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model:

 ACC-TSENWIFI

Temperature Sensor with Wi-Fi 

Installation Instructions

Before you begin the installation:

The 

Venstar Configurator App

 is needed to configure this sensor.   

This App may be downloaded from your mobile device store.
Select a suitable location for the ACC-TSENWIFI sensor.  Please note 
that the sensor must have good Wi-Fi reception from the access point 

it is intended to join.  Do not mount in direct sun or direct rain.
Please have handy the Owner’s Manual for the thermostat that will 

be paired with the sensor.  Venstar thermostats have unique pairing 

procedures.  

OVERVIEW

This wireless temperature sensor may be used as a room remote temperature sensor, an outdoor temperature sensor, a return air 

temperature sensor or a supply air temperature sensor.

The ACC-TSENWIFI is equipped with an onboard temperature sensor.  An external sensor, such as the duct sensor included in the  

ACC-TSENWIFI box, may be connected to the rear terminals of the ACC-TSENWIFI as an option.  For accurate temperature sensing  

the 10k thermistor must adhere to the table on page 3.

Venstar thermostats vary by model in the way they can use remote sensors.  This includes averaging, control to, or monitoring features.  

Please consult the Owner’s Manual of the thermostat that you are going to pair this sensor with to understand its capabilities and  

pairing procedure.

This sensor is compatible with all Venstar Wi-Fi thermostats that contain the latest firmware.  Please consult Venstar.com for a complete 

listing of compatible thermostats.

Note: This sensor must be connected to the same local network as the thermostat(s) that will use the sensor data. 

Configurator 

app icon

fig. 1

AC POWER IN

24V
AC

REMOTE

SENSOR

Link 

button

Unit ID

Sensor

type

Temperature

Sensor

fig. 2

To Connect the Sensor to an Access Point:

1.   Remove sensor cover.
2.   Configure the Sensor. (use fig. 2 as a guide)
 

A

   Set the Type:

 

 

1. 

Outdoor temperature is sampled and transmitted once every 5 minutes.

 

 

2. 

Return temperature is sampled and transmitted once every 20 seconds.

 

 

   

a.   Must be connected to 24Vac for 20 second sample rate. 

 

   

     If battery powered; 1 minute sample rate.

 

 

3. 

Remote temperature is sampled and transmitted once every minute.

 

 

4. 

Supply temperature is sampled and transmitted once every 20 seconds.

 

 

   

a.   Must be connected to 24Vac for the 20 second sample rate.   

 

   

     If battery powered; 1 minute sample rate.

 

B

    Set the Unit ID:

 

 

  If more than one ACC-TSENWIFI is joined to an access point each sensor must  

 

  have a unique UNIT ID# to operate properly.

 

 

  Up to 20 ACC-TSENWIFI sensors may be joined to 1 access point.

 

C

  Select the Temperature Sensor:

 

 

i.  

Onboard

 will use the temperature sensor mounted on the circuit board  

 

   

of the ACC-TSENWIFI.

 

 

ii. 

Remote

 will use the sensor connected to the remote sensor terminals on  

 

   

the back of the ACC-TSENWIFI.

A

B

C

Summary of Contents for ACC-TSENWIFI

Page 1: ...nsor with to understand its capabilities and pairing procedure This sensor is compatible with allVenstarWi Fi thermostats that contain the latest firmware Please consultVenstar com for a complete listing of compatible thermostats Note This sensor must be connected to the same local network as the thermostat s that will use the sensor data Configurator app icon fig 1 AC POWER IN 24VAC REMOTE SENSOR...

Page 2: ... Select Wireless Sensors 7 Select Add New Sensor 3 Install 4 AA batteries with the polarity as indicated on the ACC TSENWIFI housing see fig 3 Disregard the battery installation when 24Vac is connected to the sensor a Alkaline batteries are acceptable for operation in the temperature range of 0 F to 120 F b When operating between 20 F to 130 F it is recommended to use good quality Lithium AA batte...

Page 3: ...aline batteries 0 F 120 F with lithium batteries 20 F 130 F Expected Battery Life Sample rate of 1 per minute 1 year Sensor Type 10K Ohm thermistor 2 wire pigtail 24Vac Included 10K Ohm Sensor HVAC Duct sensor gasket wall fig 4 fig 5 Figure 4 illustrates the optional use of an external sensor along with external power fig 5 When mounting outdoors Install gasket as shown between wall and sensor Kee...

Page 4: ...nce isotrope rayonnée équivalente PIRE ne est pas plus de ce qui est nécessaire pour une communication réussie We Venstar declare under our sole responsibility that the device to which this declaration relates Complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference re...

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