BURK Technology STM-4D User manual

STM-4D: ARC Solo Digital Temperature
Module & Sensors
Installation and Operation Manual

STM-4D Installation and Operation Manual Rev B
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Table of Contents
Introduction................................................................................................................................ 2
Firmware Requirements ......................................................................................................... 2
Unpacking.............................................................................................................................. 2
Extending Sensor Cables....................................................................................................... 2
Daisy-Chaining Sensors......................................................................................................... 2
TEMP–OUTDOOR Sensor..................................................................................................... 3
TEMP–INDOOR Sensor......................................................................................................... 3
TEMP–WALLMOUNT Sensor ................................................................................................ 3
TEMP–STACK Sensor........................................................................................................... 3
Installation.................................................................................................................................. 4
TEMP–OUTDOOR Sensor..................................................................................................... 4
TEMP–INDOOR Sensor......................................................................................................... 4
TEMP–WALLMOUNT Sensor ................................................................................................ 4
TEMP–STACK Sensor........................................................................................................... 5
Remote Control Setup................................................................................................................ 5
ARC Solo ............................................................................................................................... 5
Cable Orientation and Pinouts ................................................................................................... 6
Daisy-Chain Connection of Digital Sensors................................................................................ 7
Specifications............................................................................................................................. 8
Connectors:............................................................................................................................ 8
Temperature Range: .............................................................................................................. 8
Cables:................................................................................................................................... 8
Getting Help............................................................................................................................... 9
Warranty.................................................................................................................................... 9

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Introduction
The STM-4D ARC Solo Digital Temperature Module connects up to four digital temperature sensors to
the ARC Solo remote control system utilizing the rear panel SENSORS port and a supplied 4-way RJ11
Splitter.
Temperature output is user selectable to Fahrenheit or Celsius, based on the user setting in the setup
section of the ARC Solo web page.
Firmware Requirements
The ARC Solo must have firmware 1.0.58 or higher to support the SENSORS One-Wire port for
connecting your digital sensors.
Unpacking
The following items are included with your purchase of STM-4D:
•TEMP-OUTDOOR Digital Temperature Sensor
•RJ11 4-way splitter
•License key to activate the Sensors port on your ARC Solo
Extending Sensor Cables
Sensor cables up to 1000 feet long are supported without measurement degradation. You can extend
any of the sensors with a standard RJ-12 (6-conductor) or RJ-11 (2-conductor) cable. Ensure that the two
center pins (3 and 4) are connected; connection of the remaining pins is not required. Digital sensor
cabling may also be extended using RJ12 couplers, available from Burk Technology
Daisy-Chaining Sensors
Digital sensors may be daisy-chained to allow multiple sensors on a single wire run. See Daisy-Chain
Connection of Digital Sensors for wiring details.

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TEMP–OUTDOOR Sensor
The TEMP-OUTDOOR digital outdoor temperature sensor is included with
the STM-4D, and is intended for general purpose monitoring of equipment
or ambient temperatures.
The TEMP-OUTDOOR sensor is attached to 25’ of cable with an RJ-12
connector on the end. The sensor has a mounting ring and gasket to
accommodate #6 or #8 hardware. The sensing elements are sealed for added protection from dirt and
moisture.
TEMP–INDOOR Sensor
The TEMP-INDOOR Sensor is a general-purpose, digital, indoor temperature sensor
tailored for monitoring ambient temperatures within a room or in an equipment
rack. Cables are not supplied with this sensor —order Burk’s 25’ 6-conductor cable
with RJ-12 connectors on both ends (part number SENSOR CABLE) or supply your
own.
TEMP–WALLMOUNT Sensor
The TEMP-WALLMOUNT Sensor is housed in a 2 5/8” x 5” enclosure with air vents to
facilitate sensing of the environment.
14’ of cable is provided with an RJ-12 connector on one end. The TEMP-INDOOR has a
large, easy to connect barrier strip that accommodates flat or Phillips type
screwdrivers.
TEMP–STACK Sensor
The TEMP-STACK Sensor is a digital stack temperature sensor
designed for sensing heat within the air ducting of your equipment.
The TEMP-STACK Sensor is attached to 25’ of cable with an RJ-12
connector.
The sensor is mounted in the tip of a 3/8” diameter chrome tube. The supplied mounting hardware
consists of a base and a compression fitting to allow the sensor to be secured at variable depths. This
allows the installer to locate the sensor up to 9 1/2” from the equipment wall, well within the airflow
being monitored.

