Network Thermostat NetX NT-DRS User manual

240322-01
NetX™ NT-DRS
Duct Remote Sensor
INSTALLATION MANUAL
WWW.NETWORKTHERMOSTAT.COM
TABLE OF CONTENTS
BEFORE YOU START 1
WHAT IS IN THE BOX? 1
REMOTE SENSOR CALLOUT 1
MOUNTING LOCATIONS 1
LED STATUS 3
ONE (1) YEAR LIMITED WARRANTY 3
SPECIFICATIONS 3
TYPICAL WIRING DIAGRAM 4
INSTALL STEPS
BTIP: If you are replacing an existing sensor, take a picture of
the wiring for reference.
1. Install the X7 or X5 series thermostat according to the
instruction manual supplied with it.
Install cable (Red Arrow) from the thermostat to the remote
sensor location. Maximum distance is 300ft. (90m).
Use CAT5 or CAT5e unshielded, or 1-Pair Twisted Shielded
Cable with Drain and nominal capacitance of 12 pF/ft or less.
Use riser or plenum jacket as required by local code.
CCAUTION: Disconnect power to the thermostat or remove
thermostat faceplate before connecting either end of the
cable.
BEFORE YOU START
Please read the entire install manual. The NT-DRS will need to be
correctly wired and congured for proper operation.
INTRODUCTION
The Network Thermostat NT-DRS duct remote sensor is designed
to sense air temperature at locations remote to the X7 or X5
series thermostats. Up to three (3) NT-DRS sensors can be used
on the X7 or X5 series thermostats in addition to multiple NT-URS
sensors congured for separate functions.
WHAT IS IN THE BOX?
●(1) NT-DRS Universal Remote Sensor
●(1) Installation Manual
REMOTE SENSOR CALLOUT
1Number of Sensors Jumper
2Wiring to Thermostat
3Wiring to external probe
4Remote Sensor Conguration DIP Switches
5Diagnostic LED
MOUNTING LOCATIONS
Due to the weatherproof enclosure, the NT-DRS can be mounted
in an interior or exterior location.
1
2
3
4
5
2. Once a suitable spot is
selected, drill a 9.5 - 12 mm
(3/8” - 1/2“) hole for the probe.
Then Mount the NT-DRS. A
foam gasket on the back of the
enclosure provides a tight seal
against any air leaks.
3. The enclosure has a hinged cover
with a latch. Open the cover by
pulling slightly on the latch on the
right side of the enclosure. At the
same time pulling on the cover.
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10.Reattach the thermostat faceplate to the backplate. (See your
thermostat installation manual for instructions.)
For X-Series thermostats, the
remote sensor will display in
the upper left of the display.
Tap on the upper left of the
display to cycle through the
different connected sensors.
The names of the sensors will
display in the dot matrix area
of the display.
11.When all sensors have been
added, snap close the cover
on the NT-DRS.
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SENSOR TYPE CONFIGURATION
AUX 1
The external
probe connects
to 2-screwless
terminals
AUX 3
The external
probe connects
to 2-screwless
terminals
AUX 2
The external
probe connects
to 2-screwless
terminals
4. Run the sensor cable from the thermostat to the sensor
location. A 1/2" NPT threaded connection hole is provided in
the bottom of the enclosure.
ANOTE: Up to three (3) NT-DRS can be daisy chained.
ANOTE: A 1/2" NPT threaded connection hole is provided in
the bottom of the enclosure. If installing in an environment that
needs to be water tight, screw the EMT or cable gland
connector (not included) in until tight. It is recommended that
weatherproof EMT or cable gland ttings be used.
5. After mounting the NT-DRS, make sure there is enough wire to
nish the wire connections. Push any extra wire back into the
enclosure cavity.
6. Strip 1/4 inch of insulation from three wires at the remote
sensor. Install the wires in the terminals using the table below.
Cat5/Cat5e cable color code:
RS+V = Green with White Stripe
RS2 = Brown with White Stripe
RS1 = Green
Shielded cable color code:
RS+V = Color 1 in pair
RS2 = Drain wire
RS1 = Color 2 in pair
ANOTE: the wire color going to each terminal. The order of
the wires on the thermostat are not the same as the sensor.
7. Connect the wires on the thermostat backplate to the terminals
labeled RS1, RS2 and RS+V. Make sure each terminal on the
sensor is wired to the terminal with the same name on the
thermostat.
8. Set the DIP Switches on
the bottom right of the
sensor to the appropriate
sensor type.
9. Set the jumper to match the total number of sensors directly
connected to the thermostat; 1-2, 3-5, or 6+ sensors.
CWARNING: Do Not Count The Additional NT-URS Sensors
Used For Indoor Averaging.
Sensor Counting Example 1:
You are connecting an INDOOR sensor, OUTDOOR sensor,
AUX1, and AUX2. The sensor count is 4 and the correct
jumper conguration is the middle jumper 3-5.
Sensor Counting Example 2:
You are connecting 6 INDOOR sensors (Averaged) and one
INDOOR HUMIDITY sensor. The sensor count is 2 and the
correct jumper conguration it the top jumper 1-2.
Sensor Counting Example 3:
You are connecting 3 INDOOR sensors (Averaged), OUTDOOR
Sensor, AUX1, AUX2, AUX3, and a INDOOR HUMIDITY
Sensor. The sensor count it 6 and the correct jumper
conguration is the bottom jumper 6+.
1-2
3-5
6+
NUMBER OF SENSOR
CONFIGURATION
MULTIPLE NT-DRS SENSOR CONFIGURATION
You can connect up to three (3) NT-DRS sensors to provide
discrete duct temperature measurements.
Maximum distance for all sensors is 300 ft. (90m) from the NetX
thermostat. Follow the instructions and diagrams to connect the
additional NT-DRS sensors.
ANOTE:: Each NT-DRS sensor can be assigned to the AUX 1,
AUX 2 or AUX 3 inputs.
1. Wire the rst sensor using the single sensor instructions.
NT-DRS
First NT-DRS in chain
Set as AUX 1 Sensor
ANOTE: See
Page 2 Step 9 for
proper settings

