Install Instructions

Table Of Contents

ACC0402

MODEL

Wiring Requirements

CORRECT LOCATION When used as a supply or return duct sensor, this sensor must be mounted in the center of the

supply or return air stream. When used as a remote indoor room temperature sensor, this sensor should be mounted in a

location approximately five feet from the floor, close to or in a frequently used room, preferably on an inside partitioning

wall.

INCORRECT LOCATIONS The Duct Sensor should NOT be mounted close to a window, on an outside wall, or next to a

door leading to the outside. Do not mount the sensor in a location where it would be exposed to direct radiated heat which

may cause a false reading. Finally, do not mount the sensor in an area with poor air circulation.

Sensor Location

CAT 5 Cable

Thermostat Cable

The Duct Sensor should be connected to the thermostat using solid conductor CAT 5, CAT 5e, or CAT 6 type network

communication cable. This is an unshielded cable with four twisted pairs of 24 gauge solid wire; DO NOT use stranded

cable. The cable length should not exceed 250 feet. If less than 75 feet of cable is required to connect the thermostat to

the Duct Sensor, a two conductor thermostat cable (18-24 gauge) may be used; this cable is NOT suitable for any length

greater than 75 feet.

IMPORTANT: Do no use shielded wire. Do not run sensor wiring in the same conduit as the 24VAC thermostat wiring.

Electrical interference may cause the sensor to give incorrect temperature readings.

NOTE: All sensor wiring must be in compliance with all applicable local and national codes.

SAFETY CONSIDERATIONS

Read and follow the manufacturer instructions carefully. All wiring must conform to local and national

electrical codes. Improper wiring or installation may damage the sensor.

Recognize safety information. This is the safety alert symbol . When the safety alert symbol is present on

equipment or in the instruction manual, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety alert

symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death.

WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify

unsafe practices which may result in minor personal injury or property damage.

The Duct Sensor measures air temperature in the supply or return air duct with a range of -40 to 127 F. When

used as a supply duct temperature sensor, the sensor will read supply duct temperature and display this

information at the thermostat. When used as a return duct temperature sensor, this sensor may be used to

control heating or cooling based on return duct temperature information.

GENERAL

DIGITAL DUCT

TEMPERATURE SENSOR

IMPORTANT: READ ALL OF THESE INSTRUCTIONS BEFORE INSTALLING THE SENSOR.

P/N 88-949 Rev. 2

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DIGITAL DUCT TEMPERATURE SENSOR MODEL ACC0402 IMPORTANT: READ ALL OF THESE INSTRUCTIONS BEFORE INSTALLING THE SENSOR. SAFETY CONSIDERATIONS Read and follow the manufacturer instructions carefully. All wiring must conform to local and national electrical codes. Improper wiring or installation may damage the sensor. Recognize safety information. This is the safety alert symbol . When the safety alert symbol is present on equipment or in the instruction manual, be alert to the potential for personal injury.
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DIGITAL DUCT TEMPERATURE SENSOR MODEL ACC0402 Sensor Wiring WARNING Turn off power to the thermostat before wiring. Death or injury from electric shock could result. Digital Sensor High Temp. Heat Shrink Tubing Grommet Plenum Rated Cable The connection between the Duct Sensor and the thermostat must be wired per the connection diagram. Only two conductors are used, therefore the extra conductors should be cut from each end of the cable to prevent shorting. Follow the color coding as shown.