aci ROOM Series Installation instructions

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 1
Version: 4.0
I0000112
2.75"
(69.85 mm)
2.75"
(69.85 mm)
1.12"
(28.55 mm)
1.12"
(28.55 mm)
4.50"
(114.30 mm)
ROOM, VERSION 1
[R]
ROOM, VERSION 2
[R2]
FRONT
BOTTOM
RIGHT
FRONT
BOTTOM
RIGHT
4.50"
(114.30 mm)
FIGURE 1: ROOM DIMENSIONS
ROOM SERIES
Installation & Operation Instructions
PCB: HO
Phone: [phone]
Website: workaci.com
PRECAUTIONS
• DO NOT RUN THE WIRING IN ANY CONDUIT
WITH LINE VOLTAGE (24/120/230 VAC).
GENERAL INFORMATION
The HO/20K-RSO series is a system specic sensor
that is polarity sensitive but not position sensitive.
This unit is available in many dierent
congurations including Room w/ Override, and
Room w/ Setpoint, and Room w/ Override, and
Setpoint. RS232 Communication jack options are
available upon request.
MOUNTING INSTRUCTIONS
Take care when mounting. Check local code for
mounting height requirements. Typical mounting
heights are 48-60” (1.2-1.5 m) o the ground and at
least 1.5’ (0.5 m) from the adjacent wall. The sensor
should be mounted in an area where air circulation is
well mixed and not blocked by obstructions.
Separate the cover from the base. Attach the base
directly to the wall or to a standard 2”x 4”junction
box using the (2) #6-32 x 1”screws provided.
*Reference FIGURE 2 (next page)
For optimal temperature measurement, follow
these tips:
•Do not install on external walls.
•Avoid air registers, diusers, vents, and windows.
•Avoid conned areas such as shelves, closed
cabinets, closets, and behind curtains.
•Eliminate and seal all wall and conduit penetrations.
Air migration from wall cavities may alter
temperature readings.
•A thermally-insulated backing should be used when
tting to solid walls (concrete, steel, etc.). ACI part:
A/ROOM-FOAM-PAD
•Do not install near heat sources, eg: lamps,
radiators, direct sunlight, copiers, chimney
walls, walls concealing hot-water pipes.
Refer to the Wiring Instructions (p. 2-3) to make
necessary connections. Tighten the cover down,
using the (2) 1/16” Allen screws located in the
bottom of the housing. A 1/16” Hex driver is
needed to secure the cover to the base.

48"-60"
(1.2-1.5 m)
OPTIONAL INSULATING GASKET
BACKPLATE
MOUNTING SCREWS
(#6-32 x 1”)
CIRCUIT BOARD
COVER
FIGURE 2: MOUNTING
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 2
Version: 4.0
I0000112
WIRING INSTRUCTIONS
ACI recommends 16 to 26 AWG twisted pair wires or
shielded cable for all sensors. Signal wiring must be
run separate from low and high voltage wires
(24/120/230 VAC). All ACI thermistors are both
non-polarity and non-position sensitive. The
number of wires needed depends on the
application. All wiring must comply with all local
and National Electric Codes. After wiring, attach the
cover to the base by snapping the top of the cover
on rst and then the bottom.
Note: The Isolated position is for isolating the
commons for each of the inputs to the control
system. The Common position is for connecting all
of the commons together for each of the inputs to
the control system at the GND/COM terminal.
*See TABLE 2 For Selections (Page 3)
FIGURE 3: LAYOUT
TERMINAL
BLOCKSTO
CONTROLLER
“AFTER HOURS”
NORMALLY OPEN
OVERRIDE SWITCH
LED
LED-
LED+
SW RET
SWITCH
SENSOR
GND/COM
SETPNT
SETPNT RET
E-BUS M
E-BUS R
E-BUS T
ISOLATED
WIRE ACCESS HOLE
3.5mm COMMUNICATION JACK
THERMISTOR
SETPOINT AJUSTMENT
POTENTIOMETER
SHUNT SELECTION
SWITCHES
TERMINAL
BLOCKS
COMMUNICATION
TERMINAL
BLOCKS
TABLE 1: PCB CONNECTIONS
CONNECTIONS
Thermistor Output to Controller
Analog Input
Common/Gnd for Sensor,
Setpoint, Override, and LED
Setpoint Output to Controller
Analog Input
Setpoint Output Common to
Controller Analog Input
(Separate Input Only)
RS232 Communication (Middle
of Male Plug)
RS232 Communication (Back of
Male Plug)
RS232 Communication (Tip of
Male Plug)
Override Output to Controller
Analog Input
Override Output Common to
Controller Analog Input
(Seperate Input Only)
LED Supply Voltage
LED Common/Gnd Seperate
Input only
TERMINAL BLOCKS
SENSOR
GND/COM
SETPNT
SETPNT RET
E-BUS (Mid)
E-BUS (Ring)
E-BUS (Tip)
SWITCH
SW RET
LED+
LED-
(SEE NEXT PAGE FOR SHUNT SELECTION SWITCHES)

