Aci LM34 RSO Installation instructions

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: 1-888-967-5224 | Website: workaci.com

Page 1

Version: 4.0

I0000118

2.75"

(69.85 mm) 1.12"

(28.55 mm)

4.50"

(114.30 mm)

ROOM, VERSION 1

[R]

FRONT

BOTTOM

RIGHT

FIGURE 1: ROOM DIMENSIONS

ROOM SERIES

Installation & Operation Instructions

PCB: LM34/LM334 RSO

Phone: 1-888-967-5224

Website: workaci.com

PRECAUTIONS

• DO NOT RUN THE WIRING IN ANY CONDUIT

WITH LINE VOLTAGE (24/120/230 VAC).

GENERAL INSTRUCTIONS

The Room sensor is a single point temperature

sensor that is designed for use with electronic

controllers in commercial heating and cooling

building management systems. These units will be

oered in Room, Room with Setpoint, Room with

Override, and Room with Setpoint and Override.

MOUNTING INSTRUCTIONS

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.

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.

*Reference FIGURE 2 (next page)

2.75"

(69.85 mm)

1.12"

(28.55 mm)

ROOM, VERSION 2

[R2]

4.50"

(114.30 mm)

BOTTOM

FIGURE 2: MOUNTING

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: 1-888-967-5224 | Website: workaci.com

Page 2

Version: 4.0

I0000118

FIGURE 3: PRINTED CIRCUIT BOARDS

MOUNTING INSTRUCTIONS

(Continued)

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.

Refer to Wiring Instructions (p. 2) 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.

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). 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: 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.

COVER

#6-32 x 1”

MOUNTING SCREWS

BACKPLATE

OPTIONAL INSULATING

GASKET

CIRCUIT BOARD

LM34-RSOLM334-RSO

TEMPERATURE

SENSOR

“AFTER HOURS ”

NORMALLY OPEN

OVERRIDE SWITCH

O/RSET O/R

LM34

SET

SETPOINT ADJUSTMENT

POTENTIOMETER

TERMINAL BLOCKS

TEMPERATURE

SENSOR

“AFTER HOURS ”

NORMALLY OPEN

OVERRIDE SWITCH

SETPOINT ADJUSTMENT

POTENTIOMETER

TERMINAL BLOCKS

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: 1-888-967-5224 | Website: workaci.com

Page 3

Version: 4.0

I0000118

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.

TABLE 1: TERMINAL BLOCK CONNECTIONS

TERMINAL BLOCKS

LM34 (+)

LM34 (S)

LM34 (-)

SET

O/R

LM334 (+)

LM334 (-)

CONNECTIONS

+5 to 30 VDC supply voltage

Sensor output to controller (mV)

Common / ground of controller or power supply

Setpoint output to controller

Tenant override or dry contact output to controller

+5 to 30 VDC supply voltage

Signal output to controller (uA)

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 can be setup from factory for Direct Acting (resistance increases

when adjusted to right), or Reverse Acting (resistance decreases when adjusted to right).

OVERRRIDE OPTIONS

Override will be set to Override Separate Input (Dry Contact Closure)

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.

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: 1-888-967-5224 | Website: workaci.com

Page 4

Version: 4.0

I0000118

PRODUCT SPECIFICATIONS

One

1/16”Allen screws (2 qty) / 1/16”Hex Driver

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:

Operating | Storage Temperature Range:

Operating Humidity Range:

Connections / Wire Size:

Terminal Block Torque Rating:

Enclosure Material | Color:

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