NetX NT-URS Universal Remote Sensor Installation Guide

network thermostat
NetX™ NT-URS
Universal Remote Sensor
INSTALLATION MANUALwww.networkthermostat.com

BEFORE YOU START

Please read the entire installation manually. The NT URS will need to be correctly wired and configured for proper operation.

INTRODUCTION

The Network Thermostat NT-URS remote sensor is designed to sense air temperature and/or humidity at locations remote to the X7, XS, UP32, or US32 series thermostats. There are several individual temperature sensor types plus one humidity sensor with two options. One of each type of sensor can be used on the X7, XS, UP32, or US32 series thermostats, plus up to six (6) remote INDOOR sensors to provide automatic averaging for the space temperature. The sensors are supplied with an easy­ to-install surface mount enclosure. Optional 2-wire surface-mount sensor and flush mount sensor are available for indoor, plus an outdoor probe and various other probes are available.

WHAT IS IN THE BOX?

• (1) NT-URS Universal Remote Sensor
• (2) 3/16 Drywall anchors
• (2) Mounting Screws
• (1) Installation Manual

REMOTE SENSOR CALLOUT

1. Number of Sensors Jumper
2. Wiring to Thermostat
3. Wiring to an external probe
4. Remote Sensor Configuration DIP Switches
5. Diagnostic LED

MOUNTING LOCATIONS

For proper operation, the sensor should be mounted in an interior location.
For room temperature sensing, it must be at least 18″ (46 cm) from any outside wall, and approximately 5′ (1.5 m) above the floor in a location with freely circulating air of an average temperature.
Be sure to avoid the following locations:

• Behind doors or in corners where freely circulating air is unavailable
• Where direct sunlight or radiant heat from appliances might affect control operation
• On an outside wall
• Adjacent to, or in line with, conditioned air discharge grilles, stairwells, or outside doors
• Where its operation may be affected by steam or water pipes or warm air stacks in an adjacent partition, or by any unheated or uncooled area behind the thermostat
• Where operation may be affected by lighting dimmers
• Where operation will be affected by the supply air of an adjacent unit
• Near electrical source interference such as arcing relay contacts

INSTALL STEPS

TIP: If you are replacing an existing sensor, take a picture of the wiring for reference.

1. Install the X7, XS, UP32, or US32 series thermostat according to the instruction manual supplied with it.
   Install cable (Red Arrow) from the thermostat to the remote sensor location. The maximum distance is 300ft. (90m).
   Use CATS 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.
   CAUTION: Disconnect power to the thermostat or remove the thermostat faceplate before connecting either end of the cable.
   IMPORTANT: Do not mount the sensor in direct sunlight, behind a door, or in a supply air path

2. Push the thumb latch on the right­ hand side of the circuit board and remove the circuit board from the plastic base.
   

3. Run the sensor cable from the thermostat to the sensor location.
   Keep the hole in the wall for the cable as small as possible.
   

4. Using the plastic base as a template, pull the sensor cable through the rectangular opening of the plastic base.
   Place the plastic base on the wall and mark the mounting hole positions on the wall using a pencil or small screwdriver tip.
   If mounting on sheetrock, use provided hollow wall mollies.
   When attaching the plastic base to the wall, make sure the arrows are facing up and the tab is on the right. This is required for proper airflow across the sensor.

5. After mounting the plastic base, make sure there is enough wire through the wall to finish the wire connections. Push any extra wire back into the wall cavity. Seal the hole in the wall and header plate around the cable to eliminate any draft that might affect the sensor.
   

6. Pull the sensor cable through the circuit board. Mount the circuit board into the plastic base by inserting the circuit board into the left-hand side. Snap the circuit board into the plastic base with the right-hand side thumb latch.
   

7. 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
   NOTE: the wire color goes to each terminal. The order of the wires on the thermostat is not the same as the sensor.

8. 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.
   