TROUBLESHOOTING
PROBLEM
Sensor reading is incorrect
Sensor reads infinity/very high resistance
Sensor reads low resistance
Erratic readings
SOLUTION(S)
•Verify sensor wiring to controller is not damaged and has continuity.
•Verify sensor or wires are not shorted together.
•Verify controller is setup for correct sensor curve.
•Disconnect wires from sensor terminal block, tighten terminal block
screws down, and take a resistance (ohm) reading with a multimeter.
•Compare the resistance reading to the Temperature Vs Resistance
Curves online: http://www.workaci.com/content/thermistor-curves-0
•Verify proper mounting location to conrm no external factors are
aecting reading.
•Sensor or wires are open.
•Sensor or wires are shorted together.
•Condensation on PCB board
•Bad wire connections.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 3
Version: 4.0
I0000112
WIRING INSTRUCTIONS (Continued)
Note: When using a shielded cable, be sure to connect
only (1) end of the shield to ground at the controller.
Connecting both ends of the shield to ground may
cause a ground loop. When removing the shield from
the sensor end, make sure to properly trim the shield to
prevent any chance of shorting.
Note: ACI’s stats are not two-way communicating.
Communication jacks allow the user to query and
modify operating parameters of the local room terminal
unit from the portable operator’s terminal (laptop). This
feature allows a technician to commission or service the
controller via the sensor.
SETPOINT CONTROL
Adjust slider at bottom of housing for set point control. Slide to right to increase set point temperature. Slide to
left to decrease temperature control. Units are setup from factory for Reverse Acting (resistance decreases
when adjusted to right).
OVERRRIDE OPTIONS
Override will be set to Separate Input (Dry Contact Closure).
TABLE 2: SHUNT SELECTION SWITCHES - Reference Figure 3
TERMINAL BLOCKS
POSITION #3
POSITION #4
POSITION #5
CONNECTIONS
Connects SETPNT RET terminal to GND/COM terminal in Common position
Connects LED (-) terminal to GND/COM terminal in Common position
Connects SW RET terminal to GND/COM terminal in Common position
ISOLATED
ISOLATED
C-BUS DEVICES
E-BUS DEVICES

WARRANTY
The ACI Room Series temperature sensors are covered by ACI’s Five (5)Year Limited Warranty, which is located in
the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com.
W.E.E.E. DIRECTIVE
At the end of their useful life the packaging and product should be disposed of via a suitable recycling
centre. Do not dispose of with household waste. Do not burn.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 4
Version: 4.0
I0000112
PRODUCT SPECIFICATIONS
One
1/16”Allen screws (2 qty) / 1/16”Hex Driver
“Dry Contact”Closure (Separate Input)
1.5 to 50 °C (35 to 122 °F) | -40 to 65 °C (-40 to 149 °F)
10 to 95% RH, non-condensing
Screw Terminal Blocks (Non-Polarity Sensitive)
16 (1.31 mm²) to 26 AWG (0.129 mm²)
0.5 Nm (Minimum); 0.6 Nm (Maximum)
“-R2” Enclosure: ABS Plastic | White, UL94-HB
“R” Enclosure: ABS Plastic | Beige UL94-HB
SENSOR NON-SPECIFIC INFORMATION
Number Temperature Sensing Points:
Housing Screw Size / Drive Size:
Override Option:
Operating | Storage Temperature Range:
Operating Humidity Range:
Connections / Wire Size:
Terminal Block Torque Rating:
Enclosure Material | Color:
THERMISTOR
Sensor Output @ 25 °C (77 °F):
Accuracy @ 0-70 °C (32 - 158 °F):
A/20K: 20 KΩ nominal
+/- 0.2 °C (+/- 0.36 °F)