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Installation
Temperature sensors use RJ12 jacks for easy connection to the RJ splitter. Use the supplied 4-way RJ
splitter or you can use the SENSORS port with couplers and splitters.
TEMP–OUTDOOR Sensor
1. Attach the ring of the TEMP-OUTDOOR with the supplied #6 sheet metal screw, or use any existing
post, hook or machine screw.
2. Route the cable to the ARC Solo.
3. Plug the connector of the TEMP-OUTDOOR into one of the four available input jacks on the RJ11
Splitter. If an extension cable is required, only the center two conductors of an RJ12 cable need to
be extended, corresponding to pins 3 and 4 on the RJ12 connector.
TEMP–INDOOR Sensor
You can use the Burk 25’ 6-conductor cable (part number SENSOR CABLE) to connect the sensor to the
ARC Solo. If a different cable is used, note that only two conductors are required, corresponding to pins
3 and 4 on the RJ12 connector. The cable must reverse the connections from one end to the other so
that pin 4 on the TEMP-INDOOR sensor connects to pin 3 on the ARC Solo splitter and pin 3 on the
TEMP-INDOOR sensor connects to pin 4 on the ARC Solo splitter.
1. Secure the sensor in the desired location and connect an RJ12 cable.
2. Route the cable to the ARC Solo splitter.
3. Plug the connector of the TEMP-INDOOR into one of the four available input jacks on the splitter.
TEMP–WALLMOUNT Sensor
The TEMP-WALLMOUNT comes with a 14’ cable prewired to its internal terminal block, as shown below:
Terminal
Usage
1
No Connection
2
Red
3
Green
4
No Connection
For long cable runs, you can supply your own wiring.
1. Position the back half of the enclosure against the surface where the TEMP-WALLMOUNT will
mount.
2. Using the enclosure as a template, mark reference circles at each of the two mounting slots and the
cable entry point.

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3. Set aside the enclosure and drill a hole at the cable entry location.
4. Mount two screws in the wall, or into wall anchors, leaving at least 1/8” from the wall to the
underside of the screw head.
5. Test fit the enclosure back half against the wall. Check for a secure fit, still allowing for removal of
the TEMP-WALLMOUNT from the wall.
6. From the location of the ARC Solo RJ splitter, route the TEMP-WALLMOUNT cable through the wall
and the rear of the enclosure. The length of the cable does not affect calibration, and it may be
extended as required.
7. Attach the cable to the terminal block on the front half of the TEMP-WALLMOUNT.
8. Secure the two halves of the TEMP-WALLMOUNT using the 3/4” screws, being careful not to over
tighten them.
9. Place the TEMP-WALLMOUNT against the wall and secure it to the mounting screws.
10. Plug the connector of the TEMP-WALLMOUNT into one of the four available input jacks on the ARC
Solo RJ splitter.
TEMP–STACK Sensor
1. Select a location on the equipment ducting that is flat and able to support the weight of the TEMP-
STACK and its mounting hardware. Make certain there are no obstructions on the inside of the
ducting or cavity.
2. Using the mounting base as a template, mark the location of all mounting holes.
3. Drill or cut a hole approximately 3/4” in diameter for the TEMP-STACK probe.
4. Thread the 3/8” brass pipe fitting onto the base, and secure the base to the surface using the
supplied sheet metal screws.
5. Insert the TEMP-STACK into the brass mount and secure it with the locking nut. Be certain to not
tighten excessively, as this may deform the compression sleeve. Check for a secure fit, still allowing
for adjustment of the probe depth.
6. Plug the connector of the TEMP-STACK into one of the four available input jacks on the ARC Solo
splitter.
Remote Control Setup
ARC Solo
•To enter your license key, go to the ARC Solo web page and select System/Basic Settings. Enter
your license key in the Sensors Authorization box.
•To select between Fahrenheit or Celsius, go to the ARC Solo web page and select System/Basic
Settings in firmware version 1.0.57 or System/Sensors in firmware version 1.0.58 or higher.
•To map the sensor to a meter channel, go to the ARC Solo web page and select system/sensors.
Use the provided drop-down boxes to assign each active temperature sensor to an ARC Solo
meter channel.
No calibration is necessary. Please refer to your ARC Solo manual for detailed instructions on meter
setup.