9. Set the DIP Switches on the bottom right of the sensor to the appropriate sensor type.
   SENSOR TYPE CONFIGURATION
   **| INDOOR
   Uses Internal temperature sensor or Indoor probes like the NT-FS or NT-FS-S| | AUX 1
   Uses internal temperature sensor or external probe.
   The external probe connects to 2-screwless terminals
   ---|---|---|---
   | OUTDOOR
   Uses outdoor probe.
   Has specific curve.
   The probe connects to 2-screwless terminals Ignore Temp/Hum Sensor| | AUX 2
   Uses internal temperature sensor or external probe.
   The external probe connects to 2-screwless terminals
   | INDOOR HUMIDITY ONLY
   Uses Internal Humidity sensor.| | AUX 3**
   Uses internal temperature sensor or external probe.
   The external probe connects to 2-screwless terminals

10. Set the jumper to match the total number of sensors directly connected to the thermostat; 1-2, 3-5, or 6+ sensors.
    WARNING: 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 configuration 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 configuration is the top jumper 1-2.
    Sensor Counting Example 3:
    You are connecting 3 INDOOR sensors (Averaged), OUTDOOR Sensor, AUX1, AUX2, AUX3, and an INDOOR HUMIDITY Sensor. The sensor count is 6 and the correct jumper configuration is the bottom jumper 6+.

11. 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 ensors.
    The names of the sensors will display in the dot matrix area of the display.
    For UP32 and US32 thermostats, press the two buttons on the right side of the thermostat to activate the secondary display for remote sensors. Press the Up or Down buttons to cycle through the sensor types. Rotate through indoor, outdoor, humidity, and AUX on the display. There will be a value next to the icon for the sensor type that has been selected.

12. If there are no additional sensors to be added to the sensor network, close the sensor case by hooking in the top, then snapping it on the bottom.
    

USING NT-URS AS HUMIDITY SENSOR

Install the NT-URS sensor using the single sensor instructions.
The NT- URS can be configured as a dedicated humidity-only sensor. Reference the switch position in the diagram to the right.
You can view the humidity value in the thermostat’s web server and on the thermostat faceplate, as described in
Step 11.

ADDING EXTERNAL SENSOR PROBES
Add the NT-RS-S or NT-FS to the NT-URS by connecting two wires from the probe to the terminals designated 1 and 2 on the NT-URS. (Connection to NT-RS-S shown below) The wires can be connected with either polarity. Use a 2conductor cable (22AWG minimum) with a maximum length of 300 feet (or 90m).
IMPORTANT: If the NT-URS is initially configured with an external probe and the probe fails or is disconnected, the NTURS will stop reporting and the Diagnostic LED will continually light until the problem is corrected.
NT-RS-S connected to NT-URS Sensor

(Optional NT-FS connection not shown)

Available Sensor Probes from Network Thermostat

NT-URS AS AUX1, AUX2, OR AUX3 SENSOR

The NT-URS can report as as AUX1, AUX 2 or AUX3 sensor. In this configuration, you can use either the internal temperature sensor or an external probe.
When the NT-URS is initially detected by the thermostat, it will check first from the external probe connections, if no probe is detected, the sensor will default to the internal temperature sensor.
IMPORTANT: If the NT-URS is initially configured with an external probe and the probe fails or is disconnected, the NTURS will stop reporting and the Diagnostic LED will continually light until the problem is corrected.

MULTIPLE INDOOR SENSOR CONFIGURATION

You can connect up to six (6) NT-URS sensors to provide INDOOR temperature averaging in a large area or several zones being controlled by the same system. The maximum distance for all sensors is 300 ft. (90m). Follow the instructions and diagrams to connect the additional INDOOR sensors.
NOTE:: Only ONE (1) NT-URS sensor configured as an INDOOR sensor can be added in this manner. Additional INDOOR sensors may be added by using the AVG terminals.

1. Wire the first sensor using the single sensor instructions.
   CAUTION: Make sure there is no power to the sensors by removing the thermostat from its backplate.
   

2. Connect wires to each additional sensor in the following manner.
   

3. Set #SENSORS jumper to 1-2 for ALL additional sensors used for averaging.

4. Reinstall the thermostat faceplate onto its backplate. Check proper operation by watching the LED blink pattern as outlined in the LED Status section. Repeat for each sensor.
   

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 five 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, fire, flood, lightning, or other conditions beyond the control of the manufacturer.
• The product is not installed according to the manufacturer’s instructions and specifications.