240322-01
3. Reinstall the thermostat
faceplate on to its backplate.
Check proper operation by
watching the LED blink
pattern as outlined in the LED
Status section. Repeat for
each sensor.
LED STATUS
The NT-DRS includes a Diagnostic LED that can help you
troubleshoot your installation and sensor operation.
LED Off:
LED OFF indicates no power to the NT-DRS or thermostat. Check
wiring of your sensor and the thermostat for problems. Fix as
necessary.
LED On Solid During Power-Up:
On power-up the LED will turn on solid until the NT-DRS
successfully communicates with the thermostat. If the connection
is successful, the LED will blink according to its conguration. If
the remains on, there is a communication problem. Check wiring
and x as necessary.
LED On Solid After Power Up:
If the NT-DRS loses connection with the thermostat for 60
seconds, the LED will turn on solid. Check the wiring and x as
necessary. Cycle power cycle power and recheck the LED status.
LED Triple Blink (Probe Operation)
The NT-DRS LED will blink three times when the thermostat
requests data. This occurs approximately every 16-20 seconds.
LED Fast Continuous Blink (Lost Probe)
If the NT-DRS loses communication with the probe, the LED will
continually blink fast. Check wiring and probe and x as
necessary.
ANOTE: In this condition, the NT-DRS will stop reporting until
the communication with the probe is xed.
ONE (1) YEAR LIMITED WARRANTY
Network Thermostat™ warrants to the original purchaser that
this product will be free from defects in workmanship and
materials for a period of ve years from the date of purchase
with proof of purchase.
Warranty Limitations
This warranty begins on the date of purchase.
Warranty is Void if:
●The date code or serial number is defaced or removed.
●The product has a defect or damage due to product
alteration, connection to an improper electrical supply,
shipping and handling, accident, re, ood, lightning or
other conditions beyond the control of the manufacturer.
●The product is not installed according to the manufacturers
instructions and specications.
Owner’s Responsibility
●Provide proof of purchase.
●Provide normal care and maintenance.
●Pay for freight, labor and travel.
●Return any defective product.
●In no event shall the manufacturer be liable for incidental
or consequential damages.
This warranty gives you specic legal rights and you may have
others which vary by state and/or province. For example,
some states and/or provinces do not allow the exclusion or
limitation of incidental or consequential damages, so this
exclusion may not apply to you. The manufacturer’s continuing
commitment to quality products may require a change in
specications without notice.
SPECIFICATIONS
Rated Voltage:
20V to 30VAC, 24VAC nominal
Auxiliary Temp Sensor Range:
AUX1, AUX2, AUX3: -40°F to +200°F (-40°C to +93°C)
Measurement Accuracy:
Temperature: ± 1.0°F (±0.5°C);
Terminations:
RS1 - Data, RS+V – Power, RS2 – Return, 1 & 2 – External
Temp Sensor Leads, 1-2, 3-5, 6+ Sensors
Dimensions:
Case: 3.0”H x 3.25”W x 2.05”D (76.2mm x 82.5mm x 52mm)
Probe: 8.0” (203.2mm)
Approved Cable Types:
CAT5 or CAT5e unshielded, or 1-Pair Twisted Shielded Cable
with Drain and nominal capacitance of 12pF/ft or less. Use
riser or plenum jacket as required by local code.
Maximum 300ft Total Sensor Cable Length per Thermostat
Page 3
X-SERIES
2. Connect wires to each additional sensor in the following
manner.
NT-DRS
Additional NT-DRS Sensors
Set as AUX 2 Sensor
NT-DRS
First NT-DRS in chain
Set as AUX 1 Sensor
Wiring To
Next Sensor
(If needed)

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TYPICAL WIRING DIAGRAM
OFF
# Sensors
1-2
3-5
6+
UP UP
OFF ON
# Sensors
1-2
3-5
6+
UP UP
OFF ON
# Sensors
1-2
3-5
6+
UP UP
AUX 1
GENERAL WIRING CONNECTIONS FOR NT-DRS
NT-DRS
#1
X5 or X7
THERMOSTAT
AUX 2
NT-DRS
#2
AUX 3
NT-DRS
#3
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
UP UP
UP UP UP UP UP UP UP UP UP UP UP UP
Secondary Internal Temperature Sensors
NT-DRS
Set as
AUX 2 Temp
NT-DRS
Set as
AUX 3 Temp
NT-DRS
Set as
AUX 1 Temp
NT-URS
Set as INDOOR
Sensor
NT-URS
Set as OUTDOOR
Sensor
RS2 RS+V RS1
To Thermostat
General NetX RSBus Wiring Instructions
●Only 1 Sensor for each type per thermostat except for INDOOR Sensor
●All non indoor sensors and 1st INDOOR sensor wired to RS1-to-RS1, RS2-to-RS2 and RS+V-to-RS+V
●Additional INDOOR temperature sensors must be wired AVG-to-RS1, RS2-to-RS2 and RS+V-to-RS+V
●Sensors can be placed in any order in the daisy-chain, except for multiple INDOOR sensors
Additional NetX
RSBus Sensors
AUX 1
DIP 1, 2 ON
DIP 3, 4 OFF
AUX 2
DIP 3 ON
DIP 1, 2, 4 OFF
AUX 3
DIP 1, 3 ON
DIP 2, 4 OFF
The external probe connects to screwless terminals 1 & 2
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