Venstar Remote Duct Digital Temperature Sensor Wire (ACC0435)Manual

Venstar Remote Duct Digital Temperature Sensor Wire (ACC0435)Manual
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.
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.
GENERAL
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.
Sensor Location
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.
Wiring Requirements
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.
CAT 5 Cable
Thermostat Cable
NOTE: All sensor wiring must be in compliance with all applicable local and national codes.
©Venstar Inc. 04/13
P/N 88-949
Rev. 2
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.
Compatible
Thermostat
(Please consult www.venstar.com for a
complete list of compatible thermostats)
White
Black
RS1
RS-GND
Sensor Installation
INDOOR INSTALLATION
Perform the following procedures to install the
sensor:
1. Select a location in the supply or return air ductwork for the sensor.
Mark this location in the center of the duct.
2. Drill a 1/4-in. mounting hole in the ductwork at the marked
location.
3. Push the rubber grommet into the hole in the ductwork until
the grommet snaps into place.
4. Push the Duct Sensor through the grommet into the supply or return
air duct.
Grommet (1/4-in. hole)
Duct Sensor
Supply or Return Air Duct
©Venstar Inc. 04/13
P/N 88-949
Rev. 2
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