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Cable Orientation and Pinouts
The use of telephone style connectors for the sensors makes it possible to use standard
telephone cables when connecting sensors to ARC Solo. However, it is important to verify the
wiring of the cables to ensure proper operation.
The designation RJ25 or RJ12 refers to a 6-pin modular telephone connector with all six pins
wired. This connector configuration is also referred to as 6P6C indicating six-position, six-
conductor.
Certain telephone cables use “crossover” wiring in which pin 1 at one end of the cable connects
to pin 6 at the far end, pin 2 connects to pin 5, and pin 3 connects to pin 4 as shown below:
Crossover Wiring
Burk’s 25’ SENSOR CABLE follows this convention. A crossover cable such as Burk’s SENSOR
CABLE must be used for the temp sensors to operate correctly.
The RJ12 Coupler supplied by Burk also has crossover wiring from one connector to the other.
Certain sensors including the TEMP-STACK, TEMP-OUTDOOR and TEMP-WALLMOUNT
come pre-wired with a cable terminated in a male RJ12 connector. These connectors may be
plugged directly into the front panel of the Climate Guard. If it becomes necessary to extend the
length of one of these cables, care must be taken not to reverse the connector wiring. Non-
reversing extension cables can be created by combining a SENSOR CABLE with an RJ12
COUPLER. Since each of these has crossover wiring, they provide a straight-through
connection from end to end when connected together.
Sensor Cable RJ12 Coupler

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In other cases, such as the daisy-chain connection of multiple temperature or humidity sensors,
a straight-through cable is required. In this type of cable, pin 1 at one end of the cable connects
to pin 1 at the far end, pin 2 connects to pin 2, and so forth, as shown below:
Straight-through Wiring
The Burk 25’ SENSOR CABLE – DAISY CHAIN and RJ12 SPLITTER each use straight-through
wiring.
Daisy-Chain Connection of Digital Sensors
Multiple digital temperature sensors can be connected to ARC Solo using a daisy-chain
arrangement. This can be accomplished by first plugging one RJ12 SPLITTER into each TEMP-
INDOOR as shown below:
Plug one RJ12 Splitter into each Temp-Indoor Sensor
Sensor Cable –Daisy Chain RJ12 Splitter

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To connect multiple sensors, use a single SENSOR CABLE from the ARC Solo SENSORS port
to the first digital sensor. Then use a SENSOR CABLE –DAISY CHAIN to connect each
additional sensor to the daisy-chain as shown in the diagram below.
Daisy-Chain Wiring of Digital Sensors
Specifications
Connectors:
4 RJ12 jacks for use with TEMP-INDOOR, TEMP-OUTDOOR, TEMP-STACK, and TEMP-WALLMOUNT
sensors.
Temperature Range:
Sensors: -55°C to +125°C, ± 0.5C from –10C to 85C
Cables:
TEMP-INDOOR: Requires Burk SENSOR CABLE, not included
TEMP-WALLMOUNT: Includes 14’ prewired cable
TEMP-OUTDOOR: Includes 25’ prewired cable
TEMP-STACK: includes 25’ prewired cable

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Getting Help
For technical support, please email supp[email protected]om or call our direct technical support line at 978‐
486‐3711. We will be glad to assist you. The technical support office is open Monday – Friday, 9AM to
5PM Eastern Time.
Warranty
Burk Technology, Inc. warrants the STM-4D, TEMP-INDOOR, TEMP-OUTDOOR, TEMP-WALLMOUNT AND
TEMP-STACK to be free of defects in materials and workmanship for a period of 24 months from the
date of purchase. Equipment will be repaired or replaced at the option of Burk Technology and returned
freight prepaid to the customer. Damage due to abuse or improper operation or installation of the
equipment or caused by fire or flood or harsh environment is not to be covered by this warranty.
Damage in shipping is not the responsibility of Burk Technology. A return authorization must be
obtained before returning any equipment. Materials returned under this warranty must be shipped
freight prepaid and insured in the original shipping carton or suitable substitute to Burk Technology,
Inc., 7 Beaver Brook Road, Littleton, MA 01460. Repairs not covered under this warranty will be made at
prevailing shop rates established by Burk Technology.
THE WARRANTY SET FORTH ABOVE IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. BURK TECHNOLOGY, INC. SHALL NOT BE LIABLE TO ANY PARTY FOR ANY
INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF THIS
EQUIPMENT.