ACI-Automation Components A/XX-FRZ2” Instruction Sheet

Installation and Operation Instructions

A/XX-FRZ2”

RED

RED

WHITE

THERMISTOR/
RTD

SENSOR INPUT #1
OF DDC SYSTEM

DDC CONTROL

A/XX-SUBM-2"

PIPE

STRAPS

INSULATION

THERMAL GREASE (OPTIONAL)

Please Read Instruction Carefully Before Installation!

 Applications

A few of the most common applications are listed below:

 Monitoring Freezers or Glycol Temperatures
 Monitoring Cooling Towers and Tank Temperatures
 For Direct Fluid Insertion

 Installation

The A/XX-FRZ2” probe temperature sensors are single point temperature sensors with Stainless Steel (304 or 316 Series)

probes. Use care when installing the 2” probes. Pay attention not to kink the cable. The red/red/white wires should be

securely connected to the controller. When using the A/XX-FRZ2” in a strap-on application, make sure to securely fasten

the probe to the outside surface of the pipe. A loose attachment could affect the accuracy. To ensure good contact, thermal
grease is recommended. Insulating the sensor will help to eliminate the effects that the air temperature has on the sensor

readings. When installing the A/XX-FRZ2” sensor, it may be necessary to wire tie the cable, depending upon the

application.

Glycol Bottle Application

 Tank Application Strap-on Application

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Installation Instructions
I0000320 Rev 3 Page 1 of 2

 Troubleshooting

WHITE

THERMISTOR/
RTD

RED

RED

A/XX-SUBM-2"

OHMMETER

Sensor reads 0 ohms or very low Sensor or wires are shorted together
Verify that all three of the leads are not shorted to the probe.

Sensor reads infinity or very high Sensor or wires are cut or open
Erratic readings Bad wire connections - Condensation or Moisture problem

Inaccurate Sensor If you suspect that the sensor is not reading within the specified

tolerance, disconnect the sensor wires from the Building Management
System (DDC Controller) and attach a NIST traceable ohmmeter
across the three wires. Download the resistance chart for the given
sensor type from the ACI website.

 WEEE Directive

At the end of their useful life the packaging and product should be disposed of via a suitable recycle centre. Do not dispose
of with household waste. Do not burn.

Installation Instructions
I0000320 Rev 3 Page 2 of 2