Network Thermostat NT-ROOM-S User manual

NT-ROOM-S Sensor Installation
1. Install the X7, X5, 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. 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.
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 plastic base to the wall, make sure the
arrows are facing up and the tab is on the right. This is
required for proper airow across the sensor.
5. After mounting the plastic
base, make sure there is
enough wire through the wall
to nish 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 aect 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.
pg 1 240248-04
NT-ROOM-S
Introduction
The Network Thermostat NT-ROOM-S remote sensor is designed to sense air temperature and/or
humidity at locations remote to the X7, X5, 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, X5, 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 duct sensor, ush mount, and
outdoor probes are available.easy-to-install surface mount enclosure. Optional duct sensor, ush
mount, and outdoor probes are available.
CAUTION: Disconnect power to the
thermostat or remove thermostat
faceplate before connecting either
end of the cable.
IMPORTANT: Do not mount sensor
in direct sunlight, behind a door, or in
a supply air path.
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP

pg 2 240248-04
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 going to each terminal. The order of the wires
on the thermostat are 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.
10. Set the jumper to match the total number of
sensors directly connected to the thermostat; 1-2,
3-5, or 6+ sensors.
DO NOT COUNT SENSORS USED FOR
INDOOR AVERAGING.
11. Adding a NT-RS-S to the NT-ROOM-S (Optional)
Connect the two wires from the NT-RS-S to
terminals designated 1 and 2 on the NT-ROOM-S.
The wires can be connected with either polarity.
Use 2-conductor cable (22AWG minimum) with a
maximum length of 300 feet (or 90m).
12. 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 dierent
connected sensors. 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
AUX1 on the display. There will be a
value next to the icon for the sensor
type that has been selected.
13. 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.
NT-ROOM-S
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP 1-2
3-5
6+
NUMBER OF SENSOR CONFIGURATION
SENSOR TYPE CONFIGURATION

pg 3 240248-04
X-Series
NT-ROOM-S
After installing the rst sensor as described above, additional sensors may be added to the sensor network. One sensor of
each type may be added to the sensor bus by using the same cable type from sensor to sensor.
NOTE: Only ONE (1) NT-ROOM-S sensor congured as an INDOOR sensor can be added in this manner. Additional INDOOR
sensors may be added by using the AVG terminal.
Using Multiple INDOOR Sensors for Temperature Averaging
You can connect up to six NT-ROOM-S sensors to provide INDOOR temperature averaging in a large area or several zones
being controlled by the same system. Maximum distance for all sensors is 300 ft. (90m). Follow the instructions below and the
diagram on page 2 to connect the additional INDOOR sensors.
1. Wire the rst 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 additional sensors
used for averaging.
4. Reinstall the thermostat faceplate on to its backplate.
Check for proper operation of each sensor by
temporarily blowing warm breath on the sensor. The
displayed temperature will go up several degrees if
the sensor is properly installed. Repeat for each
sensor. Each additional sensor will increase the value
less since the sensor are averaging.
Using the NT-ROOM-S as a Humidity Sensor
Install the NT-ROOM-S sensor using the single sensor instructions.
The NT- ROOM-S can be congured 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 12 on page 2.
NOTE: US32 Series Thermostats do not support humidity
sensors.
# Sensors
1-2
3-5
6+
UP UP
NT-ROOM-S
Set as Humidity Only Sensor
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
NT-ROOM-S
Set as Indoor Sensor for
Temperature Averaging
Next Sensor
See Page 2 Step 8
for proper settings
NT-ROOM-S
Set as Indoor Sensor
X-Series

pg 4 240248-04
Troubleshooting
Wiring Diagram
Symptom Solution
Thermostat has no display Check wiring between thermostat and sensor. Incorrect
wiring can damage the thermostat, transformer or blow a
fuse. Check the 24VAC supply.
Thermostat reads ‘AC’ 24VAC power is disconnected or wired improperly.
Not sure if display is showing local or remote temperature Breathe on the wall near the bottom left corner of the
thermostat. The temperature will go up for a few seconds if
sensing locally.
Thermostat displays very high temperature Wires on the thermostat’s sensor element are shorted
together. Separate them.
Thermostat displays very low temperature Check wiring of the INDOOR sensor probes, if used. The
sensor probe is not connected to board or is broken.
NT-ROOM-S
NT-ROOM-S
Set as Outdoor
Sensor
NT-ROOM-S
Set as Humidity
Only
NT-ROOM-S
Set as AUX1
NT-ROOM-S
Set as Indoor
Sensor
To Thermostat
NT-ROOM-S 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
NT-DRS
Set as AUX2
NT-DRS
Set as AUX3
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
# Sensors
1-2
3-5
6+
UP UP
RS2 RS+V RS1
INDOOR
NT-ROOM-S
#1
OTHER
SENSORS
INDOOR
NT-ROOM-S
#2
INDOOR
NT-ROOM-S
#3
INDOOR
NT-ROOM-S
#4
INDOOR
NT-ROOM-S
#5
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
RS+V
RS2
RS1
AVG
1-2
3-5
6+
NUMBER OF SENSOR CONFIGURATION
SENSOR TYPE CONFIGURATION
NOTE: Set jumpers for
total number of sensors
WITHOUT counting Indoor
Averaging Sensors
NOTE: Jumpers shown for 6+ Sensors. See Page 2
Step 8 for proper setting instructions.