminal Equipment
Controller (TEC) and L
ONMARK
®
compliant Terminal
Equipment Controller (LTEC). The sensors use a 10K ohm
thermistor to detect temperature. The effective sensing
range is 55°F to 95°F (13°C to 35°C).
Sensors that are compliant with
LONWORKS
®
technology
are distinguishable by the LTEC name next to the MMI
jack at the bottom of the unit.
CAUTION:
TEC and LTEC sensors and cable
assemblies are not interchangeable.
NOTE:
Either sensor can be mounted on electrical
boxes, stud-type mounting brackets, or drywall.
Obtain the necessary mounting hardware and
follow the appropriate mounting procedures for
the type of installation required.
Product Numbers
Table 1. Product Numbers and Descriptions.
Product Numbers
*
TEC **
TEC No
Logo
LTEC
LTEC
No Logo
Description
540-660 540-661 — 587-550A Sensing only
540-670 540-671 550-184 587-554A Override and
setpoint
540-680 _ 550-187 587-557A Override,
setpoint and
temperature
display
* Product number suffixes indicate the sensor color:
A = desert beige, B = white.
** On TEC sensors only, the suffix also indicates the
display's temperature scale,
C = °C, F = °F
(for example, 540-670FA for °F, desert beige).
For LTEC, see LTEC Temperature Scale Selection.
Required Tools
• Phillips size 1 or 2 screwdriver
• 1/16-inch Allen wrench, (Part Number 192-632,
package of 5)
• Small and medium flat-blade screwdrivers
• Medium-duty electric drill
• 3/16-inch drill bit
• 1-inch hole saw
• Hammer
• Utility knife
• Wire cutters
• Small level
• Tape measure
• Marker or pencil
If using non-preterminated cables (or if cables are
damaged), you also need:
• Room sensor connector tool (RJ-11 crimping tool)
• Room sensor connector kit
Expected Installation Time
20 minutes
Prerequisites
• Appropriate field wiring (standard six-conductor room
sensor cables, plenum or non-plenum as required),
within the maximum wiring run length for the individual
field panel or equipment controller must be installed.
The maximum recommended length is 100-feet
(30.5 m).
• See
Table 4 for cable product numbers.
• All wiring must comply with National Electric Code
(NEC) and local regulations.
Figure 1. Room Temperature Sensor
(Shows All Options).
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