Johnson Controls NS-AHA700x-0, NS-ATA700x-0, NS-ATC700x-0 Installation Instructions Manual

Surface-Mounted NS Series Network Sensors with LCD

Installation Instructions

NS-AHA700x-0, NS-AHB700x-0, NS-AHR710x-0, NS-APA700x-0,
NS-APB700x-0, NS-APR710x-0, NS-ATA700x-0, NS-ATB700x-0,
NS-ATC700x-0, NS-ATD700x-0, NS-ATF700x-0, and NS-ATV700x-0

Refer to the QuickLIT website for the most up-to-date version of this document.

Part No. 24-10094-9, Rev. J

Issued August 8, 2013

Supersedes December 16, 2011

Applications

The surface-mounted NS Series Network Sensor with
Liquid Crystal Display (LCD) is an electronic zone
sensor designed to function directly with
Johnson Controls® BACnet®
Master-Slave/Token-Passing (MS/TP) digital
controllers in Heating, Ventilating, and Air Conditioning
(HVAC) systems. Models in this series monitor the
temperature setpoint, zone temperature, and humidity,
and transmit this data to a field controller on the Sensor
Actuator (SA) Bus.

All models feature a temperature setpoint dial and
LCD designed to make adjusting the temperature
setpoint and viewing the zone temperature easier.
A warmer/cooler dial is included on certain models for
minor temperature adjustments from the setpoint.

Some models allow occupants to view the
Relative Humidity (RH) of the zone; these models
include a push button to toggle between temperature
and RH on the display. These models also have the
capability to set the desired default display to either
temperature or RH.

A °F/°C push button is available on certain models
to provide temperature scale options for display.
A fan mode push button is also included on some
models to select the desired fan speed
(AUTO-OFF-low-medium-high). An occupancy
override function is featured on all models, which
allows the user to signal the controller that the sp ace is
occupied, to request an override of time-of-day
scheduling. Rotating the setpoint dial signals
occupancy. See Temperature Setpoint Adjustment/
Occupancy Override for more information.

Select models in this series also provide Variable Air
Volume (VAV ) balancing functionality. These models
look like and perform similarly to the other network
sensors but have the added capability of serving as a
tool to balance a VAV box.

Depending on the model chosen, the wires connecting
the network sensor to the controller can be ter m ina t ed
using either a modular jack or screw terminal block,
offering wiring flexibility.

Note: Models featuring a modular jack are not
intended for installations where daisy chaining to the
MS/TP Bus is required.

All models include an SA Bus access port for
connecting accessories to access the SA Bus. This
feature allows a technician to commission or service
the controller via the network sensor.

IMPORTANT: The surface-mounted NS Series
Network Sensor is intended to provide an input to
equipment under normal operating conditions.
Where failure or malfunction of the network sensor
could lead to personal injury or property damage to
the controlled equipment or other property,
additional precautions must be designed into the
control system. Incorporate and maintain other
devices, such as supervisory or alarm systems or
safety or limit controls, intended to warn of or protect
against failure or malfunction of the network sensor.

Surface-Mounted NS Series Network Sensors with LCD Installation Instructions 1

North American Emissions Compliance

!

United States

This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when this equipment is
operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference, in which case
the user will be required to correct the interference
at his/her own expense.

Canada

The following ambient operating conditions apply:

• Temperature: 32 to 104°F (0 to 40°C)

• Humidity: 10 to 90% Relative Humidity (RH),
noncondensing; 85°F (29°C) maximum dew point

To mount the network sensor to the wall:

1. Use a 1/16 in. (1.5 mm) Allen wrench or
Johnson Controls T-4000-119 Allen-Head
Adjustment Tool to loosen the security screw on
the top of the unit.

2. Insert a coin into the slot next to the security screw
location, then carefully pry the top edge of the
sensor assembly away from its mounting base and
remove.

IMPORTANT: Do not remove the Printed Circuit
Board (PCB). Removing the PCB voids the product
warranty.

This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.

Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.

Installation

Special Tools Needed

A 1/16 in. (1.5 mm) Allen wrench or a Johnson Controls
T-4000-119 Allen-Head Adjustment Tool is required
during installation.

Mounting

Location Considerations

Locate the network sensor:

• on a partitioning wall, approximately 5 ft (1.5 m)
above the floor in a location of average
temperature

• away from direct sunlight, radiant heat, outside
walls, outside doors, air discharge grills, or
stairwells; and from behind doors

• away from steam or water pipes, warm air stacks,
unconditioned areas (not heated or cooled), or
sources of electrical interference

Note: The network sensor is shock and vibration
resistant; however, be careful not to drop the unit or
mount it where it could be exposed to excessive
vibration.

3. Pull out approximately 6 in. (152 mm) of cable from
the wall, and insert the cable through the hole in
the mounting base.

4. Align the mounting base on the wall, and use the
base as a template to mark the location of the two
mounting holes on the surface.

Note: Confirm that the mounting base is positioned
with the proper edge up. The mounting base is
positioned properly when the security screw is located
on the top edge of the base.

5. Secure the mounting base to the wall using the
appropriate mounting hardware (field furnished).

6. Wire the network sensor. For more details on
wiring the MS/TP Communications Bus, refer to
the MS/TP Communications Bus Technical Bulletin

(LIT-12011034) or the FX-PC Series Controllers
MS/TP Communications Bus Technical Bulletin
(LIT-12011670).

For models featuring a modular jack, simply snap
the wiring plug into the jack. See Figure 1 for
modular jack pin number assignments. Modular
jack models require a straight-through, one-to-one
connection (not a crossover). For models featuring
a screw terminal block, wire the unit as illustrated
in Figure 2.

CAUTION: Risk of Electric Shock.

Disconnect the power supply before
making electrical connections to avoid
electric shock.

Surface-Mounted NS Series Network Sensors with LCD Installation Instructions2