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 specific legal rights and you may have others that vary by state and/or province. For example, some states and/or provinces do not allow the exclusion r 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 specifications without notice.

SPECIFICATIONS

1° steps)
External Temp Sensor Range:| Outdoor: -54°F to +119°F (-48°C to +48°C);
Auxiliary Temp Sensor Range:| AUX1, AUX2, AUX3: -40°F to +200°F (-40°C to +93°C)
Internal Humidity Sensor Range:| 5% to 95% Relative Humidity, Non- condensing
Measurement Accuracy:
Temperature:| ± 1.0°F (±0.5°C);
Humidity:| 0-90%RH (±3%) ; 20-80% RH (±2%)
Terminations:| RS1 – Data, RS+V – Power, RS2 – Return, 1 & 2 – External Temp Sensor Leads, 1-2, 3-5, 6+ Sensors
Dimensions:| 2.1”H x 2.85”W x 1.0”D (53mm x 73mm x 25.4mm)
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
LED STATUS
The NT-URS includes a Diagnostic LED that can help you troubleshoot your installation and sensor operation.
LED Off:
LED OFF indicates no power to the NT-URS or thermostat.
Check the 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-URS successfully communicates with the thermostat. If the connection is successful, the LED will blink according to its configuration. If the remains on, there is a communication problem. Check to wire and fix as necessary.
LED On Solid After Power Up:
If the NT-URS loses connection with the thermostat for 60 seconds, the LED will turn on solid. Check the wiring and fix it as necessary. Cycle power and recheck the LED status.
LED Slow Blink (Onboard Sensor Operation):
If the NT-URS is configured to use its internal sensor (temperature or humidity) the LED will blink each time the thermostat requests data. This occurs approximately every 1620 seconds.
LED Double Blink (Onboard Sensor Averaging):
If the NT-URS is configured to INDOOR temperature and an additional sensor is connected to the AVG connection, the LED will blink twice each time the thermostat requests data. This occurs approximately every 16-20 seconds.
LED Triple Blink (External Probe Operation) If the NT-URS is configured to use an external probe connected to the 2-screwless terminals, the LED will blink three times the thermostat requests data. This occurs approximately every 16-20 seconds.
LED Fast Continuous Blink (Lost External Probe) If the NT-URS is configured to use an external probe and the NT-URS loses communication with the probe, the LED will continually blink fast. Check wiring and external probe and fix as necessary.
NOTE: In this condition, the NT-URS will stop reporting until the communication with the external probe is fixed.

WIRING DIAGRAM

NT-URS Wiring Instructions

• Only 1 Sensor for each type per thermostat except for INDOOR Sensor
• All nonindoor 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

COMPATIBILITY CHART

Multiple Configurations for Flexible Application Use

| X7| X5| UP32|

US32

---|---|---|---|---
INDOOR TEMPERATURE & HUMIDITY
Temp with internal sensor or external sensor (NT-FS, NT-RS-S)| | | |
INDOOR TEMP AVERAGE– up to 6 with automatic averaging
Temp with internal sensor or external sensor (NT-FS, NT-RS-S)| | | |
HUMIDITY ONLY – (Internal Sensor) 5 to 95% Non-Condensing| | | |
OUTDOOR – Temperature Only (NT-OUTDOOR sensor required)| | | |
AUX 1, AUX 2, AUX 3 – Temperature Only
(NT-PROBE-SS8 sensor. Inquire about other sensor types.)| | | |

DIP SWITCH SETTINGS

SENSOR TYPE CONFIGURATION

| INDOOR
Uses Internal temperature sensor or Indoor probes like the NT-FS or NT-FS-S| | AUX 1
Uses internal temperature sensor or external probe.
The external probe connects to 2-screwless terminals
---|---|---|---
| OUTDOOR
Uses outdoor probe.
Has specific curve. The probe connects to 2-screwless terminals Ignore Temp/Hum Sensor| | AUX 2
Uses internal temperature sensor or external probe.
The external probe connects to 2-screwless terminals
| INDOOR HUMIDITY ONLY
Uses Internal Humidity sensor.| | AUX 3
Uses internal temperature sensor or external probe.
The external probe connects to 2-screwless terminals

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